FREE
CONSULTATION
If you are designing a new
course or are updating an old one - call us.
We can enable you to offer a
comprehensive lab course at much less of a cost than you can imagine.
Phone: 312-243-2016; FAX: 312-243-2041
e-mail:iibbt@iibbt.com
9.
ANTIBIOTIC
DISKS FOR SENSITIVITY TESTING
The
purpose of this test, in an educational setting, is to demonstrate to
the student why this test is necessary and how the test is performed. In order to impart this knowledge, a set of 4-5 different
antibiotic disks is sufficient. Students
can place these disks on plates, swabbed with the test organisms, with
flame sterilized forceps. While
multidisk dispensers are helpful, they are not essential for teaching
the concept. However, if
funds allow it, it is advisable to procure a dispenser so that
students can see how this important test is performed routinely in
hospitals.
The
recommended manual method for antibiotic sensitivity testing is the
Kirby-Bauer method. Laboratory
handouts describing this procedure including a laboratory exercise,
are available from this Institute.
For ordering information, see below.
While the choice of antibiotic discs can vary, Gram positive
organisms are generally tested using the following antibacterial
agents:
A-01
Clindamycin 2-mcg
A-02
Lincomycin 2 mcg
A-03
Erythromycin 15 mcg
A-04
Penicillin G 10 units
A-05
Oxacillin 1-mcg or
A-06
Methicillin 5 mcg
A-07
Cephalothin 30 mcg
A-08
Tetracycline 30 mcg
A-09
Gentamicin 10 mcg
Likewise,
Gram negative organisms are generally tested using the following
antibacterial agents:
A-10
Ampicillin 10 mcg
A-07
Cephalothin 30 mcg
A-08
Tetracycline 30 mcg
A-09
Gentamicin 10 mcg
A-11
Carbenicillin 100 mcg
A-12
Kanamycin 30 mcg
A-13
Tobramycin 10 mcg
A-14
Amikacin 30 mcg
A-15
Nitrofurantoin 300 mcg
A-16
Trimethoprim 5 mcg or
A-17
Sulfamethoxazole 0.25 mg
Price and Ordering
Information
A-18 Laboratory handout.
A basic guide to the selection and use of antibiotics. Includes a laboratory exercise on sensitivity testing by the
Kirby Bauer method. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . $3.50
Individual vials
separately containing the antibacterial
agents listed above.
Price per vial . . . . . . . . . . . . . . . . ..
$7.50
COST CUTTING TIP:
Outdated antibiotic disks are still usable for teaching
purposes; don't throw them away.
10.
IMMUNOLOGICAL
AND SEROLOGICAL REAGENTS
Major
breakthroughs in microbiology and for that matter in biology since
1960 have been in the field of immunology and serology.
Concepts and skills, especially methodology, of these important
areas are, therefore, essential to providing a complete and up-to-date
picture of microbiology and biology. Many of these techniques also
form the basis of biotechnology and genetic engineering making their
learning even more important.
Unfortunately,
reagents used in these areas are produced for use by clinical
laboratories and, therefore, are not only expensive, but are often
hard to find. An answer
to this dilemma is classroom quality immunological reagents, which are
relatively inexpensive. This
catalogue lists such reagents and thus opens ways for instructors to
teach a variety of antigen-antibody reactions, such as the precipitin
reaction, the agglutination reaction, the complement fixation
reaction, the neutralization reaction, the hem agglutination reaction,
the passive hem agglutination reaction, immunodouble diffusion or the
Ouchterlony reaction and immunoelectrophoresis. Simultaneously, an instructor can also show how these tests
are used in the design of serological tests for the diagnosis of
disease, for testing the purity of proteins and other antigens and in
medico legal areas such as forensics.
In
addition to providing serological reagents suitable for teaching, the
Institute is also available to assist you in the design and
implementation of immunological and serological experiments for your
classes. So, feel free to
call the Institute with your questions and comments.
DETAILED
LABORATORY HANDOUTS explaining the principles and procedures of
immunological and serological reactions are also available from the
Institute. For price
information, please refer to the end of this section.
REAGENTS
FOR AGGLUTINATION REACTION - with directions
Catalogue
#
Description
Qty
Price
IM-01
Killed, standardized suspension of Salmonella typhosa
5.0 ml $5.00
IM-02
Killed, standardized suspension of Salmonella Montevideo
5.0 ml
$5.00
IM-03
Suspension of Salmonella typhosa marked as unknown #1
5.0 ml $5.00
IM-04
Suspension of Salmonella montevideo
marked as unknown #2 5.0 ml
$5.00
IM-05
Suspension of Salmonella cholerae-suis marked as unknown #3 5.0 ml
$5.00
(Use
of these suspensions as unknowns enables students to understand the
usefulness of agglutination reactions and, also, to test their ability
to read and differentiate between a positive and a negative
agglutination reaction.)
IM-06
Anti Salmonella typhosa
5.0 ml
$12.50
IM-07
Anti Salmonella Montevideo
5.0 ml
$12.50
IM-08
Anti Salmonella cholerae-suis
5.0 ml
$12.50
REAGENTS FOR PRECIPION REACTION ALSO FOR
IMMUNODOUBLE DIFFUSION, ELECTROPHORESIS
AND IMMUNOELECTROPHORESIS - with directions
Catalogue #
Description Qty.
Price
IM-09
Human serum
5.0 ml
$12.50
IM-10
Goat serum
5.0 ml
$7.50
IM-11
Horse serum
5.0 ml
$7.50
Catalogue #
Description
Qty.
Price
IM-12
Human gamma globulin
5.0 ml $20.00
IM-13
Human albumin
5.0 ml
$10.00
IM-14
Anti human serum
5.0 ml
$20.00
IM-15
Anti goat serum
5.0 ml
$15.00
IM-16
Anti horse serum
5.0 ml
$15.00
NOTE: For supplies for Ouchterloney double diffusion,
electrophoresis and immuno-electrophoresis, refer to the Section on
Special supplies and reagents for Immunological reactions.
REAGENTS FOR NEUTRALIZATION REACTION
a)
Bacteriophage
and antibacteriophage system
- with directions
Catalogue
#
Description
Qty.
Price
VL-01
Suspension of E. coli T4 bacteriophage
2.0
ml $10.00
IM-11
Anti E. coli T4 bacteriophage
5.0 ml $10.00
LB-33
E. coli strain B
$5.00
Toxin and antitoxin system - with directions
Catalogue
#
Description
Qty.
Price
IM-18
Bacterial filtrate containing hemolytic factors
3.0 ml
$15.00
IM-19
Antihemolytic factors
3.0
ml
$20.00
Blood
plate for hemolytic reaction
$1.00
REAGENTS FOR PASSIVE HEMAGGLUTINATION
REACTION - with directions
Catalogue
#
Description
Qty.
Price
IM-20
Soluble antigen coupled to red blood cells
5.0 ml
$25.00
IM-21
Red blood cells without soluble antigen
5.0 ml
$10.00
IM-22
Anti soluble antigen
5.0 ml $15.00
IM-23
Soluble antigen solution
5.0 ml $20.00
REAGENTS FOR COMPLEMENT FIXATION
REACTION - sufficient for 30 students - with directions
Catalogue
#
Description
Qty.
Price
IM-24
Antigen suspension
3.0 ml
$5.00
IM-25
Positive control serum for complement fixation
5.0 ml $15.00
IM-26
Negative control serum for complement fixation
5.0 ml $10.00
IM-27
Unknown serum - for complement fixation
5.0 ml $15.00
IM-28
Complement - for complement fixation
5.0 ml $25.00
IM-29
Sheep blood for complement fixation
10.0 ml $15.00
IM-30
Anti-sheep red blood cells for complement fixation
3.0 ml $15.00
IM-31
Veronal Buffer for complement fixation
250 ml $10.00
11.
REAGENTS
FOR BLOOD TYPING
IM-32
Anti-A serum
5.0 ml $7.50
IM-33
Anti-B serum
5.0 ml
$7.50
IM-34
Anti-Rh serum
5.0 ml
$20.00
NOTE:
We do not recommend students using their own blood for blood
typing. The following
blood cells and unknown blood cell suspensions are, therefore,
provided. Quantities are
sufficient for a class of up to 30 students:
Catalogue
#
Description
Qty.
Price
IM-35
Human red blood cells from type A blood
5.0 ml
$7.50
IM-36
Human red blood cells from type B blood
5.0 ml
$7.50
IM-37
Human red blood cells from Rh positive blood
5.0 ml
$7.50
IM-38
Human red blood cells unknown #1
5.0
ml
$7.50
IM-39
Human red blood cells unknown #2
5.0
ml
$7.50
IM-40
Human red blood cells unknown #3
5.0
ml
$7.50
12.
REAGENTS
FOR SEROLOGICAL TESTS FOR SYPHILIS - with directions
IM-41
VDRL antigen
5.0 ml (0.5 ml + 4.5 ml VDRL Buffer) $20.00
IM-42
RPR antigen
3.0 ml
$25.00
IM-43
Positive serum VDRL or RPR Tests
3.0 ml
$15.00
IM-44 Negative serum VDRL or RPR Tests
3.0 ml
$15.00
IM-45
Unknown serum #1 VDRL or RPR Tests
3.0 ml
$15.00
IM-46 Unknown serum #2 VDRL or RPR Tests
3.0 ml
$15.00
IM-47 Card for RPR Test
$1.00
13.
SPECIAL SUPPLIES AND REAGENTS FOR
IMMUNOLOGICAL REACTIONS
IM-48
Special agar deep for Outchterloney double diffusion analysis
$1.00
IM-49 Sepcial agar deep for electrophoresis or immunoelectrophoresis
$1.00
IM-50
Filter Paper or gauze wicks for electrophoresis
$1.00
IM-51
Buffer for electrophoresis 8 oz
$10.00
IM-52 Washing solution to remove unbound protein for ouchtorloney and
Immunoelectrophoresis
$15.00
IM-53 Staining solution for agar gels
$15.00
IM-54
Destaining or clearing solution for agar gels
$15.00
IM-55 Agar Coated slides for electrophoresis and
immunoelectrophoresis $12.00
doz.
IM-56
Blood plate for neutralization reaction for toxin-antitoxin
systems
$1.50
IM-57 Precipition tubes (6 X 50 mm)
$3.00
doz.
IM-58
Capillary tubes for precipitation reactions
$3.00
doz.
IM-59
LABORATORY HANDOUTS on principles and procedures of
immunological and serological reactions
$5.00
We take used equipment as trade in.
Call or write for details.
Phone: (312) 243-2016
Fax: (312) 243-2041
e-mail:iibbt@iibbt.com
14.
SLIDES
- PREPARED
Prepared
slides have a special place in teaching microbiology for they enable a
student to acquire an appreciation of cellular structure.
Cytological studies of this nature also enable a student to
develop an ability to search for detail, to identify special
structures and to relate structure with function.
This form of exercise thus enhances comprehension and prepares
one for further scientific pursuits.
Furthermore, when a student eventually prepares his or her own
slides, the experience gained with prepared slides enables the student
to judge and improve his or her technique.
Manual dexterity and neatness gained through such exercises is
extremely vital for becoming a good scientist.
BACTERIAL SLIDES
Bacterial smears showing typical shape
and arrangement
$2.50 ea/except as otherwise noted
PS-01
Bacillus cereus
PS-02
Bordetella pertussis
PS-03
Branhamella catarrhalis (previously Neisseria catarrhalis)
PS-04
Brucella abortus
PS-05
Clostridium tetani
PS-06
Clostridium perfringens
PS-07
Corynebacterium diphtheriae
PS-08
Escherichia coli
PS-09
Haemophilus influenza
PS-10
Lactobacillus casei
PS-11
Legionella pneumophilia ------------- $5.50 ea
PS-12
Listeria monocytogenes
PS-13
Micrococcus luteus (previously Sarcina lutea)
PS-14
Mycobacterium tuberculosis
PS-15
Mixed bacterial smear showing coccus, bacillus and spiral
shapes
PS-16
Neisseria gonorrhoeae
PS-17
Pasteurella pestis
PS-18
Pseudomonas aeruginosa
PS-19
Proteus vulgaris
PS-20
Salmonella typhosa
PS-21
Shigella dysenteriae
PS-22
Spirillum serpens
PS-23
Staphylococcus aureus
PS-24
Staphylococcus epidermidis
PS-25
Streptococcus pyogenes
PS-26
Streptococcus pneumoniae (previously Diplococcus pneumoniae)
PS-27
Streptococcus lactis
PS-28
Treponema pallidum
- - - - - - - - $10.50 ea
PS-29
Vibrio cholera - - - - - - - -
5.50 ea
Bacterial smears showing selected
cytology
Spore
stain
- - - - - -
-- - -- - - - $3.50 ea
PS-30
Bacillus subtilis stained with malachite green to show spores
PS-31
Bacillus subtilis stained with methylene blue to show unstained
spores
Capsule
stain
- - - - - - - - - - - - - - -
$3.50 ea
PS-32
Klebsiella pneumoniae showing capsule stained with Maneval's
solution
PS-33
Streptococcus pneumoniae showing capsules stained with
Maneval's solution
Flagella
Stain
- - - - - - - - - - - - - - - $10.50 ea
PS-34
Bacterial cells showing flagella
Metachromatic
granules
- - - - - - - - - - - - $5.50 ea
PS-35
Corynebacterium diphtheria stained with Albert's stain
Acid-fast
stain
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3.50 ea
PS-36
Acid-fast stain showing Mycobacterium tuberculosis
mixed
with non acid-fast bacteria
PS-37
TB Positive sputum smear stained with acid-fast stain
PS-38
TB Positive sputum smear unstained
- $1.75 ea
Cell
wall stain
- - - -- - - - - - - - - - - - $6.50
ea
PS-39
Bacillus subtilis stained to show cell walls
PS-40
Escherichia coli stained to show cell walls
Fat
granules
- - - - - - - - - - - - - - - - - $6.50 ea
PS-41
Bacillus subtilis stained to show fat granules
FUNGAL SLIDES (MOLDS AND YEASTS)
- - - - - - - $5.50 ea except as otherwise noted
PS-42
Aspergillus niger
PS-43
Penicillium notatum
PS-44
Rhizopus nigricans
PS-45
Saccharomyces cereviseae
PS-46
Trichophyton mentagrophytes
$10.50 ea.
PS-47
Trichophyton rubrum $10.50 ea.
PS-48
Microsporum canis $10.50 ea.
PS-49
Microsporum gypseum $10.50 ea.
PS-50
Epidermophyton fluccosum $10.50 ea.
PS-51
Sporothrix schenckii $12.50 ea.
PS-52
Coccidioides immitis $12.50 ea.
PS-53
Histoplasma capsulatum $12.50 ea.
PS-54
Blastomyces dermatitidis $12.50 ea.
PS-55
Candida albicans - yeast phase $
4.00 ea.
PS-56
Candida albicans - chlamydospores
$12.50 ea.
ACTINOMYCETES SLIDES
- - - - - - - - - $10.50 ea.
PS-57
Actinomyces bovis
PS-58
Actinomyces israelii
PS-59
Actinomyces viscosus
PS-60
Nocardia asteroides
PS-61
Streptomyces griseus
15.
STAINS
AND STAINING REAGENTS - PREPARED
The
following stains and staining reagents are supplied prepared, ready to
use in screw cap bottles. Prices
and quantities are as shown. A
booklet describing selected staining procedures is also available at
$5.00 each.
ACID
FAST STAINING
Ziehl-Neelsen's method
SR-01
Ziehl-Neelsen carbol fuchsin - 4 oz.
$8.00
SR-02
Acid alcohol - 8 oz.
$10.00
SR-03
Loeffler's Mehylene blue - 4 oz.
$5.00
Kinyoun's method
SR-04
Kinyoun's carbol fuchsin - 4 oz.
$8.00
SR-02
Acid alcohol for decolorizing - 8 oz.
$10.00
SR-03
Loeffler's Methylene blue - 4 oz.
$ 5.00
CAPSULE
STAINING
Maneval's method
SR-05
Congo red solution - 4 oz.
$8.00
SR-06
Maneval's solution - 4 oz.
$10.00
Novelli's method
SR-07
Alcian blue - 4 oz.
$8.00
SR-01
Ziehl-Neelsen's carbol fuchsin (same as for acid fast stain - 4
oz. $8.00
Tyler’s modification of Anthony's
method
SR-08
Acetic acid-crystal violet - 4 oz.
$5.00
SR-09
Copper sulfate solution - 4 oz.
$5.00
Muir's method
SR-01
Ziehl-Neelsen's carbol fuchsin - 4 oz.
$8.00
SR-10
Muir's mordant - 4 oz.
$10.00
SR-03
Loeffler's methylene blue - 4 oz.
$5.00
CELL
WALL STAINING
Dyar's method
SR-11
Cetyl pyridinium chloride - 4 oz.
$20.00
SR-05
Congo red (same as for capsule stain by the Maneval's method) -
4 oz. $8.00
Robinow's method
SR-12
Tannic acid - 4 oz.
$6.00
SR-13
Crystal violet solution (0.01%) - 4 oz.
$6.00
Hale's method
SR-14
Phosphomolybdic acid - 4 oz.
$20.00
SR-15
Methyl green solution - 4 oz.
$8.00
Tomcsik and Grace's method
SR-16
Alcian blue ethanolic solution - 4 oz.
$8.00
SR-01 Ziehl-Neelsen's carbol fuchsin (as for acid fast stain) - 4 oz.
$8.00
CYTOPLASMIC MEMBRANE
STAINING
Knaysi's method
SR-17
Knaysi's mordant - 4 oz.
$15.00
SR-01 Ziehl-Neelsen's carbol fuchsin (same for acid fast stain) - 4 oz.
$8.00
GRAM STAINING
SR-18
Crystal violet solution - 8 oz.
$6.00
SR-19
Gram's iodine solution - 8 oz.
$6.00
SR-20
Acetone alcohol - 8 oz.
$6.00
SR-21
Safranin solution - 8 oz.
$6.00
FAT DROPLET STAINING
Burdon's method
SR-22
Sudan black B solution - 4 oz.
$15.00
SR-23
Safranin solution, 0.25% aqueous - 4 oz.
$5.00
FLAGELLA STAINING
Leifson's method
SR-24
Leifson's flagella stain (supplied as dry powder -
prepare
fresh just before use) - 2.0 gm.
$8.00
SR-03
Loeffler's methylene blue - 4 oz.
$5.00
METACHROMATIC
GRANULES STAINING
Albert's method
SR-25
Albert's staining solution - 4 oz.
$10.00
SR-26 Lugol's iodine - modified - 4 oz.
$8.00
Methylene blue method
SR-27
Dilute alcoholic solution of methylene blue - 4 oz.
$6.00
SR-28
Sulfuric acid solutin 1% - 4 oz.
$5.00
NUCLEAR MATERIAL
STAINING
Robinow's method
SR-29
Hydrochloric acid IN - 4 oz.
$5.00
SR-30
Giemsa stain - 4 oz.
$8.00
SR-31
Basic fuchsin (aqueous) 0.3% - 4 oz.
$5.00
SR-32
Osmium tetroxide (supplied as dry crystals - prepare
fresh before use) 1/2 g.
$50.00
SR-33
Schaudinn's fixative - 4 oz.
$15.00
SR-34
Bouin's fixature - 4 oz.
$15.00
SPORE STAINING
Negative staining method
SR-03
Loefflers Methylene blue solution - 4 oz.
$5.00
Kinyoun's method
SR-04 Kinyoun's carbol fuchsin (same as for acid fast stain) - 4 oz. $8.00
SR-35
Alcohol - 4 oz.
$5.00
SR-03 Loeffler's Methylene blue solution - 4 oz.
$5.00
Wirtz method
SR-36
Malachite green solution - 4 oz.
$6.00
SR-21
Safranin (same as for Gram stain) - 4 oz.
$5.00
SIMPLE AND NEGATIVE
STAINING OF BACTERIA
Simple staining method
SR-18
Crystal violet solution - 8 oz.
$6.00
Negative, relief or indirect staining
method
SR-37
Nigrosine solution (bacteriological grade) - 4 oz.
$20.00
FUNGAL STAINS
Lactophenol cotton blue method
SR-38
Lactophenol cotton blue stain - 2 oz.
$15.00
SR-39
Clear mounting fluid - 2 oz. for permanent mounts
$15.00
SR-40
One-step staining and mounting fluid for permanent mounts -
contains
mounting
fluid and lactophenol cotton blue) - 2 oz.
$20.00
SR-41 BOOKLET DESCRIBING STAINING PROCEDURES
$5.00
ea
16.
BIOCHEMICAL
TESTS
Biochemical
tests are the heart of microbiological laboratory procedures.
These teach not only the basis of microbial identification but
also Chemistry and Biochemistry. From the philosophical standpoint, these procedures reveal
that life is possible with varying degrees of biochemical and
biological diversity. Appreciating
these parameters of life thus enhances a student's understanding of
life. Additionally, these
procedures help students understand their own nutrition and thus aid
in healthful living.
These
procedures are also important for understanding genetic engineering
for it is these procedures which help select strains with biochemical
traits of special interest. Markers
which may aid pathogenesis are also studied via similar procedures.
BIOCHEMICAL
TEST REAGENTS - PREPARED
The
following reagents for biochemical tests are supplied prepared, ready
to use in screw cap bottles. Prices
and quantities are as shown. A
booklet describing selected biochemical tests is also available at $
5.00 each. See below.
Bacitracin sensitivity test
(for identifying group A beta hemolytic streptococci)
BR-01
Bacitracin disks - vial of 50 discs for $8.50 ea.
Bile solubility test reagent
BR-02
Sodium taurocholate or bile solution - 4 oz. for $6.00 ea.
CAMP test reagent
BR-20
Filter strips or discs with staph beta hemolysin. l0 for
$10.00
.
Catalase test reagent
BR-03 Hydrogen peroxide solution 3% - 4 oz.
for $4.00
Coagulase test reagent
BR-04
Sterile plasma - reconstitute to 15 ml. for $20.00 ea.
DNAse test reagent
BR-05
Hydrochloric acid solution - 4 oz. for $5.00
Gelatin hydrolysis test reagent
BR-06
Acidified mercuric chloride - 4 oz. for $15.00
Gluconate oxidation reagent
BR-
Benedict reagent – 2oz. for $10.00
Hippurate hydrolysis reagent
BR-22
12% acidified ferric chloride - 4 oz. for $7.50
Indole test reagent
BR-07
Kovac's reagent - 4 oz. for $12.00
Mehyl red test reagent
BR-08
Methyl red solution - 4 oz. for $7.50
Nitrate reduction test reagents
BR-09
Sulfanilic acid - 4 oz. for $10.00
BR-10
N,N-dimethy1-α-naphthylamine(replaces α-naphthylamine
which has been shown to be carcinogenic) - 4 oz.
for $15.00
BR-11 Zinc dust suspension 1 oz.
for $5.00
Optochin
test reagent
BR-12
Optochin disks - vial of 50 disks for $8.50 ea.
Oxidase test reagent
BR-13
Para-amino-dimethyl-aniline oxalate - 2 oz. for $10.00
Phenylalanine deaminase test reagent
BR-14
Acidic ferric chloride solution - 4 oz. for $10.00
Phosphatase test reagent
BR-15
Ammonium hydroxide - 2 oz. for $7.50
Starch hydrolysis test reagent
BR-16
Modified Lugol's iodine solution - 4 oz. for $7.50
Voges-Proskauer test (VP test) reagent
BR-17
Potassium hyroxide solution 40% - 4 oz. for $5.00
BR-18
Alpha-naphthol - 4 oz. $10.00
BR-19
BOOKLET DESCRIBING SELECTED BIOCHEMICAL TEST PROCEDURES for $5.50
FREE CONSULTATION
If you are designing a new course or
are updating an old one - call us.
We can enable you to offer a very
comprehensive lab course at much less of a cost than you can imagine.
Call (312) 243-2016
Fax (312) 243-2041
e-mail: iibbt@iibbt.com
17.
RAPID
AND MULTITEST IDENTIFICATION SYSTEMS
MATERIALS
FOR RAPID BIOCHEMICAL IDENTIFICATION OF MICROORGANISMS
Since
1960 emphasis has been shifting to rapid identification of
micro-organisms using micro technics and multiple test procedures.
Conventional
procedures using media contained in test tubes and Petri plates were
found to be too cumbersome, time consuming and uneconomical. Consequently, mini methods using just one isolated colony as
the inoculum were developed. These
methods speed up the identification procedures and provide diagnostic
information in less time than the conventional methods.
They also use less space and are standardized so that persons
with a limited training can perform these procedures on a routine
basis.
The
first such method which became popular was the Enterotube method.
Subsequently, other methods such as the API followed.
Concurrently,
methods using multiple inoculating devices were also introduced.
These methods have the advantage in that they use conventional
procedures and, therefore, do not require retraining of personnel.
Since
rapid test procedures are becoming more popular and are likely to be
the methods of the future, it is suggested that a good microbiology
course include, at least as demonstrations, some of these rapid and
multitest procedures.
RAPID
AND MULTITEST IDENTIFICATION SYSTEMS
Catalogue
#
RM-01
Enterotube multitest system complete with directions
$8.50
ea tube
RM-02
API microtube strip system complete with directions
$8.50
ea strip
NOTE:
One tube or one strip is sufficient for demonstrating the respective
system per
class. Each tube or strip tests one organism.
If you wish to demonstrate reactions of more than 1 organism,
order as many additional tubes or strips as needed. Additional
reagents required are listed below.
Quantities shown are sufficient for up to 50 tests.
For Enterotube System:
RM-03
Kovacs
reagent 5.0
ml
$3.00
RM-04
Potassium
hydroxide 5.0
ml
$3.00
RM-05
Alpha
naphthol solution
5.0 ml
$3.00
RM-08
Oxidase
test reagent 10.0
ml
$5.00
For API System:
RM-06
Sterile
mineral oil
10.0 ml
$5.00
RM-03
Kovacs
reagent 5.0
ml
$3.00
RM-07
10% Ferric chloride
5.0 ml
$3.00
RM-04
Potassium
hydroxide (20%) 5.0 ml
$3.00
RM-05
Alpha naphthol solution
5.0 ml
18.
GLASS
AND PLASTICWARE AND MISCELLANEOUS LABORATORY SUPPLIES AND MATERIALS
DESCRIPTION AND RECOMMENDATIONS
Teaching
laboratories often get over equipped by purchasing too many
unnecessary items of glass and plasticware and other laboratory
supplies. In order to
curatail this waste a description of what is essential for teaching a
comprehensive course in microbiology is provided below.
Adhering to these guidelines and limiting purchases to what is
absolutely essential can cut costs drastically. Some of these essential supplies are supplied by the
institute (see page 30 for description of items and their catalogue
numbers).
Test Tubes
A
microbiology teaching laboratory will do well by selecting disposable
screw cap tubes of the following sizes:
13
x 100 mm
16
x 100 mm
16
x 125 mm
16
x 150 mm
20
x 150 mm
Of
these, the most versatile size is 16 x 150 mm and a fairly large
supply of these should always be kept on hand.
These should be used for maintaining cultures and for preparing
various types of media. The
use of plain tubes without screw caps for these purposes is wasteful
as they accelerate dehydration of media and cultures and thus increase
costs. These tubes also
require the use of various sizes of closures or cotton plugs which
consume both time and space and thereby increase costs.
A
microbiology laboratory however, should have some supply of plain
disposable test tubes. The
following sizes are recommended:
6
x 50 mm
for use as gas vials and for precipitin reactions
10
x 75 mm
for titration purposes
16
x 150 mm for
general purpose use
20
x 150 mm for
general purpose use
A
limited supply of 16 x 150 mm pyrex plain and screw cap tubes is also
desirable to have on hand, especially when specimens need to be boiled
in a water bath for a long period of time.
Disposable tubes will stand temperatures in a boiling water
bath for a short period of time and thus can be used for preparing
deeps which need to be melted prior to use.
Selecting
mostly screw cap tubes and a few plain tubes also does away with the
need of purchasing and storing test tube closures, as mere
non-absorbent cotton can be used in place of these closures. This
leads to an additional cost saving.
Also, while disposable glassware is referred to as such, it
almost always can be sterilized, washed, and reused.
Petri dishes
Disposable
plastic Petri dishes of 15 x 100 mm size are still the best buys.
Subsequent to use, these should be autoclaved and discarded.
These are available from the institute.
A
microbiological laboratory should also have a few 20 x 150 mm glass
Petri dishes. These come
in handy for immunological work such as incubating double diffusion
plates and immunoelectrophoresis plates.
But if you do not have these, standard plastic Petri plates
would do fine.
Slides, cavity slides, and cover slips
Slides:
Precleaned slides with one end frosted on one side are the best
buys for classroom purposes. Specimens can be identified by writing with an ordinary lead
pencil on the frosted edge. This
also helps students to know as to which side the smear was prepared,
thus avoiding problems with focusing under the oil immersion lens. Slides turned upside down cannot be focused under oil
immersion because the lens cannot get close enough to the specimen.
Used
slides should be discarded. Cleaning
and reusing them is not only time consuming but also suffers from the
drawback that smears can never be completely removed from them. Such residual smears add confusion when newly prepared smears
on these slides are to be examined.
For instance, smears of pure cultures of Gram negative
organisms made on slides previously used for making smears of Gram
positive organisms will appear mixed as both Gram negative (new) and
Gram positive (residual) cells will be seen.
Cavity slides:
Use single cavity slides.
Since cavity slides are expensive, these should be reclaimed.
It is best that students discard these into a separate
container containing a detergent solution.
Used slides should be autoclaved prior to washing.
Cover slips:
The most versatile size is 22 x 22 mm rectangular cover slips
of number 1 thinness.
Flasks
Erlenmeyer
flasks of 500 ml and 1,000 ml capacity are recommended sizes.
It is also advisable to have a few 250 ml capacity Erlenmeyer
flasks.
Round
bottom, Florence or other similar flasks are superfluous.
Beakers
Glass
or plastic beakers of 50 ml, 100 ml, 250 ml, 500 ml, and 1,000 ml
capacity are recommended sizes. Glass
should be preferred over plastic.
Graduated cylinders
Cylinders
of 100 ml, 250 ml and 1,000 ml capacity are recommended sizes.
Volumetric flasks
Volumetric
flasks with ground glass stopper of 100 ml, 250 ml, 500 ml, and 1,000
ml capacity are recommended but these are not essential.
Pipettes
Glass
disposable pipettes which can be cleaned and reused a few times are
the best buys. For
classroom purposes, 1.0 ml and 10 ml sizes of serological pipettes are
recommended. The useful
life of disposable glass pipettes can be increased provided the
pipettes are not left soaking in the detergent or the disinfectant
solution for unnecessarily long periods of time.
Syringes and Needles
Syringes:
1.0 ml, 5.0 ml, 10.0 ml, and 30 ml plastic sterile disposable
syringes are the best buys. It
is also advisable to have a few 50.0 ml glass syringes.
All syringes should be equipped with Luer locks.
Needles:
22 gauge 1 inch long and 18 gauge 1-1/2 inches long, sterile
disposable needles are recommended as these are versatile sizes.
Centrifuge tubes
While
there are a variety of centrifuge tubes, the best suited for
microbiological and general purpose work are the Corex brand tubes.
These are made of glass and are sturdy enough to withstand
sufficiently high speeds of centrifugation.
Recommended sizes are 15.0 ml and 25 ml sizes. Use only the screw cap centrifuge tubes.
Among
plastic centrifuge tubes, those made of polypropylene are recommended
as these are autoclavable. The
sizes recommended are 10.0, 30.0 and 48.0 ml capacity.
These should be screw cap tubes.
Filter flasks
250
ml, 500 ml and 1,000 ml sizes are recommended.
The 500 ml size is most versatile.
Funnels
Glass
and plastic funnels of approximately 100 mm top ID each are most
useful. Similar size
stainless steel funnels are also useful.
These funnels take a filter paper of 185 mm diameter.
To keep funnels of different sizes is wasteful.
It is good to have a few Buchner funnels though.
Membrane (bacteriological) filters
These
are essential but expensive items and if not purchased by first
reviewing your needs, can run into considerable expense.
We have found that the preassembled disposable filters of 25 mm
diameter, which attach to syringes, are the best buys.
Those which attach to syringes but which you have to assemble
yourself are uneconomical, for these are not only time consuming, but
one often loses their parts. This
is an additional expense and an aggravation, for one has to check the
catalogue to find which parts are lost and also to ascertain which is
the correct way of assembling them.
Faulty assembly causes leakage and the filtrate obtained from
poorly assembled filters can never be sterile.
The
preassembled disposable filters described above are useful for filter
sterilizing small quantities of fluids only.
For larger quantities one needs to have larger filters and
there is a diversity of sizes available.
But for classroom purposes, filters of 47 mm dia., which fit
into a glass or plastic filter assembly, are the most versatile as
these can be used for sterilizing liquids as well as for testing water
sewage and other liquids. The
funnel of these filters has a capacity of about 250 ml and this is
sufficient for most classroom needs.
These filters, however, are to be assembled and sterilized, but
if you limit their purchase to one size and brand, the problems due to
assembly and lost parts are manageable.
For
filter sterilizing, filters of 0.2 micron pore size are the best.
The Institute thus recommends and supplies filters of only this
pore size - see page 30 for price information.
MISCELLANEOUS
MATERIALS AND SUPPLIES
Catalogue
#
MM-01
Applicator sticks plain - 72 dozen per box
$12.00 box
MM-02
Cotton - absorbent
$12.50 lb.
MM-03
Cotton - nonabsorbent
$22.50 lb.
MM-04
Cover slips 22 x 22 mm #1
$5.50
oz.
MM-05
Detergent for glassware - 1 lb. canister
$15.60
MM-06
Disinfectant - 1 gallon
$15.00
MM-07
Dropper bottles for staining - polyethylene - 1 oz.
$1.75 ea.
MM-08
Filter paper 18.5 cm dia.
$15.25
pkg.
MM-09
Funnel glass - versatile 100 mm takes 18.5 cm filter
$6.50 ea.
MM-10
Funnel plastic - 100 mm takes 18.5 cm filter
$3.50
ea.
MM-11
Immersion oil - 4 oz.
$6.00
MM-12
Inoculating handles for loops and needles
$18.00
MM-12A
Nicrome wire for above handles
$5.00
MM-12B
Needles, nichrome wire for above handle
$3.00
MM-12C
Loops, nichrome wire for above handles
$5.00
MM-13
Inoculating loops of nichrome wire
with handles $4.00 ea.
MM-14
Inoculating needles of nichrome wire with handles
$2.75 ea.
MM-15
Lens paper - book of 50 sheets
$1.00 ea.
MM-16
Lens cleaner - 2 oz.
$5.50 ea.
MM-17
Membrane filters 25 mm dia., sterile disposable
$2.00
ea.
MM-18
Membrane filter assembly, plastic of 47 mm dia.
$75.00
ea.
MM-19
Filters for above 47 mm dia., 0.2 micron pore size –
packet of 100 filters
$65.00 pack
MM-20
Mounting fluid for permanent slides - 2 oz.
$7.00
MM-21
Petri plates disposable sterile - 500 per box
$65.00 box
-
20 per sleeve
$5.00 sleeve
MM-22
Plastic bags - autoclavable for disposing hazardous
material - 14" x 19"
$0.35
ea.
19" x 23"
$0.70 ea.
25" x 35"
$1.10 ea.
MM-23
Slides, cavity 1 x 3" with single cavity
$1.50 ea.
MM-24
Slides, 1 end frosted - 1/2 gross box
$6.00 box
MM-25
Slides - plain - 1/2 gross box
$5.50 box
MM-26
Swabs, sterile - 200 swabs
$11.75 box
MM-27
Teasing needles – straight
$2.00 ea.
MM-28
Teasing needles - angular point
$2.00 ea.
MM-29
Tongue depressors, 500/pkg.
$15.00 pkg.
MM-30
Tooth picks
$0.50 pkg.
MM-31
Vaseline for motility test - 1 oz.
$1.50
MM-32
Vaspar for sealing cover slips to slides - 2 oz.
$
4.50
MM-33
Wash bottles, 16 oz. Polyethylene
$4.00 ea.
MM-34
Wax marking pencil
$0.75 ea.
MM-35
Xylene - 8 oz.
$7.50
19.
THE
LABORATORY MANUAL -
A COMPLETE CURRICULUM
OF BASIC AND APPLIED MICROBIOLOGY
The
Institute provides a detailed laboratory manual which covers more ground
in a short period of time than other manuals.
It covers the entire discipline of microbiology - both basic and
applied - and thus enables the student to grasp the essense of this
subject quickly and thoroughly. The
manual is divided into 10 study units which are:
1.
Introduction to microbiology and microscopy
2.
Major groups of microorganisms, their identification and
cultivation
3.
Bacteria in our environment - isolation and pure culture
techniques
4.
Staining characteristics and cytological features of bacteria
5.
Biochemical activities of bacteria
6.
Identification and classification of bacteria
7.
Immunology
8.
Clinical microbiology
9.
Industrial and sanitary microbiology
10.
Virology, molecular biology, and genetic engineering
As
you can see, nothing meaningful is left out.
Rather, more material is covered than is generally covered in
most other manuals. The
concept of 10 study units provides sufficient time during a quarter, and
even more during a semester, to cover the units without undue pressure.
In fact, other manuals, which have 30 - 40 laboratory exercises
put the instructor and the students under undue pressure expecting them
to complete at least one exercise during each laboratory session.
The instructor and the students thus feel pushed to complete the
exercise which leaves no time for discussion.
The learning process is thus grossly short-changed.
In
contrast, the unit concept presented in this manual allows a minimum of
one whole week to cover one unit. The
unit includes not only the laboratory sessions, but other pertinent
material also. As a matter
of fact, relevant material in sufficient detail is presented such that
some instructors may find additional textbooks unnecessary.
A schedule of 2 to 3 three-hour sessions per week has worked well
with lectures, demonstrations, discussions, and laboratory experiments
all done during these hours.
Another
feature of this manual is that it considers memorization of material
detrimental to learning. Emphasis
is, therefore, placed on acquiring, understanding, and using concepts,
techniques, and skills. This is done through assignments included in the
manual which the student completes and hands in to the instructor for
comments and possible grading. A systematic atmosphere of learning is
thus generated. For the same reason, the objectives of each unit are clearly
listed in the beginning of each unit. These serve as a checklist of
goals to be achieved and help contain the vastness of the subject within
the grasp of comprehension.
Laboratory
supply kits containing all the materials
needed to complete each unit by a class of up to 30 students are
also available from the institute.
They take the bother out of setting up the laboratory.
In most cases all you need to do is open and display the contents
of the kit and proceed with teaching.
Together with the manual, they enable you to be a more effective
teacher. You, of course, do not have to buy the kits. The manual
provides detailed lists of supplies needed for each unit.
This gives you the option of checking your own stock and
purchasing only the supplies you need.
The manual can thus be used with or without the kits.
In either case all of the supplies you need are available from
the institute making their procurement easy.
The
manual is available from
the Institute at $20.00 each.