Plot No. C40, Road No. 21Y, MIDC, Wagle Industrial Estate, Thane(W)-400604, MH, India
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Nutrient Agar No.2
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$39.60
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SKU:
M1269S
Can be used as a general purpose culture medium. It is recommended by BIS committee under the specifications IS:5887(Part I,II and V)-1976.
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Nutrient Agar No. 2 is used as a general purpose culture media. It is in accordance with BIS under the specification IS:5887 (Part-I) 1976 reaffirmed 1986, IS:5887 (Part-II) 1976 and IS:5887 (Part-V) 1976 reaffirmed 1986.
Composition**
| Ingredients | Gms/Litre |
|---|---|
| Peptic digest of animal tissue | 10.000 |
| Meat extract | 10.000 |
| Sodium chloride | 5.000 |
| Agar | 15.000 |
| Final pH (at 25°C) | 7.5±0.2 |
**Formula adjusted, standardized to suit performance parameters
Directions
Suspend 40 grams in 1000 ml distilled water. heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Mix well and pour in sterile Petri plates.
Principle And Interpretation
Nutrient Agar is a general purpose medium used for the examination of water and dairy products according to Standard Methods for the Examination of Water and Waste water (1) and Dairy Products (2). Nutrient Agar No. 2 is used in microbiological analysis of water by Czech Standards. It can also be used for cultivating several less fastidious microorganisms. It is recommended by BIS for the cultivation of Escherichia coli, Staphylococcus aureus and Vibrio from food samples (3,4,5). Nutrient Agar with 0.8% sodium chloride and pH 6.0 is used for cultivation of bacteria requiring slightly acidic conditions. Nutrient media may be used as enriched media by addition of 10% blood or other biological fluids like ascetic fluid, serum etc.
Meat extract and peptic digest of animal tissue provide the necessary nitrogen compound, carbon, vitamins and also some trace ingredients to nonfastidious organism like Bacillus subtilis and Staphylococcus aureus. Sodium chloride maintains osmotic equilibrium of the medium.
Quality Control
Appearance Cream to yellow homogeneous free flowing powder
Gelling Firm, comparable with 1.5% Agar gel
Colour and Clarity of prepared medium Light yellow clear to slightly opalescent gel forms in Petri plates
Reaction Reaction of 4.0% w/v aqueous solution at 25°C. pH : 7.5±0.2
pH 7.30-7.70
Cultural Response
Cultural characteristics observed after an incubation at 35-37°C for 18-24 hours.
Cultural Response
| Organism | Inoculum (CFU) | Growth | Recovery |
|---|---|---|---|
| Enterobacter aerogenes ATCC 13048 | 50-100 | luxuriant | >=70% |
| Escherichia coli ATCC 25922 | 50-100 | luxuriant | >=70% |
| Enterococcus faecalis ATCC 29212 | 50-100 | luxuriant | >=70% |
| Klebsiella pneumoniae ATCC 13883 | 50-100 | luxuriant | >=70% |
| Pseudomonas aeruginosa ATCC 10145 | 50-100 | luxuriant | >=70% |
| Staphylococcus aureus ATCC 25923 | 50-100 | luxuriant | >=70% |
| Salmonella Typhimurium ATCC 14028 | 50-100 | luxuriant | >=70% |
Storage and Shelf Life
Store below 30°C in tightly closed container and the prepared medium at 2-8°C. Use before expiry date on the label.
Reference
- Greenberg A.E., Trussell R.R. and Clesceri L.S. (Eds.), 1985, Standard Methods for the Examination of Water and Wastewater, 16th ed., APHA, Washington, D.C.
- American Public Health Association, 1978, Standard Methods for the Examination of Dairy Products, 14th ed., APHA, Inc., Washington, D.C.
- Bureau of Indian Standards IS:5887 (Part-I) 1976, reaffirmed 1986.
- Bureau of Indian Standards IS:5887 (Part-II) 1976, Second Reprint December 1994.
- Bureau of Indian Standards IS:5887 (Part-V) 1976, reaffirmed 1986.
| Product Name | Nutrient Agar No.2 |
|---|---|
| SKU | M1269S |
| Product Type | Regular |
| Physical Form | Powder |
| Origin | Animal |
| Packaging type | HDPE |
| References | 1.Greenberg A.E., Trussell R.R. and Clesceri L.S. (Eds.), 1985, Standard Methods for the Examination of Water andWastewater, 16th ed., APHA, Washington,D.C.2.American Public Health Association, 1978, Standard Methods for the Examination of Dairy Products, 14th ed., APHA, Inc.,Washington,D.C.3.Bureau of Indian Standards IS:5887 (Part-I) 1976, reaffirmed 1986.4.Bureau of Indian Standards IS:5887 (Part-II) 1976, Second Reprint December 1994. |
| Customized Product Available | No |
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