Nutrient HiVeg™ Broth, pH 6.9 w/o NaCl

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SKU:
MV088
Recommended as general purpose medium for the cultivation of microorganisms.


Intended use

Recommended as general purpose medium for the cultivation of microorganisms.

Composition

Ingredients g/L
HiVeg® peptone 5.000
HiVeg® extract 3.000
Final pH (at 25°C) 6.9±0.2

**Formula adjusted, standardized to suit performance parameters

Directions

Suspend 8.0 grams in 1000 ml purified/distilled water. Heat if necessary to dissolve the medium completely. Dispense into tubes or flasks as desired. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes.

Principle And Interpretation

Nutrient Broth with pH 6.9 and devoid of NaCl is a relatively simple formulation containing HM Peptone B and peptone which can support the growth of non-fastidious microorganisms. It provides nitrogenous and carbonaceous compounds, long chain amino acids and other essential growth nutrients. It has the formula originally developed for use in Standard Methods for the Examination of Water and Waste Water (1). Nutrient HiVeg® Broth, pH 6.9 w/o NaCl is same as Nutrient Broth, pH 6.9 w/o NaCl except that the animal based peptones are completely replaced with the vegetable peptones to avoid the BSE/TSE risks associated with animal peptones.

HiVeg® peptone and HiVeg® extract provides nitrogenous and carbonaceous compounds, long chain amino acids and other essential growth nutrients. If this medium is incorporated with 6.5% sodium chloride, then it acts as a differential and selective agent by interfering with the osmotic balance and the permeability of membrane of majority of microorganisms. On addition of 6.5% Sodium chloride, the medium can also be used to determine salt tolerance of bile esculin positive Enterococci (2).

Type of Specimen

Water samples.

Specimen Collection and Handling

For water samples, follow appropriate techniques for sample collection, processing as per guidelines and local standards.(1) After use, contaminated materials must be sterilized by autoclaving before discarding.

Warning and Precautions

Read the label before opening the container. Wear protective gloves/protective clothing/eye protection/ face protection. Follow good microbiological lab practices while handling specimens and culture. Standard precautions as per established guidelines should be followed while handling specimens. Safety guidelines may be referred in individual safety data sheets.

Limitations

  • Individual organisms differ in their growth requirement and may show variable growth patterns on the medium.

Performance and Evaluation

Performance of the medium is expected when used as per the direction on the label within the expiry period when stored at recommended temperature.

Quality Control

Appearance
Cream to yellow homogeneous free flowing powder

Colour and Clarity of prepared medium
Light amber coloured clear solution without any precipitate

Reaction
Reaction of 0.8% w/v aqueous solution at 25°C. pH : 6.9±0.2

Cultural Response

pH
6.70-7.10

Cultural characteristics observed after an incubation at 35-37°C for 18-48 hours.

Organism Inoculum
(CFU)
Growth
# Klebsiella aerogenes
ATCC 13048 (00175*)
50-100 good-luxuriant
Enterococcus faecalis
ATCC 29212 (00087*)
50-100 good-luxuriant
Escherichia coli ATCC
25922 (00013*)
50-100 good-luxuriant
Salmonella Typhi ATCC
6539
50-100 good-luxuriant
Staphylococcus aureus
subsp. aureus ATCC
25923 (00034*)
50-100 good-luxuriant
Staphylococcus epidermidis
ATCC 12228 (00036*)
50-100 good-luxuriant

Key: *Corresponding WDCM numbers # Formerly known as Enterobacter aerogenes

Storage and Shelf Life

Store between 10-30°C in a tightly closed container and the prepared medium at 15-30°C. Use before expiry date on the label. On opening, product should be properly stored dry, after tightly capping the bottle in order to prevent lump formation due to the hygroscopic nature of the product. Improper storage of the product may lead to lump formation. Store in dry ventilated area protected from extremes of temperature and sources of ignition Seal the container tightly after use. Product performance is best if used within stated expiry period.

Disposal

User must ensure safe disposal by autoclaving and/or incineration of used or unusable preparations of this product. Follow established laboratory procedures in disposing of infectious materials and material that comes into contact with sample must be decontaminated and disposed of in accordance with current laboratory techniques (3,4).

More Information
Product Name Nutrient HiVeg™ Broth, pH 6.9 w/o NaCl
SKU MV088
Product Type HiVeg™
Physical Form Powder
Origin Animal Free (Veg)
Packaging type HDPE
Customized Product Available No
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