Buffered Peptone Water in Bags

ISO 6579
ISO 6887
according to GB 4789.30-2016
according to GB 4789.40-2016
according to ISO 21528-1:2017
according to ISO 22964:2017

sterile

liquid

limited shelf life, expiry date on the label

ready-to-use

casein peptone, 10 g/L
di-sodium hydrogen phosphate 12H₂O, 9 g/L
potassium dihydrogen phosphate, 1.5 g/L
sodium chloride, 5 g/L

microbiological culture: suitable

7.0±0.2 (25 ℃)

environmental
food and beverages
industrial qc
pathogen testing
sample preparation
microbiology

Citrobacter ssp.
Cronobacter ssp.
Escherichia coli
Klebsiella ssp.
Proteus ssp.
Providencia ssp.
Pseudomonas ssp.
Salmonella spp.
Shigella ssp.
Staphylococcus ssp.
Streptococcus ssp.
Yersinia ssp.
bacteria
coliforms
enterobacteriaceae

Buffered peptone water in bags is a pre-enrichment medium designed to help the recovery of sub-lethally damaged microorganisms before transferring to a selective medium. This pre-enrichment medium is free from inhibitors and is well buffered and provides conditions for resuscitation of the cells that have been injured by processes of food preservation. The media contains Peptone including an enzymatic digest of casein as a source of carbon, nitrogen, vitamins, and minerals. Sodium chloride maintains the osmotic balance and phosphates buffer the medium. The broth is rich in nutrients and produces high resuscitation rates for sub-lethally injured bacteria and supports intense growth.

Buffered Peptone Water is used as :

• a non-selective pre-enrichment medium for the detection of Salmonella in food products and environmental specimens. It complies with the standard EN ISO 6579 (1) and amendment A1 (annex D) (8),
• a diluent for the enumeration of the micro-organisms. It complies with the standards EN ISO 6887 (2, 3, 4, 5) and 8261 (6),
• a diluent for the enumeration of Listeria monocytogenes. It complies with the standard EN ISO 11290-2 (7).

12 - Non Combustible Liquids

nwg