Description
General description
Lactose Broth is an inhibitor-free granulated medium for the use in the presumptive testing for coliforms, especially E. coli, and the enrichment of Salmonella. The granules ensure rapid and uniform dissolution in water, it also prevents clumping of the medium and inhalation of the airborne powder. Lactose utilization is indicated by gas production. The gas liberated is collected in Durham′s tubes. Peptone present in the medium supply nitrogenous and carbonaceous compounds, long-chain amino acids, and other essential nutrients to the organisms. Lactose is a fermentable carbohydrate for the coliforms.
Application
Lactose Broth is recommended for the performance and confirmation of the presumptive test to detect coliform bacteria in food, water, dairy, and Pharmaceutical products.
PROPERTIES
Agency
APHA
EP
USP
Pack Size
500g
reg. compliance
FDA (BAM)
form
medium granules (dehydrated (DCM))
manufacturer/tradename
GranuCult®
technique(s)
microbiological culture: suitable
pH
6.7-7.1 (25 °C, 13 g/L in H2O)
bulk density
650 kg/m3
application(s)
food and beverages
microbiology
storage temp.
15-25°C
suitability
Salmonella spp.
Legal Information
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
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