Casein-peptone lecithin polysorbate broth (base) is a granulated medium recommended for general microbiological analysis. The granules ensure rapid and uniform dissolution in water, prevent clumping of the medium, and inhalation of the airborne powder. Casein enzymic hydrolysate provides the nitrogen, vitamins, amino acids, and carbon in the broth base. Casein peptone in the medium present optimal conditions for the spore germination and regeneration of the damaged microorganisms. Lecithin and polysorbate 20 inactivate many antimicrobial compounds.
Casein-peptone lecithin polysorbate broth (base) is recommended for diluting samples of pharmaceutical, cosmetic, and other raw materials or final products for determining the total microbial counts.
Appearance (clearness): clear to almost clear
Appearance (colour): yellowish
pH-value (25 °C): 6.9 - 7.3
Growth (Staphylococcus aureus ATCC 6538 (WDCM 00032)): +
Growth (Pseudomonas aeruginosa ATCC 9027 (WDCM 00026)): +
Growth (Bacillus subtilis ATCC 6633 (WDCM 00003)): +
Growth (Candida albicans ATCC 10231 (WDCM 00054)): +
Growth (Aspergillus brasiliensis (formerly A. niger) ATCC 16404 (WDCM 00053)): +
Incubation: 24 hrs.; 35 °C; aerobic;
Aspergillus und C.albicans up to 3 days; 20 - 25 °C; aerobic .
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany