Bioburden Testing for Food & Beverages

Merck’s membrane filtration and/or culture media solutions for bioburden testing won't keep you waiting for the accurate results you need to ensure product safety.

Membrane Filtration – The Standard Test Method
for Microbial Contamination

Merck’s membrane filtration technique complies with international standards such as Standard Methods for Examination of Water and Waste Water, US EPA, and EU testing procedures for drinking water. It’s simple: the test sample is filtered through a microporous membrane, allowing the retention of any microbial contamination on top of the membrane. Rinsing removes residues that might inhibit the growth of microorganisms. Once the sample is filtered, nutrient medium is added to promote growth of microorganisms for recovery. For testing non-filterable samples, Merck offers a large selection of culture media of the highest quality.