Total Viable Count (TVC) testing is essential for determining the condition of a water based cosmetic product. The TVC test counts the total numbers of microorganisms (bacteria, yeast and moulds) that may be present in the finished product.
The test provides an indication of the overall level of contamination in a product – it does not identify which specific species of microorganisms are present.
This test indicates whether there are sources of contamination present (either from raw materials, water, mixing equipment, filling lines or packaging).
Testing will require 250 g of your sample.
The sample is diluted to obtain a suspension of any microbial contamination that may be present.
The extracted liquid is then dispersed in special growth media and incubated.
After the incubation period (48 hours for bacteria and 5-7 days for fungi) any colonies that were formed are counted.