The microbiological safety of products is a major prerequisite for consumer protection and guarantees an adequate shelf life of products containing preservatives. Testing for adequate preservation – as a microbiological test – is one way of using experiments to test the efficacy of a preservation system or the product’s intrinsic antimicrobial properties. The Preservative Burden Test (PBT) test system can be applied to a wide variety of product groups.
Labor LS tests:
- Medical devices
- Household products and consumer goods
- Building materials and products of the chemical industry.
We perform preservative burden tests on the basis of various regulatory requirements:
- Testing pharmaceuticals for adequate preservation, including in accordance with Ph. Eur., USP, JP
- Checking the suitability of the microbial count method
- Proof of efficacy of the neutralisation agent
- Bioburden test according to, for example, DIN EN ISO 11930 (for cosmetic products)
- DIN EN ISO 14730 (for contact lens solutions)
- Testing biocidal products, for example, in accordance with IBRG or ASTM methods
We would be pleased to develop customer- and product-specific methods and test procedures on a customised basis. Here, our customers can determine the relevant test parameters, such as the selection of test microbes, the use of test microbes as single-microbe or mixed microbe suspension, single or repetitive inoculation of the sample, selection of test time points and evaluation criteria individually.