Non-sterile products

Adequate preservation and biocide testing

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:

  • Pharmaceuticals
  • Medical devices
  • Cosmetics
  • 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.

Your contacts on this topic

We would be pleased to advise you and prepare an individual quotation for you! For more information and enquiries, please contact our team of experts:

Christine Weiß

Microb. testing of non-sterile products
+49 9708 9100-716

Sebastian Milbord

Microb. testing of non-sterile products
+49 9708 9100-311