The European Pharmacopeia describes in General Text 5.1.3, the assay they recommend for testing preservative efficacy. The EP divides products into three tables:
5.1.3-1 - Parenteral and ophthalmic preparations
5.1.3-2 - Topical preparations
5.1.3-3 - Oral preparations
Each category of products is challenged with four microorganisms independently and samples are taken at intervals specified for each category throughout 28 days.
Scientists in our In-Vitro testing labs are well trained on ASTM, AATCC, AOAC, CLSI and EN standard methods. The efficacy testing services of this laboratory include MIC/MBC, ...Learn More