Perritt Laboratories is a cGMP, ISO/IEC 17025 accredited laboratory providing child-resistant package testing and microbiological testing services. Since 1973, we've tested thousands of different packaging systems for child-resistance and senior-use effectiveness in accordance with US and International standards. We also specialize in microbiological testing for the pharmaceutical and consumer product industries. Our testing evaluates preservative efficacy, detects product contamination, and monitors controlled environments & purified water systems. Perritt Laboratories combines expert testing with personalized service.