Perritt Laboratories is an ISO 17025 accredited, independent, cGMP company providing microbiological & child-resistant package testing and consulting services. Our microbiological testing detects product contamination, develops & validates test methods, evaluates preservative efficacy (AET), monitors controlled environments and tests water systems. We conduct child-resistant package testing in accordance with US & international standards. Companies rely on us for quality testing, expert advice, personalized service.