Ophthalmic optics. Contact lens care products. Antimicrobial preservative efficacy testing and guidance on determining discard date Ingestion-build-64721 DD IEC/TS 61994-4-2:2011 includes some

DD IEC/TS 61994-4-2:2011 includes some technical changes with respect to DD IEC/TS 61994-4-2:2003

and leakage current

self-contained

BS EN 13774 provides the manufacturers with guidelines for requirements for type tests and production tests which can assess the endurance and the performance of the equipment

the usage of insulating liquids also varies

Ophthalmic optics. Contact lens care products. Antimicrobial preservative efficacy testing and guidance on determining discard date Ingestion-build-64721 DD IEC/TS 61994-4-2:2011 includes some1 Scope This International Standard specifies a procedure to be used in evaluating the antimicrobial preservative activity of all preserved multidose contact lens care products, and provides guidance on methods for determination of discard date as informative annexes. This test is applicable to products for up to a 28 day discard date. The test is not applicable to sterile products packaged in unit doses for single use or multidose containers designed