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Winter/Spring 2025 www.gloveboxsociety.org 19Part 3Factors to consider:%u2022 A %u201cSmaller%u201d hole, in pressure decay leak testing, in this case are 100%u00b5m (microns) (+100/-50%u00b5m (~1/10 of 1mm) in size).%u2022 Smaller detectable Holes in Pressure Decay leak testing of an elastomeric glove are normally caused by punctures from wires or needles. These punctures self-seal under normal operating conditions once the wire or needle retracts. By infl ating the glove to the test pressure, the hole is opened to the detectable hole size based on the test parameters.%u2022 The thicker the glove elastomer, the more force will be required to reopen the hole.%u2022 The smaller the hole, the greater the chance of what might be called particulate damming eff ect, where when the hole expands, particulates pile into the hole more and more as it expands creating a particulate dam in these small holes.A 200%u00b5m hole in a 20mil (0.5mm) thick PU/CSM glove, when infl ated to 1400Pa of pressure, will self seal at lower pressures and will remain sealed under normal operating conditions. So if this puncture is created during operations by a needle or a wire, when the needle or wire is retracted, no contamination will pass through this puncture unless the glove is stretched to open up the hole under abnormal operations. Hole size in glove vs ability for contamination to migrate through itGlove leak test parameters using a proper test pressure and a 200%u00b5m hole as the %u201ctarget fail%u201d hole size for the glove, will detect and fail the above glove before the hole becomes large enough to allow contamination of the product or the operator and laboratory.The glove integrity testing experts at MK can help you detect these holes in your gloves before they get big enough to create a costly problem in your operations.Continuing the discussion on determining the correct detectable glove leak test Hole Size for a glovebox glove. Most signifi cant, is the size of hole that under normal operating conditions would allow %u201cthe contaminants%u201d to migrate through the hole and either contaminate the product or the operator.MK Glove Test Device Generation 3 with associated Glove Integrity Test System software. The visual interface to test your gloves in a fast and effi cient way.From the experts in Glove Integrity, you can now get the highest consistent quality gloves. %u2022 Providing confi dence in your glove supply%u2022 Local US stock of gloves for fast deliveries %u2022 Shortest scientifi cally backed glove test parameters for glove type/materialPhoenix Office13370 W. Foxfire Drive, Ste. 103Surprise, AZ 85378Steve ChungloPhone: +1-928-273-6970steve.chunglo@mk-metalfree.comwww.mk-metalfree.comMK Metalfree Corp.~Advertisement~