Replacement parts for your Nelson NS40, NS30, and NS20 stud guns used on Nelson equipment including the following welders: Arc Charger N550c, N1500i, Nelweld 4000, Nelweld 6000, Series 4000, 4500, 4800, and 4900. Synthetic blood fluid penetration resistance for face masksĪdditional tests to consider for surgical face masks:įor masks that require respirator precertification (e.g., NIOSH N95), please see the Respirator Precertification test page.ĭownload our face mask testing requirements to assist you in determining which test is required for your location. Our accessories work with all Nelson CD guns and welders including: Nelson NCD 60, 100, 150, 100SA and Nelson NCD+ 1000, 1600, 3200.The 1100 Series is truly advanced and modern in design, technology, and execution. Particle filtration efficiency: Latex particle challenge The Boulder 2100 Series continues to dominate high-performance audio.The Delta P test is performed to determine the breathability of masks by measuring the differential air pressure on either side of the test article using a manometer, at a constant flow rate of 8 L/min.Bacterial or Viral Filtration Efficiency (BFE/VFE).These tests are essential to ensuring performance properties are validated to support marketing label claims and to classify these mask types.įor CE marking submissions, additional tests may be required depending on label claims.

Nelson Labs offers a comprehensive set of tests for surgical face masks and general-use medical masks. If you are interested in manufacturing face masks or respirators the FDA has put together this new web resource that helps answer your questions and provides next steps for action.

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