Presentations by NSF International
Matches: 6
Membrane Product Specific Challenge Test Results under the LT2ESWTR with Endospores as Cryptosporidium Surrogate
The challenge testing of four low pressure membranes manufactured by two companies, Siemens and DOW Chemical, was performed in a laboratory in accordance with the Membrane Filtration Guidance Manual (MFGM) developed for the Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR). Direct integrity testing (DIT) was performed before and after c...
Overview of NSF International Facility
This presentation discusses the mission, history, and capabilities of NSF International. The presentation incudes a listing of accreditations, certifications, and focus areas. A list of water and wastewater standards is also provided....
Ultrafiltration Membrane Module Virus Reduction at Different Fluxes and With Cut Fiber
NSF International evaluated The Dow Chemical Company SFD-2880 UF membrane module for MS2 reduction at four different fluxes, and also with and without a cut fiber, to compare MS2 log reduction under the different scenarios. All tests were conducted in accordance with the U.S. Environmental Protection Agency (EPA) Long Term 2 Enhanced Surface Water ...
Comparison of the California Department of Public Health and EPA Protocols for Determination of Ultrafiltration Module Log Removal Values
This paper discusses the US EPA Membrane Filtration Guidance Manual and the differences involved the selection of modules for challenge testing. The various test methods are compared and contrasted. The conclusion is to harmonize these protocols, offering manufacturers both NSF certification and data to submit for CDPH approval from the same suite...
Facilitation of Advances in UF Membrane Validation through a Third Party Consensus Standard
The EPA sponsored regulations for testing the integrity of UF/MF membranes expired in 2013 and have been replaced with NSF/ANSI Standard 419. The standard provides more specific testing requirements and has the possibility of being updated annually to remain current with the industry. Standard 419 does not apply to RO/NF membranes....
NSF/ANSI 419: A New National Standard for Membrane Filtration
This paper presents NSF/ANSI 419 Public Drinking Water Equipment Performance - Filtration, a new NSF/ANSI national standard for microfiltration (MF) and ultrafiltration (UF) membrane modules. This new standard establishes performance testing protocols that are consistent with the product-specific microbial challenge testing requirements for Cryptos...