To enable product users to meet bid specification requirements to use NSF 61 Certified products in drinking water applications. Use of NSF 61 Certified products protects public health safety and makes it easy for water utilities to install products that comply with the Safe Drinking Water Act (SDWA) requirements. If you have additional questions relating to NSF/ANSI Standard 61 or NSF's certification services, contact Dave Purkiss at 734-827-6855 or purkiss@nsf.org.

NSF/ANSI Standard 61 - Drinking Water System Components was published in 1988 to establish minimum requirements for the control of potential adverse human health effects from products that contact drinking water. NSF/ANSI Standard 61 includes criteria for testing and evaluating products to ensure they do not leach contaminants into the water that would be a health concern.

NSF can perform a range of performance and health based testing to meet the needs of stakeholders.

NSF/ANSI Standard 61 is overseen by the NSF Drinking Water Additives Joint Committee. This committee has a balance of 1/3 public health regulatory members, 1/3 product manufacturer members, and 1/3 product user representatives. Any proposal to revise the standard is typically assigned to a task group composed of joint committee members and external experts. Task group members are assigned by the chairman of the joint committee. One standing group is the Health Advisory Board.

NSF/ANSI Standard 61 requires all metallic products and components to be evaluated for the leaching of lead as well as other metal contaminants. Metallic pipe, fittings, valves, and other mechanical devices are all tested with two specially formulated waters. One is pH 5 and another pH 10. The pH 5 test water is especially aggressive for copper, chromium, nickel, and antimony.

Application - NSF/ANSI Standard 61 requires a disclosure by the manufacturer of all water contact materials in the product and a disclosure by the manufacturer's material suppliers of all chemical ingredients in the materials. Formulation, toxicology and product use information - Client and suppliers complete and submit NSF's Product Information Form. This provides formulation, toxicology and product use information.

No. This misconception started when an article reported that a small lead device was tested to the NSF/ANSI Standard 61 test protocol and it passed for lead. A close reading of the article shows that the lead device was only tested with the pH 5 test water. It was not tested with the pH 10 test water, which is required by the standard.

Compared to plain carbon steel, stainless steels (there are more than 300 grades) contain at least 12% Chromium - a metal that is intrinsically corrosion resistant. Because of this alloying, stainless steels form a tightly-adherent and protective oxide layer which is so thin that the metallic coloration of the underlying steel is visible. The oxide layer that forms in ambient environments on plain carbon steels (i.e.

Grade of stainless steel used for capsules and liquid contact parts is ASI 316L. ASI 316 is accepted by FDA for use in Pharma industry. FDA approved materials were used during manufacture of product contact materials (Polyacetal, Teflon, Polyethylene, Anodised aluminium...). A complete list of materials of construction will be attached in the validation documentation. Certificates will be provided after purchase.

is another way of referring to 304 stainless and similar alloys (301, 302, etc.). The 18-8 refers to the 18% Chromium and 8% Nickel content of 304 (see the table above), with no more than 0.08% Carbon.

This is not a skill everyone can acquire. Thin stainless can be spot-welded which is suitable for the combustion chamber and case. The NGV assembly will require MIG or TIG welding. TIG sets are expensive and it may be necessary to find a specialist welder used to welding stainless steel to do the welding for you. Modern engines employ a casting for the NGV which is more stable during natural heat cycling.

NSF Standard 61, Section 9 relates to the amount of lead leached from a product while the definition of "lead free" for pipe and pipe fitting corresponds to a maximum of 8% lead content. By amending Section 1417 of the SDWA, Congress incorporated a performance standard into the law for endpoint devices intended to "dispense water for human consumption.

Answer: Check out the "Standard Finishes” section for a description and visual comparison of all the standard finishes available. Answer: The usual “condition” that stainless steel products (sheets, plates, bars, wire etc.) are supplied to is the “annealed” condition.