Description
The purpose of this Standard is to establish minimum requirements for materials, design and construction, and performance of drinking water treatment systems that are designed to reduce specific health-related contaminants in public or private water supplies.
This Amendment contains the following revisions:
- Issue 94 – The revision corrects an error recently found in NSF/ANSI 53. When the standard was reformatted several years ago, section 1.3 – Alternate materials, designs, and construction was mistakenly omitted (it is currently still listed in NSF/ANSI 42). This language has been reinserted to its previous location under section 1.
- Issue 95 – The revision allows for a shorter cycle time for performance indication devices (PID) during the flow test method under section 6.
- Issue 96 – The revision allows for alternate methods for enumerating the stock oocyst and microsphere suspensions.
- Issue 97 – The revision removes the reference to using formaldehyde as a disinfectant when perparing oocyts in the procedure under Annex A of NSF/ANSI 53.
Product Details
- Published:
- 08/01/2014
- ANSI:
- ANSI Approved
- Number of Pages:
- 16
- File Size:
- 1 file , 690 KB
