NSF Product and Service Listings

[2] These products are designed to be flushed out prior to using the system for drinking 
    water. Before being placed into service, the well is to be properly flushed according 
    to the manufacturer's use instructions. Certification of these products is based on 
    the well drilling model with the following assumptions:
       - The amount of well drilling fluid is 3780 L (1000 U.S. gallons) to which the 
         drilling fluid has been added at the manufacturer's recommended level. 
       - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
         acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
       - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
         length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
       - The amount of well drilling fluid removed from the well during construction is 
         equal to the combined volumes of the casing and the screen, plus an additional 
         amount removed through the well disinfection and development (90% removed). 
       - This product should not be used in constructing wells in highly porous 
         formations, such  as cavernous limestone.
[3] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.
    This product has been evaluated to the requirements of NSF/ANSI/CAN 60, Annex C,
    utilizing an additional test based on the ASTM Standard G22 to ensure the product does
    not support microbial growth.
[4] Certification of this product is based on a well drilling model using assumption in
    NSF/ANSI/CAN 60, Section 8 for well drilling foamers.
[5] This product is designed to be used off-line and flushed prior to using the system for
    drinking water, following manufacturer's use instructions.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.

[2] These products are designed to be flushed out prior to using the system for drinking 
    water. Before being placed into service, the well is to be properly flushed according 
    to the manufacturer's use instructions. Certification of these products is based on 
    the well drilling model with the following assumptions:
       - The amount of well drilling fluid is 3780 L (1000 U.S. gallons) to which the 
         drilling fluid has been added at the manufacturer's recommended level. 
       - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 
         acre aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
       - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in 
         length (20 ft.), and the bore hole is 25.4 cm in diameter (10 in.).
       - The amount of well drilling fluid removed from the well during construction is 
         equal to the combined volumes of the casing and the screen, plus an additional 
         amount removed through the well disinfection and development (90% removed). 
       - This product should not be used in constructing wells in highly porous 
         formations, such  as cavernous limestone.
[PC] Polyacrylamide Products Certified by NSF International comply with 40 CFR 141.111
     requirements for percent monomer and dose.