PERFORMANCE DATA SHEET
MANUFACTURER:
Product:
2-Stage Filtration System, Model US-2
Testing Conditions:
Flow Rate: 0.5 gpm (1.9 Lpm)
Inlet Pressure: 60 psi (4.1 bar)
Operating Requirements:
Rated Service Life: 500 gallons (1,893 Liters)
Pressure Range: 30-100 psi (207-689 kPa)
Rated Service Flow: 0.5 gpm at 60 psi (1.9 Lpm and 4.1 bar)
Temperature Range: 40-100 ºF (4.4-37.7 ºC)
Substance Reduction:
This system has been tested and certified by the NSF International according to NSF/ANSI 42/53 for
the reduction of the substances listed below. The concentration of the indicated substances in water
entering the system was reduced to a concentration less than or equal to the permissible limit for water
leaving the system, as specified by NSF/ANSI 42/53.
While testing was performed under standard laboratory conditions, actual performance may vary.
Substance
Chlorine
Particulates Class
I (≥ 0.5 µm - <
1 µm)
Atrazine
Lindane
Lead (pH 6.5)
Lead (pH 8.5)
Cyst
Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfec-
tion before or after the system.
Systems certified for cyst reduction may be used on disinfected water that may contain filterable cysts.
Replacement Cassette is US-2-R, which can be found at select retailers. It should be replaced every 6
months for best results. Refer to the product manual for more specific product information, installation
instructions and instructions on replacing the filter cartridge.
THE US-2 HAS BEEN CERTIFIED BY IAPMO R&T AGAINST NSF/ANSI 42 FOR
THE REDUCTION OF AESTHETIC CHLORINE TASTE AND ODOR AND NOMINAL
PARTICULATE CLASS I, AND NSF/ANSI 53 FOR CYSTS, LEAD, ATRAZINE AND
LINDANE.
Culligan International Company
9399 W. Higgins Rd., Suite 1100, Rosemont, IL 60018 USA
(847) 430-2800 www.culligandiy.com
pH: 7.5 ± 0.5
Temp: 50-77 ºF (10-25 ºC)
Influent
Challenge
Water
Concentration
2.0 mg/L ± 10%
at least 10,000
particles/mL
0.009 mg/L ± 10%
0.002 mg/L ± 10%
0.15 mg/L ± 10%
0.15 mg/L ± 10%
At least 50,000
mg/L
Max.
Permissible
Product
Requirements
50%
85%
0.003 mg/L
0.0002 mg/L
0.010 mg/L
0.010 mg/L
>99.95%
11
Actual Minimum
% Reduction
97.0%
98.4%
94.5%
98.9%
95.1%
96.9%
99.99%
Actual Average
% Reduction
97.4%
99.6%
94.5%
98.9%
98.2%
96.9%
99.99%