Hach DR2400 - Page 279

Cyanuric Acid
Cyanuric Acid
CyanuricAcid_PP_Other_TUR_Eng_Ody.fm Page 3 of 4
Method Performance
Precision
Standard: 10 mg/L cyanuric acid
See Section 3.4.3 Precision on page 44 for more information, or if the standard
concentration did not fall within the specified range.
Sensitivity
See Section 3.4.5 Sensitivity on page 44 for more information.
Summary of Method
The test for Cyanuric Acid uses the turbidimetric method. Cyanuric Acid 2
Reagent precipitates any Cyanuric Acid present and holds it in suspension. The
amount of turbidity caused by the suspended particles is directly proportional to
the amount of cyanuric acid present. Test results are measured at 480 nm.
Required Reagents
Quantity Required
Description Per Test Unit Cat. No.
Cyanuric Acid 2 Reagent Powder Pillow..............................................1 pillow........... 50/pkg.................2460-66
Required Apparatus
Sample Cells, 10-20-25 mL, w/cap.........................................................2....................... 6/pkg.................24019-06
Required Standards
Cyanuric Acid ..................................................................................................................... 25 g.......................7129-24
Water, deionized ................................................................................................................. 4 L ..........................272-56
Program 95% Confidence Limits of Distribution
170 7–13 mg/L cyanuric acid
Portion of Curve ∆Abs ∆Concentration
10 mg/L 0.010 0.3 mg/L cyanuric acid
30 mg/L 0.010 0.3 mg/L cyanuric acid
50 mg/L 0.010 0.4 mg/L cyanuric acid