Test |
Code |
Method/ Chemistry |
Standard/Equivalence or Description |
Comparator |
Cell |
Alkalinity |
D |
P/T |
1 drop = 10 ppm CaCO3 |
NA |
NA |
Chloride |
D |
Argentometric |
1 drop = 10 ppm Cl– |
NA |
NA |
Hardness-total |
D |
Total by: EDTA titration (includes inhibitors to prevent metal interference) |
1 drop = 10 ppm CaCO3 |
NA |
NA |
Molybdenum |
D |
Complexometric (uses powdered indicator for increased stability) |
1 drop = 2, 5, 20, or 50 ppm Mo |
NA |
NA |
Nitrite |
D |
Cerium oxidation of nitrite (“CAN”) |
1 drop = 40 ppm NaNO2 |
NA |
NA |
Phosphonate |
D |
Thorium nitrate/xylenol orange (uses pH test paper 1.8-3.8) |
1 drop = 1 ppm ATMP (Aminotri (methylenephosphonic acid)) plus conversion factors for ATMP-related phosphonates |
NA |
NA |
Silica |
M |
Heteropoly blue |
5, 10, 15, 20, 25, 30, 40, 50 ppm SiO2 By dilution: 25, 50, 75, 100, 125, 150, 200, 250 ppm SiO2 or 50, 100, 150, 200, 250, 300, 400, 500 ppm SiO2 |
9257 |
4025 |
Sulfite |
D |
Iodometric |
1 drop = 10 ppm Na2SO3 |
NA |
NA |
|