Hardness (ULR) Reagent Set, Solution Pillows

Hardness (ULR) Reagent Set, Solution Pillows
Product #: 2603100-CA
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How the Chlorophosphonazo Method Works

Calcium and magnesium ions react with the Chlorophosphonazo indicator to form a colored complex that strongly absorbs light at 669 nm. The addition of CDTA reagent disrupts this complex, and the decrease in color intensity is proportional to total hardness concentration as CaCO₃.
This method provides a highly sensitive alternative to:

• EDTA titration
• AA (Atomic Absorption)
• ICP instrumentation
for ultra-low hardness analysis.

Specifications

Instrument: All except DR 900, DR/800 Series, PC II
Method Name: Chlorophosphonazo
Method Number: 8374
Number of tests: 250 tests
Parameter: Hardness
Platform : Solution
Range: 8 - 1000 µg/L CaCO₃
Range 2: 8 - 1000 µg/L CaCO₃ (part number 2410222)
Special Feature: ULR Reagent set, Poly Pillows
Wavelength: 669 nm