Chlorine Dioxide Test Kits

Visual Kit

Range	MDL	Method	Type	Kit Cat. No.	Refill Cat. No.
0.0 - 2 & 0 - 10 ppm	0.1 ppm	DPD	CHEMets	K-2705	R-2705

Instrumental Kits

Range	Method	Type	Kit Cat. No.
0 - 11.0 ppm	DPD	Vacu-vials	K-2703
0 - 11.0 ppm	DPD	SAM Photometer + Vacu-vials	I-2005

Note: Click on the ‘Kit Cat. No.’ to view the test instructions. Click on the ‘Range’ value for Vacu-vials to view accuracy chart.

CHEMetrics offers test kits employing the well-known DPD reagent to deliver sensitivity and accuracy within two minutes or less. Based on CHEMetrics patented Self-Filling Reagent Ampoule technology. Premixed. Premeasured. Precise. Each kit contains 30 tests.

The DPD Method

In the standard DPD methodology, chlorine dioxide reacts with DPD (N, N-diethyl-p-phenylenediamine) to form a pink product. Interference from free Cl₂ is prevented (up to 6 ppm Cl₂) by the addition of glycine to the sample. Results are expressed as ppm (mg/l) ClO₂.

References:
USEPA Methods for Chemical Analysis of Water and Wastes, Method 330.5 (1983).
APHA Standard Methods, 20^th ed., Method 4500- ClO₂ D -1993 and 22^nd Ed., Method 4500-Cl G- 2000.

Applications

Chlorine dioxide is used as an oxidising microbiocide in industrial cooling water treatment, the dairy industry, the meat industry, and many other food and beverage industry applications. It is used as a bleaching agent in the pulp and paper industry, and as a disinfectant in municipal water treatment. Industrial waste treatment facilities use chlorine dioxide because of its selectivity for certain compounds, including phenols, sulphides, cyanides, thiosulphates, and mercaptans. The oil and gas industry uses chlorine dioxide for downhole applications and as a stimulation enhancement additive. The Maximum Residual Disinfectant Level for chlorine dioxide in drinking water set out by the DWI is 0.5 mg/l.

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