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Bromine Test Kit – DPD Colorimetric Method

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Precision bromine concentration testing for water systems, swimming pools, and spas using DPD chemistry

DPD colorimetric analysis method for rapid bromine determination
Dual range visual test options (0-2.2 ppm & 0-11 ppm)
Instrumental analysis capability (0-12.0 ppm range)
MDL: 0.125 ppm for enhanced sensitivity
EPA Method 330.5 and APHA Standard Methods compliant
Suitable for water quality monitoring in pools, spas, and municipal systems

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Daha fazla detay

Professional bromine testing kit utilizing DPD (N,N-diethyl-p-phenylenediamine) colorimetric methodology. Bromine is employed as a disinfectant agent in potable water systems, swimming pools, and spa facilities. This kit provides rapid, accurate quantification of bromine residual levels through color-matching analysis. Potassium iodide is added to the sample prior to analysis, enabling bromine to liberate iodine from iodide, which subsequently reacts with DPD reagent to produce a pink coloration proportional to bromine concentration. Results are expressed as Br₂ in ppm (mg/L).

Technical Specifications

Visual Test Kit Range	0-2.2 ppm and 0-11 ppm
Instrumental Analysis Range	0-12.0 ppm
Method of Detection	DPD Colorimetric
Minimum Detection Level (MDL)	0.125 ppm
Visual Kit Catalog Number	K-1605
Visual Kit Refill Catalog Number	R-1605
Instrumental Kit Catalog Number	K-1613
Result Expression	Br₂ in ppm (mg/L)

Applications

Swimming pool disinfection monitoring
Spa and hot tub bromine residual verification
Potable water system disinfection control
Industrial water treatment bromine level assessment
Regulatory compliance testing for bromine residuals
Field and laboratory water quality analysis

Frequently Asked Questions

What is the DPD method for bromine testing?

DPD (N,N-diethyl-p-phenylenediamine) is a reagent that reacts with bromine to produce a distinctive pink coloration. Potassium iodide is first added to liberate iodine from bromine, which then reacts with DPD to generate measurable color intensity proportional to bromine concentration.

What is the difference between visual and instrumental kits?

Visual kits (K-1605) provide color-matching analysis suitable for field testing with ranges of 0-2.2 and 0-11 ppm. Instrumental kits (K-1613) offer laboratory-grade precision with an extended range of 0-12.0 ppm and are used with photometric analyzers.

What standards does this method comply with?

This method complies with USEPA Methods for Chemical Water Analysis and Waste (Method 330.5, 1983) and APHA Standard Methods, 21st edition, Method 4500-Cl G (2005).

Can these kits be refilled?

Yes, visual test kits (K-1605) can be replenished using catalog number R-1605 refill packets, ensuring cost-effective long-term use.