Hanna Instruments Total Chlorine DPD Powder Reagent (300 Tests) (HI93711-03)

Hanna Instruments Total Chlorine DPD Powder Reagent (300 Tests)

The HI93711-03 is a pack of 300 pre-measured DPD powder reagent sachets for the colorimetric determination of total chlorine in pool, drinking, and process water. Each sachet produces a pink tint in the sample proportional to the total chlorine concentration, which is then read by a compatible Hanna Instruments photometer and displayed in mg/L. This is the high-volume 300-test pack, ideal for professionals and frequent testers who need a reliable, cost-effective supply.

Compatibility

These reagents are designed for use with Hanna Instruments compatible benchtop and portable photometers, including the HI711 Checker and a wide range of the Hanna Pool Line and laboratory photometers. They measure total chlorine across a range of 0.00 to 5.00 mg/L (ppm), making them suitable for pool maintenance, water treatment, and drinking water quality control.

Methodology

The HI93711-03 follows an adaptation of USEPA Method 330.5 and Standard Method 4500-Cl G. The DPD (N,N-diethyl-p-phenylenediamine) reaction between total chlorine and the reagent produces a pink coloration in the sample; the intensity of that colour is measured by the photometer to determine chlorine concentration accurately.

Why genuine matters

Each sachet is manufactured in Hanna Instruments’ own facility using high-purity chemicals and is clearly marked with an expiration date and lot number for full traceability. The pre-measured, single-use format eliminates dosing errors and ensures consistent, reproducible results test after test. Store in a cool, dry environment to maintain reagent integrity throughout the shelf life.