LaMotte 6903A Instrument Grade TesTabs for ColorQ – DPD No. 1, 100 Count

Overview

LaMotte 6903A Instrument Grade TesTabs are precision DPD #1 tablets designed for use with ColorQ test kits and other instrument-grade readers. When added to a sample, these color-developing tablets help reveal chlorine species through a distinct color change, enabling easier interpretation by colorimeters and spectrophotometers.

These tablets are specifically labeled “Instrument Grade,” signaling their suitability for higher-precision instruments. They fit well in controlled testing environments such as laboratories, classrooms, or professional water-testing workflows where accurate color readings matter. In typical testing, a 10 mL sample yields a readable range from 0 to 10 ppm of free chlorine, providing a practical window for routine checks without guesswork.

What you get and why it matters

• 100 tablets per bottle for ongoing testing without frequent replacements
• DPD indicator chemistry (diethyl-p-phenylenediamine) that differentiates chlorine forms in the sample
• Long shelf life of roughly three years when stored properly

• Designed for ColorQ colorimeters and other instrument-grade readers for consistent results
• Useful for measuring free chlorine levels in water samples, with a clear readout on compatible devices

Practical usage tips

For best results, follow your ColorQ kit protocol. Add one TesTab per sample, mix, and read the resulting color against the instrument’s calibration. Store in a cool, dry place away from moisture and heat to preserve potency.

Notes on scope and compatibility

These tablets measure free available chlorine and fit within the standard 0–10 ppm range typical for many water testing scenarios. They are a component of a broader testing workflow and should be used in accordance with your instrument’s instructions for accuracy and reliability.