DPD Free Chlorine Reagent, Swiftest™ Dispenser Refill Vial, Approximately 250 Tests

About this item ACCURATE CHLORINE MEASUREMENT – Measures free chlorine levels from 0.02–2.00 mg/L, ideal for compliance with water quality standards. COMPATIBLE WITH SWIFTEST DISPENSER – Designed for use with Hach Swiftest DPD Dispenser, ensuring fast and precise reagent delivery. EPA APPROVED TEST METHOD – Accepted under Hach Method 8021 for reliable drinking water analysis and regulatory reporting. CONVENIENT AND EFFICIENT – Squeeze-to-dispense design eliminates the need for opening reagent containers and reduces packaging waste. PERFORMS 250 TESTS PER VIAL – High-capacity refill vial supports high-volume testing for both field and laboratory applications.