The HI93755-53 is a chlorine remover reagent used to remove chlorine interference when performing a colorimetric determination for freshwater alkalinity with the HI775 Freshwater Alkalinity Colorimeter – Checker® HC. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each bottle for traceability. Pre-made reagent for ease of use Prepared with high purity chemicals Marked with expiration date and lot number for traceability