HI 705 Checker®HC Handheld Colorimeter – Silica Low Range The HI 705 Checker®HC is a simple, accurate, and cost effective way to measure low ranges of silica.  Designed as a more accurate alternative to chemical test kits, the HI 705 provides quick, accurate results in four easy steps.  1.) Step One – Add a sample to the included cuvette.  Add reagent “A” and ... Read More »