Turbidity testing Sample Clauses

Turbidity testing. Turbidity levels of water samples were measured using the Hach® 2100P Turbidimeter which was calibrated once at each study site with STABLCAL® Stabalized Formazin Standards. Water samples used to assess turbidity did not contain sodium thiosulfate. Turbidity measurement procedures were in accordance with the manufacturer‟s instructions. WhirlPak® bags were shaken before being placed in the turbidimeter.