Checklight develops, manufactures and delivers innovative early warning solutions for rapid detection of contamination in drinking water, through the use of sensitized luminescent bacteria. CheckLight technology has been verified by the US Environmental protection agency (EPA). Our technology is sourced worldwide. Checklight provides CCB-TOX for On-line toxicity tests and the following easy to use portable testing products. TOX-SPOT /TOX-SCREEN- A simple and easy-to-use onsite field and laboratory tests for toxicity screening. Early-AOC–A unique method for detecting potential bacterial re-growth & bio-fouling build-up within 2 hours. Early-BOD-Rapid (2 hour) monitoring of organic pollutants in wastewater.