Check the listing for details. Coliform Test Powder Kit, 5 Tubes/PK - Innovating Science. Condition: New. Listed at 26.99 USD. Coliform Test Powder Kit, 5 Tubes/PK - Innovating Science EASY TO USE || Just add 3mL of your water sample to tube, wait 24 hours, and view color changeEASY TO INTERPRET RESULTS || Yellow color change indicates presence of coliform bacteria in sample; purple color change indicates no coliformsSAFE DISPOSAL || Add a splash of household bleach to the tube, shake for about 30 seconds, then pour contents down sink5 TESTS || Kit includes 5 plastic tubes prefilled with test powder, SDS, and instructionsMADE IN THE USA || The Curated Chemical Collection by Innovating Science is comprised of high quality chemicals manufactured in the United States Test water samples with ease using coliform testing powder. Results are qualitative and colorimetric. Just add 3mL of your water sample to our pre-filled tube, wait 24 hours, and observe through color change if there are coliforms detected in your sample. Purple results indicate a negative for coliforms, yellow results indicate coliforms detected. To dispose, just add a splash of household bleach to the tube, shake for about 30 seconds, and pour down sink or toilet. Product Details Brand Innovating Science Product Type MPN IS5056 Check out my other items.