THE ORGINAL DIY BACTERIA TEST KIT that is certified accurate by Good Housekeeping Labs, American Red Cross, Underwriter Labs, and Merck Labs. Designed and developed by our EPA certified scientists. Made in the USA. PATENTED TECHNOLOGY: Detects 50 different species of coliform bacteria (including E. coli), as low as 1-organism. Test any freshwater supply. 3RD PARTY STERILIZATION: Every Safe Home kit is sterilized by a certified facility (see attached certificate) and guaranteed to be “free from bacteria” before you test. This process assures zero “false positive results” from product contamination, as may be experienced with other kits who skip this sterilization process. FAST RESULTS- Get results as quickly as 6 hours. May take up to 72 hours based on incubation conditions, and concentrations of bacteria in the water being tested. YOUR PURCHASE MAKES A DIFFERENCE in people’s lives. Safe Home donates a portion of every test kit sale to clean water initiatives around the globe. See attached images with this listing, to learn more. IMPROVED TIME FOR POSITIVE TEST RESULTS: Recent validation studies confirm that Safe Home’s DIY Bacteria in Water Test Kit can produce positive test results as fast as 6-hours. Our new packaging that shows “6-hours” is now arriving at Amazon and being sold alongside our existing 24-hour packs. Whether your kit says 6-hours or 24-hours, both kits meet the “results as fast as 6-hours” performance capabilities. The Safe Home DIY Bacteria in Water Test Kit has been acclaimed as the “BEST DIY BACTERIA TEST KIT” by the Good Housekeeping Institute and Popular Mechanics. It also was recognized as one of the Top-10 New Products at the National Hardware Show and earned the prestigious Good Housekeeping Seal This test serves as a “Presence” or “Absence” test for Coliform Bacteria. It will detect over 50 different species of Coliform Bacteria including e. Coli. Detecting down to 1 organism so you can trust your results. We understand that when you are concerned about bacteria in your drinking water, you need results fast. Our test can show Presence for bacteria as fast as 6 hours, and never more than 72 hours.