Industry leading instant test with lot number and expiry date stamped on the roll for full food safety standards compliance Perfect for testing chlorine / bleach sanitizers and avoiding hefty board of health fines! Our paper is almost 2x wider than our competitors paper making for easier handling Tests in a range of 10-200 ppm (10 50 100 and 200 ppm markings) These are NOT for pool OR tap water tests. They ARE designed specifically for restaurants testing their chlorine sanitizers in 3 part sinks These are the ideal Chlorine test strips for food service in a handy roll format - enabling you to only use as much paper as you need and saving you money on compliance costs.This Chlorine Test Paper provides a simple reliable and economical means to measure the concentration of free available chlorine in sanitizing solutions. The Chlorine Test Paper measures total available chlorine from 10-200ppm and gives results in just seconds. Our chlorine test paper is most often used to test the strength of solutions used to sanitize surfaces for example in the restaurant industry. In these types of applications bleach is usually used to generate the available chlorine. With color matches at 10 25 50 100 200 ppm (parts per million) the test paper measures concentrations between 0 to 200ppm detecting exhaustion of solutions that should be replaced as well as helping to avoid using excessive amounts of sanitizing agents. Chlorine Test Paper is used to detect the strength of available chlorine in sanitizing solutions.. Federal State and Local health regulations require users of chlorine based sanitizer solutions to have appropriate test kits available to verify the strength of sanitizer solutions. Use of this strip is simple and has the instructions printed directly on the roll in English and Spanish. To use it all you need to do is:1. Dip into the solution2. Remove immediatelyCompare it to the color chart printed on the roll. It really is that simple!NOTE: The test strips should be kept in closed vials when not used out of direct sunlight at room temperature.IMPORTANT NOTE: This strip was designed specifically for restaurants to test chlorine sanitizers in three part sinks. It will work for testing anything in the range of 10 to 200 PPM. IT WILL NOT work for testing tap water pool water undiluted bleach or anything that uses Quaternary Ammonia as the active ingredient.