You can use our dilution calculator to correctly calculate the amount of bleach & water needed to prepare the ppm levels indicated above. This calculator will allow for any concentration of chlorine bleach to be used to prepare a sanitizing/disinfecting solution.
In the case of cruise ships, food borne illnesses could spread rapidly because of the relatively crowded conditions and overwhelm on board health care facilities. These high level, 1000ppm (0.1%) chlorine test strips will determine in seconds whether your chlorine bleach solutions are at the higher strengths required.
Simply dip a strip into the bleach solution, ensuring that the small indicator pad is fully immersed for a few moments. Withdraw the strip and compare to the color chart on the pack for immediate, accurate readings.
Note(1): If vial is properly stoppered, strips have a 2 year shelf life.
Note(2): These strips measure free (available) chlorine
Note(3): The number of strips per pack or vial is approximate.