Potassium Iodide-Starch Test Paper

Potassium Iodide/Starch paper turns blue to deep purple in the presence of low levels of chlorine, iodine, peroxide, and ozone. 100 strips per vial. Key Features: 100 strips per vial Package Dimensions: 4.0 H x 4.0 L x 4.0 W (in inches) Country of Origin: Canada Turns blue in presence of free iodine Country of Origin: USA Manufacturer/Importer/Packed By: Fisher Scientific