+3 Chlorine Dioxide CLO2 Test Strip SKU BE4EVX3 $17.16 In stock Quantity: 1 Add to Bag Product Details Insta-TEST® Chlorine Dioxide “CLO2” is a convenient way to test for Chlorine Dioxide levels in sanitized water. Range and sensitivity is 0, 10, 25, 50, 100, 250, 500 ppm. Save this product for later Favorite