The unique PopTop vial comes with a molded desiccant sleeve insert. This eliminates the need for a desiccant pillow and provides more protection for test strips from moisture intrusion. Do not remove the sleeve. A properly closed vial is 100% leakproof and airtight. Keep wet fingers out of the bottle. Strips pads will react if they get wet, so shake out a strip and pick it up with dry fingers.
Close vial tightly after removing pool test strip. To keep moisture out of the bottle, press down the center of the cap to seal it quickly after removing a strip.
Immerse strip to a depth of 12"-18". In pools, this assures a representative sample of the pool water and not just the surface where evaporation takes place. In spas, swirl with the jets off.
Read in natural daylight. Sodium vapor lightbulbs can make color-matching difficult.
Store in a cool, dry place. Indoors is best, since extreme heat and moisture could reduce the shelf life of the strips.