Scigiene hard water test strips measure scale forming calcium carbonate from 0-500ppm (0-30 grains/gallon) fast and accurately. Excessive scale buildup can clog pipes, ruin your dishwashers & hot water tanks, interfere with hospital dialysis machines or compromise food production.

Features & Specifications:

• 50 strips per vial
• Shelf life is 3 years but if bag is properly sealed, they should be good for a minimum of 5 years
• Strips will degrade if exposed to sunlight. They come in a dark bag to prevent degrading. Do NOT transfer to a clear bag or strips will degrade quickly.