If you are looking for professional and useful water quality test strip for drinking water, then your research is over here. That's because our product can meet your need. Adopted of high grade material, it is practical and durable for long time use. Features -Color:Assorted Color -Material:Paper, plastic -Size:12.00X0.50X0.50cm/4.72X0.20X0.20in -Size:10.50X1.00X1.00cm/4.13X0.39X0.39in -Test items: PH, total alkalinity, free , total , nitrate, nitrite, , lead, iron, copper, fluoride, , chromium/ , hardness, carbonate root, cyanuric acid - Easy to operate and test, just need to simply dip water and compare with chart designed on bottle. - With large quantities, which can easily meet your different using and replacement needs. - These test strips for drinking water are professional, which are designed for testing the water quality in home and running water. - Get your testing results quickly and easily, simple and useful for your, bring much convenience to you. - High-grade material and fine craftsmanship, durable and sturdy, safe and reliable for a long time. Package list: drinking water test strips 1 tube 1 x dropper