16 in 1 Water Test Strips Professional Hardness Testing Kits, Tap and Well Water Test Strips with Hardness PH Mercury Lead Iron Copper Chlorine Nitrate Chromium Cyanuric Acid and More, (100 PCS)
- ...ut direction. Third: Compare with the color chart. No need to send specimens, no need to go to the lab, you can do it yourself..
- 【Wide Range of Applications】: The test strips are suitable for testing drinking water, household taps, well water, tap water, swimming pools, hot tub spas, aquariums, ponds, aquariums, industrial wastewater, etc. You can also check whether your water reducing agent works..
- 【Outstanding Customer Service】: Ensuring that you get the correct water test results is our number one goal. If you have any questions, please contact us and our team will do their best to keep you satisfied..