Industrial Test Systems 481020 SenSafe Manganese Test

We had our water tested professionally at a lab and we have .389 ppm of iron and .4 ppm of manganese in out well water and these manganese strips indicated .4ppm, so they are accurate, even with iron in the water. Some other reviews indicated that they wouldn't work with iron in the water interfering with the manganese test, but they recently fixed that problem with the iron interference.

Works well to measure the Manganese level in our drinking water

All test "orange" meaning manganese. Useless for accurate testing

This kit is essentially a useless test for manganese alone. I use a greensand filter to filter out a high iron content in my well water and wanted to know if I had a manganese problem too. But this test will yield false positive results if there are other metallic ions present like copper, iron and others in the water. Yes, IRON! Now I found out the hard way why the product description states in a cryptic manner, "Inferences from other metals." So this test is not manganese specific but will give a positive result for an assortment of other metals and would be more correctly labeled, not as a manganese test, but a metal test. So I ran the test anyway on untreated water and it comes out at the maximum concentration of 2.0 PPM. Then I run the test on treated water (greensand filtering is supposed to remove both iron and manganese) and what are the results? 2.0 PPM! What have I learned about my water and my filter for $28.59? NOTHING!

I recently installed a well water treatment system and bought this for ongoing monitoring. The results compare well with laboratory test results done initially. The testing procedure is a bit tedious, but works well when you do it right. Follow the directions carefully. You need to be good at discerning slight color differences to read the test results accurately.