Industrial Test Systems WaterWorks 481109 Nitrate/Nitrite Nitrogen Test Strip, 1 Minutes Test Time, 0-50 ppm Range (Pack of 30)

item arrive in time, was exactly has advertised, very happy experience i will recommend to anyone that like to work on the garden

This product does test for everything it says it does and it did , one thing was I found that the accuracy of the color chart was off on some of the test such as hydrate oxide that was the only one that I could not get an accurate reading

Use the strips for a grand child's science fair project.

Like a lot of people on independent wells we have to keep strict track of the quality of our well water coming into our home. These test strips are an important part of that tracking system. These test strips are used to send numbers to to the state at various times and to insure ourselves what we and the little ones in the house are getting quality water. These were very good in the past but not so with this last box. It arrived on time but the box expiration date was really getting close, in fact it was the same as the prior box we had. The box also had many sealed packages that didn't have any testing strips in them! I don't know if it was just a fluke or if the quality has really gone down.

Perfect for my teenagers science fair project. Easy to use.

They work great and are accurate

Great!!! Super easy to use! Would definitely recommend!

Works as described.

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