Review on Litmus Strips Plastic Dropper， Aquarium by Abdullah Huan

There are many strips in each box and they appear to be working properly. I have no way of determining if they are correct. However, my water should be slightly alkaline, and analysis of regular tap water shows that it is slightly alkaline. I tested distilled water and it reflects neutral 7. So with this small test possibility everything works fine. Each strip can be torn from its packaging, used and discarded. I have found that I can even cut the strips into 3 smaller pieces for my purposes so that the product always lasts longer. I use a PH test product for my hydroponic solution.