Review on 🧪 Hardness Test Kit for Freshwater by Regina Smith

Forget the users who can't count drops. It doesn't matter and you don't have to do one drop at a time; After the first test you will know what range you are looking for. for example. Let's say your Ghd tested 10 earlier. You can add seven or eight drops first, and then add one by one to find the current measurement. I cannot confirm the accuracy as I did not send my water to a lab for testing. But it's a lot grainier than test strips.