Review on 🧪 Hardness Test Kit for Freshwater by Dawn Campos

I bought this as an inexpensive way to test my home brewed water so all I needed was a set of drops for GH and KH testing. The included instructions included a chart that converted the number of drops (no color chart required) to a meaningful scale for aquarium use; since I've used it "off-label" I can't comment on how useful it is. It should be noted that the vials provided are easy to break, I accidentally broke one by squeezing too hard when trying to remove the cap (fortunately it didn't cut me).