Review on 🧪 Convenient Essential 2210 Plastic Hydrion Dispenser for Hassle-free Testing by Rob Rogers

lucky plants like 5.5-6.5, so a good double check with digital counter. Don't forget to calibrate your digital meters regularly and almost kill your plants by turning off the meter. If stored in a cool, dry, dark place, this roll should last you a while. If you're color blind to red-green, they won't work for you. If you have a hard time seeing subtle color differences, this won't work for you. Hydrion is the best pH paper manufacturer, their products are consistently good every time. With clean, dry hands, spread out the paper and read it immediately after contact with the solution. Placing paper on a towel or porous surface will transfer the color onto it, so be careful not to place used paper on anything important to you. Does not give exact pH values (not intended), good for testing a solution that is already known to be in a certain pH range, more specific than the 1 to 14 range of Hydrion paper .