A TDS meter is a handy tool for anyone using a reverse osmosis&nbps; (RO) system. It&nbps; measures the total&nbps; dissolved solids in water,&nbps; which&nbps; helps you understand&nbps; how clean&nbps; your&nbps; water is. This is&nbps; important because clean&nbps; water is essential for drinking, cooking, and even for your plants. If you have an&nbps; RO&nbps; system, you want to make sure&nbps; it is working&nbps; properly. A TDS meter&nbps; from JIDE can&nbps; help you check the quality of your water&nbps; easily and quickly. Using a TDS meter is simple. You dip it into a glass of water, and it&nbps; will give you a reading in parts per&nbps; million (PPM). A lower&nbps; number means better water quality.