Quick view FCI TDS Meter, Pen Type-5000 Scale, Water Resistant, Magnetic 50-0266 $55.00 Add to Cart Compare
Quick view FCI TDS Meter, Pen Type-5000 Scale, Water Resistant, Magnetic 50-0266 How Pure is Your Water? A TDS meter (aka PPM Pen, Nutrient Tester, RDS Stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. $55.00 Add to Cart Compare
