iSpring TDS 3-Button Digital Water Quality Test Meter with Temperature Test Function Pocket Size auspowers_batchfour Digital Number: 4 Bit 7

Digital Number: 4 Bit 7 Segment

10 Different Size Studs And Extra Spacers Included For A Perfect Fit

Read more The upgraded version 2

Type C Cable [3-Pack

iSpring TDS 3-Button Digital Water Quality Test Meter with Temperature Test Function Pocket Size auspowers_batchfour Digital Number: 4 Bit 7iSpring TDS 3 Button Digital Water Quality Test Meter with Temperature Test Function A TDS meter (aka ppm pen, nutrient tester, TDS stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS stands for Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS meter tells you your overall water purity level, which will be displayed on the screen in ppm