4x20ml, Storage + pH 4 + 7 + 10 Buffer Calibration/Solution/Fluid/Probe/Tester water quality pen 2% volume and ±0

2% volume and ±0

Optimized formulation: Concentrated potassium chloride solution designed specifically for polarographic DO sensors

ZeroWater's TDS meters are shipped with every 5-stage water filter pitcher so you can test the quality of your water and check the TDS levels in your area

Industrial 1/2" NPT threaded sensor for permanent installation

How to Install

4x20ml, Storage + pH 4 + 7 + 10 Buffer Calibration/Solution/Fluid/Probe/Tester water quality pen 2% volume and ±0Design Features Sachet packaging means that you get fresh solution every time Each sachet sealed against light and air Ideal for infrequent or field use Simply open the sachet, insert the tester or electrode and gently stir pH buffers certified to 0. 01 pH accuracy Each sachet contains 20 mL of solution Included 1 x pH 4. 01 calibration buffer solution sachets (20 mL) 1 x pH 7. 01 calibration buffer solution sachets (20 mL) 1 x pH 10. 01 calibration