eliminating the inaccuracies associated with mixing your own buffers

The glass sensing bulb becomes less sensitive over time

calibrate to 7

and total dissolved solids (TDS) with one meter and one probe

HM Digital SB-1500H Salt and Temperature Meter - Waterproof with Measuring Spoon meter calibration eliminating the inaccuracies associated withThis Newly released SB 1500H is ideal for measuring salt content in food, pools, salt water aquariums and many more. FEATURES: Salt meter with measuring spoon (percentage of salt) Ideal for pools, saltwater aquariums and good preparation Large LCD display horizontal angle for easy viewing Waterproof housing Automatic Temperature Compensation Product Description Range: 0. 01% to 10. 0% (0ppm to 100,000ppm with NaCl) Temp Range: 1 99 C (ATC Range)