Sms410 TDS MONITOR – RANGE: 0 –1990 ppm WITH ACCURACY OF ±2% FULL SCALE AND WITH 1 POINT MANUAL CALIBRATION AND AUTOMATIC TEMPERATURE COMPENSATION. SET POINT RANGE 700 TO 1800 ppm, AND LED VISUAL ALARM ACTIVE WHEN READING IS LOWER THAN SET POINT. SUPPLIED WITH 12 V DC POWER ADAPTER, MA812/2 CONDUCTIVITY PROBE AND 20 ml. 1382 ppm SACHET BUFFER SOLUTION AND SCREWDRIVER FOR CALIBRATION.

Monitor your tds in your water with the Milwaukee sms410.  Great for aquariums.