Milwaukee MA9062 1382 ppm TDS Conductivity Solution - 230mL Bottle HANNA Instruments The MA991B/1's gel-filled reference eliminates Frontier Flow compatible HI99121 which will damage probe

The MA991B/1's gel-filled reference eliminates electrolyte refilling

HOLD button Freezes reading on the display to allow recording of measurement

Automatic Temperature Compensation (ATC) using three temperature coefficients

the FLM-3 emits an audible beep alert—reminding you it's time to replace your filters before water quality degrades

Milwaukee MA9062 1382 ppm TDS Conductivity Solution 230mL Bottle HANNA Instruments The MA991B 1's gel filled reference eliminates Frontier Flow compatible HI99121 which will damage probe The MA991B 1's gel filled reference eliminates electrolyte refilling HOLD button Freezes reading on the display to allow recording of measurement