HM Digital Brand

HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy $35.00 B0002T6L5M
HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy $37.00 B000VTQM70
HM Digital DM-1 In-Line Dual TDS Monitor, 0-9990 ppm Range, +/- 2% Readout Accuracy ★★★★☆ 1508 $26.46 B001EHAZGW
HM Digital 1000ppm TDS Calibration Solution $13.99 B001FD6WZ8
HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume $12.95 B001VE99X8
HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy ★★★★☆ 5331 $16.68 B002C0A7ZY
HM Digital HMDCOM100 Waterproof EC/TDS and Amp Temperature Combo Meter, 2.1" x 2.9" x 8.9", White/Purple $57.57 B0045LQFTK
HM Digital ORP-STOR ORP Electrode Storage Solution for Use with ORP-200, 60cc Volume $9.81 B004GFQ7VG
HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy (Magnetic Body) $22.93 B007KDYOMU
HM Digital PH-STOR pH Electrode Storage Solution for Use with PH-200 or PH-80, 60cc Volume $10.97 B00AWFI4B0
HM Digital DM-1 In-Line Dual TDS Monitor, 0-9990 ppm Range, +/- 2% Readout Accuracy by HM Digital 0 $42.47 B013S2A67S
HM Digital TRM-1, 3x 1/4"Tee, Triple Inline TDS PPM Monitor/Meter $39.00 B019VIVVVS
HM Digital DM-1B, 2x 1/2" Tee, Inline Dual TDS PPM Monitor $46.98 B019VK2WU0