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HM Digital Meters

       

   

(COM-100) (TDS-EZ) (TDS-3) (TDS-4)

      

     (AP-1)   (pH-200)   (COM-300)  (ORP-200)

         (DM-1)                           (DM-2)

       

    (QC1)                             (PSC-150)

HM Digital water quality testing instruments are superior in construction and performance,
yet made available at a very economic cost. HM Digital, Inc. is the only manufacturer of economical
in-line dual TDS meters that measure total dissolved solids (TDS) levels of feed and product water lines
simultaneously, an effective way to compare rejection rates and gauge reverse osmosis membrane,
water filter and water purification performance.

Hand Held TDS Meters

Part #Description1+10+25+50+
COM-100EC/TDS/TEMP WATERPROOF METER$56.03$53.12$50.21$46.57
TDS-3TDS & TEMP METER W/CASE; 0-9990ppm$9.82$9.31$8.80$8.16
TDS-4POCKET SIZE TDS METER; 0-9990ppm w/ATC$14.09$13.36$12.63$11.71
TDS-EZECONOMY TDS METER; 0-9990 PPM$12.49$11.85$11.20$10.39
AP-1AQUAPRO TDS METER 0-5000 PPM$18.79$17.81$16.83$15.61

Hand Held pH Meter

Part #Description1+10+25+50+
PH-200WATERPROOF PH METER$73.62$69.80$65.98$61.20
COM-300PH/EC/TDS/TEMP WATERPROOF METER$113.12$107.24$101.37$94.02

Hand Held ORP Meter

Part #Description1+10+25+50+
ORP-200HAND HELD WTR/PRF ORP METER$83.21$78.89$74.57$69.16

Continuous Monitors

Part #Description1+5+25+50+
DM-2INLINE DUAL TDS METER COMMERCIAL$38.90$36.88$34.86$32.33
Part #Description1+10+25+50+
QC1QUICK CHECK TDS/COND MONITOR$20.49$19.42$18.36$17.03
DM-1IN-LINE DUAL TDS METER; 1/4″ JG$28.26$26.79$25.32$23.49
DM-1AIN-LINE DUAL TDS METER; 3/8″ JG$24.95$23.66$22.36$20.74
Part #Description1+5+10+25+
PSC-150EXTENDED RANGE TDS/EC CONTROLLER$169.01$160.23$151.45$140.48
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