RO Systems

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  HM Digital C342 TDS and EC Calibration Solution – 342 ppm NaCl 3oz/89mL

  $9.00 Original price was: $9.00.$2.70Current price is: $2.70.
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  HM Digital CIC-152 Dual Control Dosing/Injection TDS/EC Controller

  $301.23 Original price was: $301.23.$60.25Current price is: $60.25.
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  HM Digital COM-100 Professional Waterproof TDS Meter & Thermometer

  $56.95 Original price was: $56.95.$17.09Current price is: $17.09.
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  HM Digital COM-80 EC/TDS Combo Meter

  $25.76 Original price was: $25.76.$7.73Current price is: $7.73.
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  HM Digital DM-1 Dual TDS Meter

  $34.91 Original price was: $34.91.$10.47Current price is: $10.47.
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  HM Digital Handheld TDS Meter & Thermometer

  $22.20 Original price was: $22.20.$6.66Current price is: $6.66.
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  HM Digital HydroMaster Continuous pH/EC/TDs/Temperature Monitor

  $226.26 Original price was: $226.26.$56.56Current price is: $56.56.
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  HM Digital LDM-100R Commercial Grade Dual Line EC/TDS Monitor

  $87.52 Original price was: $87.52.$26.26Current price is: $26.26.
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  HM Digital LSM-100 Commercial Inline EC/TDS Monitor

  $76.83 Original price was: $76.83.$23.05Current price is: $23.05.
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  HM Digital PM-2 External Inline TDS Purity Monitor

  $49.54 Original price was: $49.54.$14.86Current price is: $14.86.
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  HM Digital PM-2-NF External Inline TDS Purity Monitor with Transformer

  $47.98 Original price was: $47.98.$14.39Current price is: $14.39.
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  HM Digital PSC-154 Extended Range EC/TDS Controller with 4-20mA Output

  $206.42 Original price was: $206.42.$51.60Current price is: $51.60.