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Showing 145–156 of 177 results

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  HM Digital Pro Series COM-300 Pen Style pH/TDS/Temp Meter

  $159.95
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  HM Digital HM-100 Continuous pH/EC/TDS/Temp Monitor

  $299.99
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  HM Digital Hydromaster HM-200 Portable pH/TDS/EC/Temp Meter

  $274.95
• 

  HM Digital Hydromaster HM-500 Continuous pH/TDS/EC/Temp

  $359.95
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  HM Digital Replacement pH/Temp Sensor for PH-200

  $44.95
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  HM Digital Replacement TDS/EC Sensor for COM-100

  $34.95
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  HM Digital Replacement pH/EC/TDS/Temp Sensor for COM-300

  $62.95
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  Replacement EC/TDS Sensor for HM-100 and HM-200

  $49.95
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  Replacement EC/TDS Sensor for HM-500

  $49.95
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  HM Digital Replacement pH Sensor for HM-500 and HM-200

  $54.95
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  HM Digital pH 4.0 buffer solution – 20 packets of 20 ml

  $24.95
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  HM Digital pH 7.0 Buffer Solution – 20 packets of 20ml

  $24.95