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Showing 97–108 of 142 results

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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
• 

  HM Digital Replacement pH/Temp Sensor for PH-200

  $44.95
• 

  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
• 

  Horizon Lift Automated Light Mover

  Starting at $795.00
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  Replacement EC/TDS Sensor for HM-500

  $49.95
• 

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

  $54.95
• 

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

  $24.95
• 

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

  $24.95
• 

  HM Digital pH Electrode Storage Solution – 20 packets of 20ml

  $24.95