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Reference Solutions

To work correctly, your testing equipment must be perfectly calibrated, kept clean and stored properly. These professional-quality reference solutions assure accurate testing results and long equipment life for your EC, TDS and pH meters.

  • HANNA Calibration Packets

    Calibration Packets

    Available in convenient 20 ml packets that are designed to keep solutions fresh.

    $1.50
  • Bluelab Calibration Solutions 1

    Calibration Solutions

    Testing equipment must be cleaned and calibrated regularly to ensure …

    $12.95 $10.95
  • Conductivity Probe Cleaning Kit 1

    Cleaning Kit – Conductivity Probe

    If the conductivity probe is contaminated or dirty, it will affect the accuracy …

    $24.50 $21.00
  • pH Probe Cleaning & Calibration Kit 1

    Cleaning Kit – pH Probe

    Probe cleaning is an important part of owning and operating any meter.

    $39.95 $34.50
  • Electrode Cleaning Solution (HI 7061) 1

    Cleaning Solution

    Easy to use, just immerse the electrode in the cleaning solution for about 5 minutes.

    $19.95 $17.95
  • pH 4.01 Calibration Solution

    pH 4.01 Meter Calibration

    Easy to use, just dip your meter electrode into a small amount of the buffer and …

    $6.95
  • pH 7.0 Calibration Solution

    pH 7.0 Meter Calibration

    Allows growers to calibrate many popular meter brands with confidence.

    $6.95
  • Genesis pH Calibration Kit 1

    pH Calibration Kit

    A two point calibration between 4.0 and 7.0 assures that your meter is accurate …

    $22.50 $17.50
  • PH Buffer Solution (HI 7007 & HI 7004) 1

    PH Solutions

    These quality pH buffer solutions are standardized against NIST reference …

    $18.95 $17.50
  • TDS Calibration Solution

    Standard Reference

    Easy to use, just dip your electrode into a small amount of the buffer and adjust.

    $21.50 $19.95
  • Electrode Storage Solution (HI 70300) 1

    Storage Solution

    To ensure fast response times and minimize clogging, always keep the glass …

    $19.95 $17.50
  • HANNA TDS Solution 1

    TDS Solutions

    Ensures maximum accuracy for HANNA conductivity meters and probes.

    $13.95 $12.95