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Meters & Calibration Solutions

Whether you need to make precise adjustments to your pH levels, stay within a given temperature range, or control the EC inside of your environment, we've got your back!

Fran's Hydroponics sells meters, probes, measuring tools and calibration solutions of all kinds. We stand behind these products - we're an Australian hydroponics retailer that takes customer satisfaction seriously.

Hydroponic Meters and Calibration Solutions
  • PH Down - Hy-Gen PH Down (Phosphoric Acid)
    Original price $12.95 - Original price $29.95
    Original price
    $12.95 - $29.95
    $12.95 - $29.95
    Current price $12.95

    Hy-Gen pH Down (Phosphoric Acid) - pick up in-store only

    pick up in-store only

    Original price $12.95 - Original price $29.95
    Original price
    $12.95 - $29.95
    $12.95 - $29.95
    Current price $12.95
  • Original price $285.00 - Original price $285.00
    Original price
    $285.00
    $285.00 - $285.00
    Current price $285.00

    Bluelab PH & Conductivity Starter Pack

    BLUELAB PH & CONDUCTIVITY STARTER PACK The ultimate solution for measuring pH, conductivity and temperature on the go Your toolbox contains: B...

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    Original price $285.00 - Original price $285.00
    Original price
    $285.00
    $285.00 - $285.00
    Current price $285.00
  • PH Meters - Bluelab PH Pen
    Original price $149.95 - Original price $149.95
    Original price
    $149.95
    $149.95 - $149.95
    Current price $149.95

    Bluelab pH Pen

    Key Features• Measures pH and temperature• Selectable units for temperature• Backlit LCD display• Double junction probe (not replaceable)• Succes...

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    Original price $149.95 - Original price $149.95
    Original price
    $149.95
    $149.95 - $149.95
    Current price $149.95
  • Conductivity Meters - Bluelab Truncheon EC CF
    Original price $169.95 - Original price $169.95
    Original price
    $169.95
    $169.95 - $169.95
    Current price $169.95

    Bluelab Truncheon EC CF

    The World’s favourite conductivity meter. Simply brilliant, brilliantly simple! It is essential when growing with a hydroponic solution to KNOW w...

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    Original price $169.95 - Original price $169.95
    Original price
    $169.95
    $169.95 - $169.95
    Current price $169.95
  • Calibration Solution - Bluelab PH Probe KCI Storage Solution - 100 Ml
    Original price $24.95 - Original price $44.95
    Original price
    $24.95 - $44.95
    $24.95 - $44.95
    Current price $24.95

    Bluelab pH Probe KCI Storage Solution

    Improve longevity with KCl How to care for your Bluelab pH products Your pH probe is a sensitive glass instrument that ages through everyday use. I...

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    Original price $24.95 - Original price $44.95
    Original price
    $24.95 - $44.95
    $24.95 - $44.95
    Current price $24.95
  • PH Meters - HM Handheld PH Meter PH-80
    Original price $110.00 - Original price $110.00
    Original price
    $110.00
    $110.00 - $110.00
    Current price $110.00

    HM Handheld pH Meter PH-80

    PH-80   PH-80: pH HydroTester Series The PH-80 has proven to be the MOST reliable pH meter in its price range. It has become a favorite in such a...

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    Original price $110.00 - Original price $110.00
    Original price
    $110.00
    $110.00 - $110.00
    Current price $110.00
  • Calibration Solution - Bluelab Probe Care Kits
    Original price $34.95 - Original price $49.95
    Original price
    $34.95
    $34.95 - $49.95
    Current price $34.95

    Bluelab Probe Care Kits

    Care, hydration and calibration – in one kit Maintaining your Bluelab pH and conductivity probes To ensure ongoing accuracy and longevity, we r...

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    Original price $34.95 - Original price $49.95
    Original price
    $34.95
    $34.95 - $49.95
    Current price $34.95
  • Conductivity Meters - Bluelab Conductivity Pen (EC Or Ppm)
    Original price $139.95 - Original price $139.95
    Original price
    $139.95
    $139.95 - $139.95
    Current price $139.95

    Bluelab Conductivity Pen (EC or ppm)

    The ultimate handy solution for measuring conductivity (EC or ppm) and temperature! The Bluelab Conductivity Pen simply tells you that your pl...

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    Original price $139.95 - Original price $139.95
    Original price
    $139.95
    $139.95 - $139.95
    Current price $139.95
  • PH Up - Hy-Gen PH Up (Potassium Hydroxide
    Original price $12.95 - Original price $29.95
    Original price
    $12.95 - $29.95
    $12.95 - $29.95
    Current price $12.95

    Hy-Gen pH Up (Potassium Hydroxide - pick up in-store only

    pick up in-store only

    Original price $12.95 - Original price $29.95
    Original price
    $12.95 - $29.95
    $12.95 - $29.95
    Current price $12.95
  • PH Test Kit - Hy-Gen Complete PH Test Kit (pick Up Only)
    Original price $29.95 - Original price $29.95
    Original price
    $29.95
    $29.95 - $29.95
    Current price $29.95

    Hy-Gen Complete PH Test Kit - pick up in-store only

    HY-GEN COMPLETE pH KIT HY-GEN® COMPLETE pH KIT is an easy and accurate way to keep track of the nutrient solution pH with the added ability to adju...

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    Original price $29.95 - Original price $29.95
    Original price
    $29.95
    $29.95 - $29.95
    Current price $29.95
  • Calibration Solution - BlueLab PH 7.0 Calibration Solution
    Original price $22.95 - Original price $39.95
    Original price
    $22.95 - $39.95
    $22.95 - $39.95
    Current price $22.95

    BlueLab PH 7.0 Calibration Solution

    pH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate reading. pH measuring equipment is calibrated ...

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    Original price $22.95 - Original price $39.95
    Original price
    $22.95 - $39.95
    $22.95 - $39.95
    Current price $22.95
  • Calibration Solution - BlueLab PH 4.0 Calibration Solution
    Original price $22.95 - Original price $39.95
    Original price
    $22.95 - $39.95
    $22.95 - $39.95
    Current price $22.95

    BlueLab PH 4.0 Calibration Solution

    pH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate reading. pH measuring equipment is calibrated ...

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    Original price $22.95 - Original price $39.95
    Original price
    $22.95 - $39.95
    $22.95 - $39.95
    Current price $22.95
  • Calibration Solution - Bluelab Conductivity Standard Solution - 250ML | 2.77 EC
    Original price $22.95 - Original price $22.95
    Original price
    $22.95
    $22.95 - $22.95
    Current price $22.95

    Bluelab Conductivity Standard Solution - 250ML | 2.77 EC

    Boost accuracy with regular cleaning  How to care for your Bluelab EC products If you want to ensure the ongoing accuracy of your Bluelab conductiv...

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    Original price $22.95 - Original price $22.95
    Original price
    $22.95
    $22.95 - $22.95
    Current price $22.95
  • PH Test Kit - Hy-Gen PH Liquid Dropper Test Kit 4.5 To 7.5 PH
    Original price $12.95 - Original price $12.95
    Original price
    $12.95
    $12.95 - $12.95
    Current price $12.95

    Hy-Gen pH Liquid Dropper Test Kit 4.5 To 7.5 pH

    Easy to use PH test kit to keep your plants at their best and always handy to have as a backup.

    Original price $12.95 - Original price $12.95
    Original price
    $12.95
    $12.95 - $12.95
    Current price $12.95
  • Original price $536.00 - Original price $536.00
    Original price
    $536.00
    $536.00 - $536.00
    Current price $536.00

    Pro-Leaf CO2 Controller Sensor - B2

    Easily replaceable CO² sensor including temperature, humidity and light sensor to suit the Pro-Leaf B2 CO² controller. Plug and play

    Original price $536.00 - Original price $536.00
    Original price
    $536.00
    $536.00 - $536.00
    Current price $536.00
  • Original price $700.00 - Original price $700.00
    Original price
    $700.00
    $700.00 - $700.00
    Current price $700.00

    ProLeaf Co2 PPM Digital Controller PPM-B1

    Get precise C02 control with a Pro-Leaf CO2 Controller.  You can adjust the output from 400ppm - 2000ppm.  To prevent Co2 waste, dosing is restrict...

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    Original price $700.00 - Original price $700.00
    Original price
    $700.00
    $700.00 - $700.00
    Current price $700.00
  • PH Meters - Bluelab PH Replacement Probe
    Available for Backorder!
    Original price $109.95 - Original price $109.95
    Original price
    $109.95
    $109.95 - $109.95
    Current price $109.95

    Bluelab PH Replacement Probe

    The Bluelab pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution.

    Original price $109.95 - Original price $109.95
    Original price
    $109.95
    $109.95 - $109.95
    Current price $109.95
    Available for Backorder!
  • Accessories - Bluelab Pulse Multimedia EC/MC Meter
    Available for Backorder!
    Original price $420.00 - Original price $420.00
    Original price
    $420.00
    $420.00 - $420.00
    Current price $420.00

    Bluelab Pulse Multimedia EC/MC Meter

    Quickly and consistently measure moisture, nutrient (measured in conductivity) and temperature directly in the root zone without the need for pour-...

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    Original price $420.00 - Original price $420.00
    Original price
    $420.00
    $420.00 - $420.00
    Current price $420.00
    Available for Backorder!
  • Calibration Solution - HY-GEN PH Buffer- 4.0 | Calibration Solution For PH Meter
    Original price $10.95 - Original price $16.95
    Original price
    $10.95 - $16.95
    $10.95 - $16.95
    Current price $10.95

    HY-GEN PH Buffer- 4.0 | Calibration Solution For PH Meter

    Hy-Gen Calibration solution comes in 2 types, 4.0 and 7.0 Hygen pH Buffer is the upper calibration point in the "two-point" calibration of electron...

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    Original price $10.95 - Original price $16.95
    Original price
    $10.95 - $16.95
    $10.95 - $16.95
    Current price $10.95
  • Additives - Liquid Science PH RAISE & LOWER
    Save up to 50% Save %
    Original price $11.95 - Original price $19.95
    Original price $11.95 - Original price $19.95
    Original price $11.95
    $6.00 - $19.95
    $6.00 - $19.95
    Current price $6.00

    Liquid Science pH RAISE & LOWER - Click and Collect Only

    pH stability is a major factor in the ability of the plant to absorb all the necessary macro and microelements needed for sugar production. pH is t...

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    Original price $11.95 - Original price $19.95
    Original price $11.95 - Original price $19.95
    Original price $11.95
    $6.00 - $19.95
    $6.00 - $19.95
    Current price $6.00
    Save up to 50% Save %
  • Reservoir Accessories - Aqua One Heaters Glass & Quartz
    Original price $33.00 - Original price $45.00
    Original price
    $33.00 - $45.00
    $33.00 - $45.00
    Current price $33.00

    Aqua One Heaters

    Aqua One Glass Heaters makes it easy to maintain the correct temperature, by providing accurate adjustable temperature and exceptional durability. ...

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    Original price $33.00 - Original price $45.00
    Original price
    $33.00 - $45.00
    $33.00 - $45.00
    Current price $33.00
  • Reservoir Accessories - Aqua One Glass Thermometer
    Original price $6.95 - Original price $6.95
    Original price
    $6.95
    $6.95 - $6.95
    Current price $6.95

    Aqua One Glass Thermometer

    Every fish species have specific temperature requirements, the Aqua One Glass Thermometer will allow you to keep an eye on your aquarium with an ac...

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    Original price $6.95 - Original price $6.95
    Original price
    $6.95
    $6.95 - $6.95
    Current price $6.95
  • PH Test Kit - Flairform PH Test Kit  - Approx 800+ Tests
    Available for Backorder!
    Original price $12.95 - Original price $12.95
    Original price
    $12.95
    $12.95 - $12.95
    Current price $12.95

    Flairform pH Test Kit - approx 800+ tests

    For reliable & fast pH readings "Unlike electronic pH meters, there is NO complex or costly maintenance required with the pH Test Kit"Retaile...

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    Original price $12.95 - Original price $12.95
    Original price
    $12.95
    $12.95 - $12.95
    Current price $12.95
    Available for Backorder!
  • Combo Meters - Bluelab Guardian Monitor
    Available for Backorder!
    Original price $475.00 - Original price $479.00
    Original price
    $475.00
    $475.00 - $479.00
    Current price $475.00

    Bluelab Guardian Monitor

    The Bluelab Guardian Monitor provides 24 hour continuous reading for pH, conductivity (EC/ppm 700/TDS/CF) and temperature within a nutrient solutio...

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    Original price $475.00 - Original price $479.00
    Original price
    $475.00
    $475.00 - $479.00
    Current price $475.00
    Available for Backorder!