Growth Technology EC Calibration Solution, 300ml

Growth Technology EC calibration solution is a liquid with a precise, known conductivity, so you can check that your EC meter is reading correctly and adjust it if it has drifted.

It is the quiet hero of hydroponic feeding. A correct EC reading means herbs and salad get the gentle feed they like, and tomatoes get a little more, without any guessing.

EC calibration solution for meters and pens

Choose 1.413mS/cm, the most common calibration point and close to the gentle feed strengths herbs and salad enjoy, or 2.76mS/cm for checking meters at stronger feed levels.

Each comes in a 300ml bottle, enough for many calibrations if you pour out a little each time.

Who needs EC calibration solution

• Anyone with an EC pen or 5-in-1 meter
• Hydroponic gardeners feeding a countertop garden or DWC bucket
• Tomato and chilli growers who feed by EC
• Anyone whose readings suddenly seem too high or low

How to check your EC meter

• Pour a little into a clean cup. Keep the bottle pure by never dipping the meter straight in.
• Rinse the probe. Use distilled water and shake it dry.
• Dip and wait. Let the reading settle for a few seconds.
• Adjust to match. Set the meter to 1.413 or 2.76, depending on your bottle.
• Discard the used solution. Fresh solution each time keeps it accurate.

EC calibration questions

Which EC calibration solution do I need?
1.413mS/cm (1,413µS/cm) suits most home meters. Choose 2.76mS/cm if you mainly feed at higher strengths or your meter asks for it.

How often should I calibrate an EC meter?
About once a month with regular use, and whenever readings look odd.

Is EC calibration solution the same as pH buffer?
No. pH buffer checks acidity; EC solution checks conductivity. A 5-in-1 meter may need both.

How should I store it?
Keep the cap tight, the bottle cool and out of sunlight.

The details

Sizes and measurements

In the box

One 300ml bottle of your chosen standard.

Feed with confidence, every single time.