Collection: EC Calibration & Probe Care

EC calibration & probe care

EC calibration and probe care products keep your electrical conductivity (EC) meter reading accurately over time. Whether you're dialling in a home grow tent or managing a full nutrient program, this range covers conductivity calibration solutions and probe care products from Apera Instruments and Australian Scientific, so every EC reading you take can be trusted.

Why EC calibration matters

An EC meter that's out of calibration will misread nutrient strength, and overfeeding or underfeeding is one of the most common causes of stunted growth, nutrient burn and poor yields. Regular calibration against a known reference solution — paired with proper probe cleaning and storage — keeps every EC reading trustworthy, so you can dose nutrients with confidence at every stage of the grow.

What's in this collection

Conductivity calibration solutions in standard mS/µS reference points

Probe cleaning solution to remove salt and mineral build-up

Apera Instruments-compatible calibration and care solutions

Australian Scientific conductivity buffer solutions

How to choose

Calibration solution, storage solution and cleaning solution do different jobs — calibration solution sets your meter's reference point, storage solution keeps the probe hydrated between uses, and cleaning solution clears salt build-up that skews readings. Most growers need all three on hand.

If you're just getting started, a straightforward routine works best: rinse the probe after every use, calibrate weekly, and store it in storage solution rather than tap water or dry air. Experienced growers running daily EC checks may prefer to calibrate more often.

A-Grade Hydroponics stocks EC calibration, cleaning and storage solutions from trusted brands including Apera Instruments and Australian Scientific, backed by expert advice from our Melbourne-based team. Browse the range below to keep your EC meter accurate and your nutrient dosing on point.