Setup 6 min read 2026-02-15
pH & EC Meter Calibration Guide
A Rs 600 pH and EC meter prevents 80% of the silent killers in your garden. Used right, it tells you whether to feed, flush, or just walk away.
Calibration is non-negotiable
Calibrate pH with 4.0 and 7.0 buffer solution before each session. EC meters calibrate with 1413 microsiemens/cm standard.
Reading targets
Soil pH: 6.0-6.8 (most veggies). Hydroponic EC: 1.2 for seedlings, 1.8 for greens, 2.4 for fruiting. Adjust pH up with potassium hydroxide, down with citric acid.
Storage
Never store probes dry. Keep in pH 4 buffer or 3 M KCl solution. A dry probe is a dead probe in 48 hours.
Common reading mistakes
- Reading immediately after watering (wait 30 minutes)
- Probing only one spot (test 3 spots and average)
- Skipping rinses between samples
📌 Next steps: Try the Autonomy Simulator or browse crop guides.