GT pH Probe KCl Storage Solution – Keep Your Electrode Accurate & Protected (250ml, 1L)

The #1 Reason pH Probes Fail Early — And How to Prevent It

Storing your pH probe in plain water — or letting it dry out between uses — is the fastest way to destroy a sensitive electrode. GT pH Probe KCl Storage Solution is specifically formulated to keep your probe’s reference junction hydrated, balanced, and ready to deliver fast, accurate readings every single time you use it. A small habit that protects a big investment.

Why Proper Storage Matters

• 🔬 Prevents the electrode from drying out — a dry probe loses its ionic balance and can’t be fully restored, even with soaking
• 🔬 Maintains the KCl concentration in the reference junction — keeps the junction primed so your probe stabilises instantly when you dip it
• 🔬 Prevents contamination between uses — protects the sensitive glass bulb from airborne contaminants and cross-sample residue
• 🔬 Extends probe lifespan significantly — probes stored correctly last years longer than those stored in water or left to dry
• 🔬 Ensures fast stabilisation — a well-stored probe gives you a stable reading in seconds, not minutes

How to Store Your pH Probe Correctly

1. After each use, rinse the probe tip thoroughly with clean water
2. Pour enough GT pH Probe Storage Solution into a clean container to cover the probe tip by at least 2cm
3. Keep the probe fully immersed in storage solution between every use — never plain water, never dry
4. Replace the storage solution every 1–2 weeks, or sooner if it becomes discoloured or cloudy
5. Recalibrate regularly using pH Buffer 7 and pH Buffer 4 to maintain accurate readings

⚠️ Never store your pH probe in plain water. Plain water dilutes the KCl in the reference junction, causing slow response times, drifting readings, and permanent electrode damage over time.

Choose the Right Size

• 250ml — perfect for home growers with one or two pH meters
• 1L — best value for regular growers, commercial operations, or anyone maintaining multiple probes

Complete Your pH Probe Maintenance Kit: Pair with GT pH Probe Cleaner for deep cleaning and GT pH Buffer 4 & 7 for accurate calibration — everything your probe needs to perform at its best, every grow.

By Growth Technology — trusted by Australian hydroponic growers for decades.