Aqua Master Tools E50 Pro Replacement Electrode

A genuine spare probe that keeps an E50 Pro meter working for years, not months

The E50 Pro is a compact EC and temperature pen meter, and like the rest of the Aqua Master Tools range it is built around the idea that the electrode — the one part that takes physical wear from repeated dipping into nutrient solution — should be replaceable on its own rather than forcing growers to bin the whole pen when the probe eventually degrades.

This is the factory-spec replacement electrode for the E50 Pro, IP67 waterproof and fitted with the same connector as the original, so it is a straightforward screw-in swap. It is worth keeping a spare in the cupboard for any grower who relies on their E50 Pro for daily reservoir checks, since electrodes are consumable items that naturally lose accuracy over time with regular use, and a five-minute electrode swap is a lot cheaper than a new meter.

• Genuine replacement electrode built to original E50 Pro specification
• IP67 waterproof for reliable use around nutrient reservoirs
• Simple screw-in swap — no need to replace the whole pen meter
• Restores measurement accuracy once the original electrode wears
• Keeps a daily-use meter running for years rather than months