Bluelab Truncheon — Nutrient EC Meter

Bluelab Truncheon — The Classic Hydroponic Nutrient Meter

The iconic stick-shaped nutrient meter from Bluelab — drop the probe end into your reservoir for 1-2 minutes to match the solution temperature, and read the LED-bar display showing conductivity (EC), PPM (500 and 700 scales), TDS, or CF. Hard to overstate how useful this tool is — once you own one, you check every reservoir reading before every feed.

Why growers choose the Bluelab Truncheon:

• Fast, reliable nutrient strength readings — 1-2 minutes probe time, LED-bar display, no complex interface
• Multiple display units — EC / PPM 500 / PPM 700 / CF / TDS, switch to whichever your nutrient schedule uses
• Stick form factor — reaches into any reservoir shape, drips cleanly, stores upright
• Bluelab accuracy and durability — the reference UK hydroponic measurement brand, trusted industry-wide
• No calibration required — unlike pH pens, EC meters don't drift in the same way; clean the probe and it's ready
• Essential for hydroponic and coco growers — tells you when solution is mixed correctly, when plants are over-feeding, when run-off is accumulating salts

Who it's not for:

Measures conductivity only — pH needs a separate meter (Bluelab pH Pen). For permanent reservoir monitoring with continuous readings, the Bluelab Guardian mounts on the wall. Keep the probe end clean; mineral buildup on the electrodes affects readings.

Available to collect from our Stone shop at Unit 24, Emerald Way, ST15 0SR — or ships the same working day from our UK warehouse. Not sure if this is the right fit? Give us a ring on 01785 556355 or email sales@roots2riches.com — we're growers ourselves, happy to help.