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Tried, tested and loved by growers for decades, the Bluelab Truncheon Nutrient Meter is renowned as the best conductivity meter for measuring solution. This brilliantly simple, bullet-proof nutrient meter allows you to measure and adjust nutrient levels for optimal plant performance.

The Bluelab Truncheon Nutrient Meter may have been designed for everyday use, but we guarantee that it’ll become your growing companion for life.

Bluelab Truncheon Nutrient Meter

The instrument is only as accurate as the probe is clean. Accurate readings simplify crop management and provide improved growth.

Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe.

The probe surface is where the instrument takes the reading of the solution or soil/media. If the probe face is dirty or contaminated, the readings may be inaccurate. Much like the windshield of a car, if it's dirty you can't see out! If the probe face is dirty, it cannot read the solution or soil accurately.

pH probes specifically, should be kept wet at all times for optimal performance and life.

Bluelab pH Probe Care

The instrument is only as accurate as the probe is clean. Accurate readings simplify crop management and provide improved growth.
 
Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe.
 
The probe surface is where the instrument takes the reading of the solution or soil/media. If the probe face is dirty or contaminated, the readings may be inaccurate. Much like the windshield of a car, if it's dirty you can't see out! If the probe face is dirty, it cannot read the solution or soil accurately.
 
A tip… if the conductivity reads low, the probe needs cleaning. pH probes specifically, should be kept wet at all times for optimal performance and life.

Bluelab pH & Conductivity Probe Care

Keep your nutrient readings reliable with Bluelab 2.77 EC Conductivity Standard Solution (500 ml / 16.9 fl oz)—an essential reference solution for calibrating and/or testing conductivity (EC/PPM) probes. Accurate EC measurement helps you maintain consistent nutrient strength, reduce waste, and avoid common feeding problems caused by solutions that are too weak or too strong.

Bluelab conductivity standard solutions are manufactured specifically for Bluelab® products and referenced to high laboratory standards, helping your meters and probes stay accurate and perform longer. Combined with regular probe cleaning, this standard solution is one of the simplest ways to improve day-to-day EC/PPM confidence.

Key Benefits
2.77 EC standard for checking and maintaining EC/PPM accuracy

Ideal for calibrating or testing conductivity probes (where applicable)

Helps support consistent feeding and better crop performance

Works with all Bluelab® conductivity products

Referenced to high laboratory standards for dependable results

Bluelab 2.77EC Conductivity Standard Solution 500ml

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