Bluelab Conductivity Pen – Digital EC, PPM & Temperature Meter - New Zealand

Take the guesswork out of nutrient management with accurate EC and temperature measurements.

The Bluelab Conductivity Pen is a reliable, easy-to-use digital meter designed to measure electrical conductivity (EC), total dissolved solids (TDS/PPM) and temperature in nutrient solutions.

Maintaining the correct nutrient concentration is essential for healthy plant growth. Too many dissolved nutrients can contribute to nutrient stress and burn, while insufficient nutrients may lead to deficiencies and poor plant development.

The Bluelab Conductivity Pen provides quick, reliable readings so you can monitor nutrient strength and make informed adjustments to your feeding programme.

Featuring automatic temperature compensation (ATC), a waterproof floating design and a bright backlit display, this compact handheld instrument is ideal for home gardeners, hydroponic growers, commercial nurseries and greenhouse operators.

Factory calibrated and ready to use straight out of the box, the Bluelab Conductivity Pen makes everyday nutrient monitoring simple and convenient.

Key Features & Benefits

• Measures EC, PPM & Temperature – Monitor nutrient solution strength and temperature using one compact digital instrument.

• Multiple Conductivity Scales – Select EC, CF, PPM 500 (TDS) or PPM 700 to suit your preferred measurement system.

• Automatic Temperature Compensation (ATC) – Adjusts conductivity readings for temperature variations to improve consistency.

• Factory Calibrated – Ready to use immediately, with optional manual calibration.

• Fully Waterproof & Floating Design – Suitable for everyday use around nutrient reservoirs and irrigation systems.

• Bright Backlit LCD Display – Easy-to-read measurements, even in low-light growing environments.

• Hold Reading Function – Freeze readings on screen for convenient recording.

• Compact & Portable – Ideal for testing nutrient tanks, hydroponic systems and irrigation water.

• Automatic Power-Off – Helps conserve battery power.

• Low Battery Indicator – Alerts you when the battery needs replacing.

• Easy Probe Maintenance – Designed for convenient cleaning and routine care.

• 1-Year Limited Warranty – Backed by Bluelab's manufacturer's warranty.

Why Measure Electrical Conductivity (EC)?

Electrical conductivity measures the concentration of dissolved ions in water, providing a useful indication of nutrient solution strength.

Regular EC monitoring helps growers:

• Maintain appropriate nutrient concentrations for different plant growth stages.

• Detect nutrient solutions that are too concentrated or too dilute.

• Reduce the risk of overfeeding and nutrient stress.

• Monitor nutrient reservoirs and irrigation water.

• Improve consistency in hydroponic and greenhouse production.

• Make better-informed nutrient management decisions.

Important: EC indicates the overall concentration of dissolved ions, not the exact amount of each individual nutrient.

Ideal For

• Hydroponic growing systems

• Commercial horticulture and greenhouses

• Indoor growing and grow tents

• Nutrient reservoir monitoring

• Fertigation and irrigation systems

• Plant nurseries and propagation facilities

• Nutrient solution preparation

• Runoff and drainage solution testing

Technical Specifications

What's Included

• 1 × Bluelab Conductivity Pen

• 1 × AAA Alkaline Battery

Care & Maintenance

For reliable measurements, regularly rinse and clean the conductivity probe to prevent mineral deposits and nutrient residue from accumulating.

Use the recommended Bluelab Conductivity Probe Care Kit for periodic cleaning and maintenance.

The Conductivity Pen is factory calibrated, although manual calibration can be performed when necessary.

Bluelab Conductivity Pen – A practical, professional-quality EC meter for confident nutrient management and healthier growing results.