Bluelab Hydroponic Supplies > Water Test Meters & Solutions > EC & pH Meters Bluelab Conductivity / EC Pen

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Bluelab Conductivity / EC Pen

Name: Bluelab Conductivity / EC Pen
Brand: Bluelab
SKU: HyBl773
Price: 149.0 AUD
Availability: InStock
Rating: 5.0 (2 reviews)

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Bluelab

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$149.00 $155.00

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The Bluelab Conductivity Pen is a compact and reliable tool designed for accurately measuring the conductivity and temperature of your nutrient solutions.

Essential for hydroponic and soil-based growers alike, this pen ensures your plants receive the optimal nutrient levels for healthy growth. Its durable, waterproof design and user-friendly features make it a trusted companion for both home and commercial growers.

Key Features:

Measures Conductivity and Temperature:
Provides quick and precise readings of nutrient strength and solution temperature, aiding in optimal plant nutrition management.
Selectable Units for Conductivity and Temperature:
Customize your measurements with options to display conductivity in EC, CF, PPM 500 (TDS), or PPM 700 scales, and temperature in °C or °F.
Backlit LCD Display:
Ensures clear visibility of readings, even in low-light environments.
Calibration Optional:
Factory calibrated for convenience, with an optional calibration feature for those who prefer periodic recalibration.
Successful Calibration Indicator:
Displays a check mark to confirm successful calibration, providing confidence in your readings.
Hold Reading Function:
Allows you to freeze the current measurement on the display for easy recording.
Low Battery Indicator:
Alerts you when the battery needs replacement, ensuring uninterrupted use.
Fully Waterproof:
Designed to withstand wet conditions and will float if accidentally dropped into a solution.
Auto-Off Function:
Conserves battery life by automatically turning off after 4 minutes of inactivity.
Automatic Temperature Compensation (ATC):
Ensures accurate conductivity readings regardless of temperature fluctuations.
Powered by 1 x AAA Alkaline Battery:
Includes a replaceable AAA battery, allowing you to start measuring immediately.

Why You’ll Love It:

Maintaining the correct nutrient concentration and solution temperature is vital for plant health and yield. The Bluelab Conductivity Pen simplifies this process with its accurate measurements and intuitive design. Its waterproof and durable construction ensures it can withstand the rigors of daily use, while features like the backlit display and hold function enhance usability. Whether you're a hobbyist or a professional grower, this pen provides the essential data needed to optimize your growing conditions.

FAQs:

Is the Bluelab Conductivity Pen suitable for hydroponic systems?
Yes, it's specifically designed to measure nutrient solutions in hydroponic setups, ensuring your plants receive the correct nutrient concentrations.

Can I use this pen for soil-based gardening?
While primarily intended for liquid nutrient solutions, it can be used to measure runoff solutions in soil-based systems to monitor nutrient levels.

How often should I calibrate the pen?
The pen comes factory calibrated and doesn't require frequent calibration. However, if you choose to calibrate, it's a straightforward process, and the pen provides a successful calibration indicator for assurance.

What is the temperature range it can measure?
The Bluelab Conductivity Pen measures temperatures from 0°C to 50°C (32°F to 122°F), accommodating a variety of growing environments.

Is the device waterproof?
Yes, the pen is fully waterproof and designed to float if dropped into a solution, making it durable and reliable for everyday use.

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Frequently Asked Questions (FAQ)

Click to read our FAQs & learn more!

What does the Bluelab Conductivity / EC Pen measure?

It measures nutrient strength (EC, ppm 500/700) and temperature in your water or nutrient solution. It does not measure pH — you'll need a separate pH meter for that.

What measurement range does the EC Pen cover?

It reads from 0.0–10.0 EC, 0–5000 ppm (500 scale), 0–7000 ppm (700 scale), and temperatures from 0–50°C (32–122°F), with automatic temperature compensation for consistent readings.

Is EC better than ppm for measuring nutrient strength?

Yes — EC is the universal standard. PPM readings are helpful but vary by region or meter scale (500 or 700), which can cause confusion when comparing charts.

How accurate is the Bluelab EC Pen?

When clean and used correctly, it's accurate to around ±0.1 EC. Automatic temperature compensation keeps readings stable as solution temps change.

Where can I use the Bluelab EC Pen?

It’s great for hydroponic systems, coco, and soil-based grows. You can test feed water, runoff, or nutrient reservoirs using a sample cup or directly in the tank.

Does the EC Pen need calibration?

It's factory calibrated and doesn’t require regular recalibration. For accuracy checks, clean the probe and test it in a standard solution like 2.77 EC.

How should I clean the Bluelab EC Pen?

Rinse after each use. For deeper cleaning, gently scrub the flat sensor with a soft cloth and unscented cream cleanser or EC probe cleaner. Avoid scented soaps as they can contaminate the probe.

How often should I clean the EC Pen?

Rinse after each use, and deep-clean weekly or whenever readings seem off — especially if you're using organic nutrients, which can leave residue.

Is the Bluelab EC Pen waterproof?

Yes — it’s fully waterproof and built to survive splashy grow environments. Many Bluelab pens also float, adding extra peace of mind.

What features does the EC Pen include?

It has a backlit display, hold function, auto-off after about 4 minutes, and a low battery warning. It runs on 1 × AAA alkaline battery (not rechargeable).

Why is my EC reading too high or too low?

High readings may mean contamination or poor mixing; low readings often indicate a dirty sensor. Always clean the probe and retest in a known standard to troubleshoot.

Why does EC rise or drop over time in my reservoir?

Evaporation increases EC as water leaves behind salts. Adding plain water can dilute it and lower EC. Plant uptake patterns also affect EC balance.

Can I test concentrated nutrients with the EC Pen?

No — always measure diluted, mixed solutions. Concentrates are outside the meter’s readable range and won’t give meaningful readings for plant feeding.

What’s the best order for mixing and testing nutrients?

Mix nutrients first, then use the EC Pen to check conductivity. After that, adjust pH with a separate pH meter. Mixing in this order avoids chasing unstable numbers.

What’s the most common mistake with the EC Pen?

Not cleaning it. A dirty sensor gives inaccurate readings. Rinse after use, deep-clean regularly, and check accuracy against a standard to keep results reliable.

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