Bluelab Conductivity Pen
Bluelab Conductivity Pen
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Healthy plants need nutrients— but not too little, not too much. Bluelab Conductivity Pen measures EC, ppm (TDS) and temperature, giving you the confidence to monitor nutrient strength and make informed adjustments. Fast, accurate and easy to use, it's an essential tool for maintaining healthy growth and getting the most from every feed.
EC (Electrical Conductivity) measures nutrient solution strength, while PPM (Parts Per Million) and TDS (Total Dissolved Solids) are simply different ways of displaying the same information. Monitoring these readings helps ensure your plants receive the right amount of nutrients at every stage of growth. Feeding too little can lead to slow growth and deficiencies, while feeding too much can cause nutrient burn and nutrient lockout.
Why Growers Love It
- Measures EC, ppm 500 (TDS), ppm 700 and temperature in one compact meter.
- Fast, accurate nutrient readings - so you can adjust feed as needed.
- Factory calibrated and ready to use straight out of the box.
- Automatic Temperature Compensation (ATC) for reliable readings across changing temperatures.
- Bright backlit display that's easy to read in any grow space.
- Measures temperature in both °Celsius and °Fahrenheit.
- Waterproof design floats if dropped in your nutrient reservoir (phewh).
- Compact handheld design that's convenient to carry and use.
- Powered by a single AAA battery.
- Backed by a 1-year limited warranty.
Grow Tip
Regularly checking your nutrient strength helps prevent both underfeeding and overfeeding. Healthy nutrient levels encourage stronger growth, while incorrect concentrations can lead to deficiencies, nutrient burn and reduced plant performance.
Pairs Perfectly With
Pair your Conductivity Pen with the Bluelab pH Pen for complete nutrient management. Your Conductivity Pen tells you how much nutrient is in your solution, while the pH Pen tells you whether your plants can actually absorb it. Together, they give you the complete picture for healthier plants and more confident growing.
Because the right feed starts with the right reading.
Additional Details
Shipping & Delivery
In Stock Quantities Online may vary due to in store sales. Online quantities are pulled from all of our branches stock levels.
- We will do our best to fulfil your order. If your order cannot be filled promptly you will be refunded via method of purchase or contacted to arrange alternate options.
We will only deliver to a New Zealand address at this point in time. We don’t deliver to PO Boxes.
Pickup orders may show available in store on the product page but may not be available in the quantities in your cart. You may have to adjust the quantities in your cart at checkout to be able to pick up at a specific store.
- Pickup Orders are confirmed once checked by staff at location of pickup. Please wait to be contacted by staff before coming to store.
Photo ID Of Person Who's Name is On The Order Must Be Presented to staff when picking up and must match name on order. We do not accept name changes of orders once placed so please make sure you are filling in the correct details.
If goods are Not Received within 7 days of purchase, contact us.
Any Damaged or Missing Items from your order must be brought to our attention within 7 days of receiving your order.
If your item is Oversized or More Than 25kg you may be contacted for an additional freight charge to be calculated upon picking of order.
We use Courier Post as our freight provider. Prices and providers are subject to change without prior notice.
To ensure successful delivery make sure there is some one Present at the Delivery Address during business hours.
Delivery times are normally 1-2 days to the North Island and 2-5 days to the South island once dispatched. Rural delivery can take an extra day longer.
In Stock Quantities Online my vary due to in store sales. We will do our best to fulfil your order promptly. If your order cannot be filled promptly you will be refunded or contacted to arrange alternate options.