Bluelab Soil pH Pen
Bluelab Soil pH Pen
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The Bluelab Soil pH Pen measures pH and temperature directly in soil, coco coir, rockwool or nutrient solutions (no messy soil slurries required) and takes the guesswork out of checking your root zone. With fast, accurate readings, you'll have the confidence to make the right adjustments to keep your plants living their best life. Healthy roots start with healthy soil.
Why Growers Love It
- Measures pH and temperature directly in soil, coco coir, rockwool and nutrient solutions.
- No messy soil slurries—simply measure straight in the root zone.
- Fast, accurate pH readings from 0.0–14.0 pH (±0.1 pH accuracy).
- Measures temperature from 0–50°C (32–122°F) in both °C and °F.
- Robust storage cap and dibber makes it easy to take measurements directly from the root zone.
- KCl-filled storage cap keeps the probe hydrated between uses.
- Compact handheld design that's comfortable and easy to use.
- Bright backlit display for easy reading in any grow space.
- Double-junction pH probe for dependable, long-lasting performance.
- Simple 2-point calibration with a convenient 30-day reminder.
- Waterproof construction for reliable use with nutrient solutions.
- Powered by a single AAA battery for everyday convenience.
- Includes pH 7.0 & pH 4.0 calibration sachets plus KCl Storage Solution to get you started.
- Backed by a 1-year limited warranty.
Grow Tip
Checking your root zone regularly is one of the easiest ways to catch problems before your plants show signs of stress. Keep your Soil pH Pen calibrated with Bluelab pH Calibration Solutions and always store the probe in the KCl-filled storage cap or with Bluelab KCl Storage Solution to maintain fast, accurate readings.
Remember: if it dries, it dies!
Pairs Perfectly With
Pair your Soil pH Pen with Bluelab pH 4.0 & pH 7.0 Calibration Solutions for routine calibration, and keep a bottle of Bluelab pH Probe KCl Storage Solution on hand to maximise the life and accuracy of your probe.
Because healthy plants start at the roots.
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.