Bluelab Soil pH Pen

The Bluelab Soil pH Pen is a pocket-sized pH meter designed to read directly in the growing medium. With its dibber cap, you open a hole in substrate, coco, or rock wool and take a measurement right in the root zone. You can also use it in nutrient solution. It answers the age-old question: knowing the actual pH of the roots, not just the irrigation water.

Benefits

• Measures pH and temperature in substrate, coco, rock wool, and nutrient solutions.
• Range of 0.0 to 14.0 pH, with resolution and accuracy of ±0.1 and automatic temperature compensation.
• Double-junction probe, more stable and resistant to working in solid media.
• Waterproof body and backlit display, convenient for grow rooms or greenhouses.
• Storage cap with KCl solution keeps the probe hydrated between uses.

How to use

Calibrate to two points with the included pH 7.0 and 4.0 solutions; the meter will remind you to recalibrate after 30 days. Moisten the substrate, open a hole with the dibber, and insert the tip until the reading stabilizes. Rinse with clean water and replace the cap with KCl.

Get it at Pachamama Indoor Farming Culture, with shipping throughout Costa Rica.

Technical Specifications

• Brand: Bluelab
• Type: Pocket pH meter for substrate and nutrient solution
• pH range: 0.0 to 14.0, resolution 0.1, accuracy ±0.1 pH
• Temperature range: 0 to 50 °C (32 to 122 °F), accuracy ±1 °C
• Double-junction pH probe; waterproof body and backlit display
• Power: 1 alkaline AAA battery, with automatic shut-off

How to Use

• Calibrate to two points with pH 7.0 and 4.0 solutions before first use
• Moisten the substrate and open a hole with the dibber before inserting the tip
• Wait for the reading to stabilize before recording the value
• Rinse the probe with clean water after each measurement
• Store the probe with its storage cap with KCl solution, never dry
• Recalibrate at least every 30 days or when the calibration indicator disappears