Bluelab Conductivity Pen

Bluelab Conductivity Pen is a handheld conductivity (EC) and temperature pen for checking nutrient levels and solution temperature, so you can maintain a stable nutrient environment for plant growth. It’s a portable ec meter made for simple, reliable ec spot checks when you want fast confirmation of nutrient strength without a bulky handheld meter.

Built for everyday monitoring, this compact handheld design is easy to carry and quick to read. The bright backlit display keeps numbers clear in dim grow rooms, and pocket-sized accuracy helps you stay consistent from one check to the next. By tracking nutrient level trends, you can maintain more accurate nutrient levels over time, which can help reduce nutrient burn or stunted growth caused by over- or under-feeding.

Temperature matters just as much as nutrient strength, because solution temperature can influence a plant’s growth rate and structure. The Bluelab Conductivity Pen includes an integrated temperature sensor and uses automatic temperature compensation to keep conductivity readings dependable as conditions shift. That makes it a practical ec and temp meter for growers who want quick and accurate readings without second-guessing whether temperature changes are skewing the result.

This pen offers in-built measurement units for common conductivity scales, letting you choose ec, cf, ppm 500 (TDS), or ppm 700 based on your preference. Temperature can be read in °c or °f, so it fits the way you already track your environment. It’s factory calibrated and ready to use immediately, which keeps setup simple and helps you focus on consistent monitoring rather than constant recalibration.

Day-to-day durability is a big part of why growers reach for this style of meter. The Bluelab Conductivity Pen is waterproof and floats in any solution, making it well suited to routine reservoir checks and general nutrient solution monitoring. The result is a robust handheld solution for measuring conductivity and temperature on the go, with a clear display and flexible units that match how growers shop, compare, and manage nutrient strength.

This conductivity pen is a good fit for home growers who want simple, reliable ec spot checks with automatic temperature compensation, a bright backlit display, and a waterproof pen that’s ready whenever you need a fast nutrient level confirmation.

Product benefits: Accuracy; Plant Health; Easy Setup; Compact; Consistent Results; Long-Lasting; Consistent Performance; Indoor.

Specifications: Display: Digital; Measurements: EC / PPM 500 / PPM 700; Temperature Range: 0.0 - 50.0 °C; Temperature Accuracy: ±1 °C; Temperature Accuracy: ±2 °C; EC Range: 0.00 - 10; EC Resolution: 0.1 mS/cm; EC Accuracy: ±0.1; TDS Range (500 CF): 0 - 5000 ppm; TDS Accuracy: ±50; Operating Temperature: 0 - 50 °C; Battery Type: AAA.