The ultimate solution for measuring pH, conductivity and temperature on the go!

• Your toolbox contains: Bluelab pH Pen, Bluelab Conductivity Pen, Bluelab Grow Book, Bluelab Probe Care Kit – pH and Conductivity 
• Measure pH, conductivity and temperature in solutions 
• Care, clean and calibrate your products with the Bluelab Probe Care Kit 
• Bluelab pH Pen is easy and fast to calibrate for ongoing accuracy 
• Fully waterproof pens, not just water-resistant 
• Selectable measurement units so you can customise with your preferences 
• Bluelab Conductivity Pen has a flat electrode for easier cleaning 
• Hold reading function to capture every measurement with ease 
• Automatic temperature compensation for accurate readings anywhere 
• Auto-off function to extend battery life 
• 1 x AAA battery included with each pen, getting you started immediately