Ista pH Pen

The Ista pH Pen is a small, compact pH measurement tool that boasts a handheld, waterproof design, a large LCD for easy viewing and a two point 4.0/7.0 adjustment system for exceptionally accurate readings. The device comes with a moist sponge in the protection cap to ensure long term accuracy and functionality and a replacement electrode in case of damage. The Ista pH Pen will auto shut ff in five minutes to save on battery life.