The SPER Portable Oxygen Reduction Potential (ORP) pen works great for water testing! Highly stable and accurate readings with a large LCD display with easy one-handed operation.
This Oxygen Reduction Potential (ORP) pen works great for water testing! Highly stable and accurate readings with a large LCD display with easy one-handed operation. Features auto power-off, hold function and a low-battery indicator. The case is waterproof and will float if accidentally dropped into the water. Comes with 4 button-cell batteries and a built-in probe with protective cap.
1-800-452-1261
