Dual Display pH Pens

Conveniently sized to fit in the palm of your hand
Clearly and accurately display pH and temperature simultaneously
Begin reading samples immediately and increase efficiency in your lab with easy-to-use pH Pens. Small enough to fit in your pocket, with extra large monitors, these Pens deliver precise results while you work on numerous projects throughout the lab. A wider pH range and automatic temperature compensation ensures reliable measurements. Calibration up to three points. A protective cap keeps the built-in electrode moist and protected. Pens include four button-cell batteries. No. 155904 has a higher resolution and level of accuracy. 20mL Buffer Kit is made up of sixty 20mL packets, 20 each of pH buffer 4.0, 7.0 and 10.0. 500mL Buffer Kit consists of three 500mL bottles, one each of pH buffer 4.0, 7.0 and 10.0.
NIST-Traceable Calibration meets ISO/IEC 17025 accreditation.
Compliance: IP65.