WTW Pocket pH/mV Meters

These are the best field meters we've tested - you can immediately sense the superior attention to detail in the materials and design. The newest technology has gone into the electrodes and sensors, making these meters highly accurate and reliable. A large LCD shows pH and mV simultaneously with temperature and time.

Model 315i
Five-button keypad helps prevent keying errors. Features simplified one-, two- or three-point calibration with auto temperature compensation and auto buffer recognition.

Model 330i
The meters are designed with an integrated datalogger for 500 measurements, MultiCal^® automatic calibration. With these feature-packed waterproof meters, you also receive AutoRead for stable and reproducible measurements, corrosion-protected gold-plated contacts, and a built-in real-time clock.

Model 340i
Same features as Model 330i, but Model 340i offers additional analog and digital RS-232 output. Operates 3000 hours on four AA batteries (not included). Models 330i and 340i offer GLP supporting functions.

Meters come with professional waterproof case, including built-in measuring setup and separate compartment for electrode and accessories, stand, WTW technical buffers pH 4.01, 7.00 and 10.00, KCl solution (3mol/L), beaker and operating instructions.