User Guide
Waterproof Palm pH Meter
Model PH220A
Introduction
Congratulations on your purchase of the Extech PH220 waterproof pH/mV meter. This
microprocessor-based device with tactile push-buttons is battery operated and ideal for
field use. The PH220 simultaneously displays pH and temperature. The rubber holster
which protects the meter has a magnetic backing for convenient mounting. The built-in
memory (25 readings) allows STORE, RECALL, and CLEAR functionality. Careful use of
this meter will provide years of reliable service.
7.00
