The PHTEMP101 data logger from Hoyt Electrical Instrument Works Inc. is a miniature, battery-powered, stand-alone pH and temperature recorder. An all-in-one portable device, this data logger will measure and record up to 13,107 measurements per channel. It will directly connect to many commonly used pH electrodes, and to many ORP electrodes as well. The storage medium is non-volatile solid-state memory, and the device can be started and stopped directly from your computer. Data retrieval is intended to be quick and easy – simply plug it into an empty COM port and the software does the rest.

Hoyt Electrical Instrument Works Inc., Card #17