When analyzing samples outside the lab, don't rely on luck for measurements. The Orion Star A221 portable pH meter is designed to provide the reliability you need in a user-friendly kit, catering to your pH testing requirements. This waterproof portable meter can display key data along with measurement results, including temperature, date and time, reading type, measurement stability, calibration information, and power status.

Measurements for pH value, mV, relative mV, ORP, and temperature are available

Utilize the automatic buffer recognition feature of NIST or DIN buffer sets to perform pH calibration up to 5 points, with the option to manually input custom buffer values.

A well-informed, easy-to-read backlit image display screen, along with clear screen display indicators, simplifies operation.

Obtain critical readings through the stability indicator and optional reading modes — automatic readings maintain stability, while continuous readings with the hold option can display reading changes.

Data recording and date/time tagging can be performed for up to 1000 measurement sets.

The measuring instrument's non-volatile memory ensures that your data and settings are protected even in the event of power failure.

Orion Star Com software allows data to be transmitted to a computer via USB or RS232 connection.

Flexible power options, compatible with AA batteries or optional universal power adapter

IP67-rated housing is waterproof, sturdy, and durable, suitable for on-site operations.

The measurement kit includes: a hard surface field cover and a protective case for the measurement instrument, with an electrode bracket, adjustable wrist/hip strap, and an integrated instrument bracket.

The meter supports CE, three-in-one TUV, and FCC A-grade certification.