YSI Pro1020 Dissolved Oxygen and pH or ORP Meter

Source: YSI, a Xylem brand

The Pro1020 from YSI is a portable dissolved oxygen meter with pH or ORP. Easy to use, rugged and reliable, the Pro1020 provides everything you need in a handheld instrument for the measurement of dissolved oxygen, temperature and either pH or ORP. User-replaceable sensors and cables, 50 data set memory, and convenient calibration routine makes it user friendly. A true field instrument; Mil-spec (military spec) connectors, IP67 waterproof, rubber over molded case, and 1-meter drop tests ensure durability to provide years of sampling even in the harshest field conditions.