YSI PRO Series 20i - Dissolved Oxygen Meter (Integral Cable Kit) DO Sensor:Galvanic (2002) Its robust construction ensures durability

Its robust construction ensures durability and reliability

4 Sensor slots for up to 6 gas measurements using combination sensors

Measures: pH or ORP

and NDIR for CO2

YSI PRO Series 20i - Dissolved Oxygen Meter (Integral Cable Kit) DO Sensor:Galvanic (2002) Its robust construction ensures durabilityThe YSI Pro20i is a dissolved oxygen and temperature meter with an integral (non detachable) field cable a direct replacement for the discontinued Model 55 and 550A. Every configuration ships complete: handheld, cable, and DO sensor included, so there's nothing else to add. Choose a Polarographic DO sensor for long sensor life, or a Galvanic DO sensor for immediate sampling with no warm up. IP 67 waterproof, 1 meter drop tested, and EPA approved for