YSI Pro20 Dissolved Oxygen (D.O.) Meter - Field Kit Air Diffusers The diaphragm compressor is completely

The diaphragm compressor is completely oil-less

Simple messenger-triggered mechanism closes the bottle at the desired sampling depth

Product Code: 7519-01

while the durable knit construction stands up to repeated use in demanding work environments

YSI Pro20 Dissolved Oxygen (D.O.) Meter - Field Kit Air Diffusers The diaphragm compressor is completelyProduct Code: 603171 YSI #603171 Pro20 Polarographic DO 4 Meter Kit includes: Pro20 dissolved oxygen handheld 4 meter cable with galvanic DO sensor Cap membrane kit (1. 25 Mil PE membranes) Case included #603162 smaller soft sided carrying case accommodates up to 10 m DO temp; 4 m Quatro cables; and includes 3 each 100 mL plastic bottles The YSI Pro20 dissolved oxygen meter is a rugged, user friendly instrument for dissolved oxygen measurement. User