Solinst 407 Bladder Pump geosub and ships with four interchangeable

and ships with four interchangeable tips — general-purpose

communication

consistent readings

Pre-measured powder packets for consistent

portable monitoring system that delivers accurate

Solinst 407 Bladder Pump geosub and ships with four interchangeableThe Solinst 407 Mk2 Bladder Pump is a pneumatically driven groundwater sampling pump built around a flexible Santoprene bladder inside a rigid stainless steel or PVC body. Compressed air or nitrogen from a surface control unit pressurizes the space between the bladder and the housing, collapsing the bladder and forcing the water inside it up through a check valve to the discharge line; venting the drive pressure lets the bladder re expand and refill