Solinst 408M Micro Double Valve Pump Assembly Length:3/8" Pump (PTFE) and chemical permeation

and chemical permeation

converting readings to Specific Conductance

but must be submerged at all times

even in the harshest conditions

Organic vapor zeroing kit

Solinst 408M Micro Double Valve Pump Assembly Length:3/8" Pump (PTFE) and chemical permeationThe Solinst 408M Micro Double Valve Pump miniaturizes the same double check valve pumping principle as the 408 into a flexible, coaxial PTFE tubing assembly only 3 8" in overall diameter. A small filter pump body at the intake fitted with a sintered 316 stainless steel 50 micron screen feeds formation water into both an outer annular drive line and an inner 3 16" sample line. Compressed gas cycled down the annulus by a surface control unit closes a