Solinst 408M Micro Double Valve Pump ATC The Hanna HI99301 is a

The Hanna HI99301 is a rugged

NaCl and 442 Natural Water solution modes

renowned for its portability and ease of use

Simply immerse all wetted parts in the diluted solution

groundwater wells

Solinst 408M Micro Double Valve Pump ATC The Hanna HI99301 is aThe 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