Solinst 407 Bladder Pump Configuration:1.0" Stainless Steel x 2ft - 316 SS Balls Dissolved oxygen (optical RDO®)

Dissolved oxygen (optical RDO®)

Used with: YSI 556 (requires the guard extension kit and a 2-port ProSeries/556 cable)

Backlight display and enlarged font capability

Typical uses include detecting LNAPL (floating product like gasoline or oil) and DNAPL (sinking dense product) layers in groundwater monitoring wells

Solinst 407 Bladder Pump Configuration:1.0" Stainless Steel x 2ft - 316 SS Balls Dissolved oxygen (optical RDO®)The 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