Double Valve Pumps can provide high quality, representative groundwater samples. However, to get the best quality samples from your pump, it is critical to understand how the Double Valve Pump works and how to operate it properly. Double Valve Pump Operating Principles: When a Double Valve Pump is submerged, hydrostatic pressure… Continue Reading »
Since 1996, low flow sampling has become an increasingly approved method for obtaining high quality groundwater samples. Through the work of Puls and Barcelona, the US EPA released standard operating procedures for low flow sampling (EPA/540/S-95/504). Following such guidelines Continue Reading »
Solinst Model 407 Bladder Pumps and Model 408 Double Valve Pumps have a lot in common. Both are pneumatic pumps, both are excellent for providing representative groundwater samples, and both are widely used for low flow and VOC sampling. On the outside, Solinst Bladder Pumps and Double Valve Pumps look almost identical – but internally… Continue Reading »
