What is a Discrete Interval Sampler? The Solinst Model 425 Discrete Interval Sampler (DIS) is a “no purge” instrument, designed to obtain representative groundwater samples from a specific sampling zone without the need for purging. It is a stainless steel sampler pressure activated using a hand pump. We’ll discus how it actually works… Continue Reading »
An environmental monitoring program is an essential part of any successful landfill operation. Monitoring ensures that a landfill is functioning as it should, and that wastes do not migrate off-site or pose potential risks to nearby receptors. Regular environmental reporting ensures that operators comply with the regulations and approvals that govern them. Landfill Technicians Brad… Continue Reading »
The Model 425 Discrete Interval Sampler is a no-purge instrument that allows groundwater sampling from specific depths, without mixing of water from different levels. The stainless steel sampler is pressurized before being lowered to prevent water from entering until the desired zone is reached, pressure is released and the sampler fills with water from the discrete zone. Continue Reading »
What do you do when your Pneumatic Pump is properly connected, yet there is no sample discharge? A simple ‘trick’ is to submerge the sample discharge line into a clear container of water. During the drive cycle you should see bubbles. An aggressive blast of bubbles can mean that there is no water available, while… Continue Reading »
