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Type of Pump and Pump Operation

Are there any studies showing that bladder pumps provide better quality VOC data than peristaltic pumps?

How do you deal with VOC volatilization in low water volume wells as a result of temperature increase caused by a pump heating up in the water?

What are the differences in VOC concentrations observed between low-flow and passive diffusion devices?

What do you do with a water table that’s greater than 30 feet but you can’t use a peristaltic pump?

When using 4-inch wells does the well width have an effect on low-flow sampling?

Do bladder pumps need to be replaced, how often, and how can you tell?


Is there a company that makes a bladder pump that will operate in a ½-inch well?

How do you deal with VOC volatilization in low water volume wells as a result of temperature increase caused by a pump heating up in the water?

In a gas field with multiple water wells, there are pumps that are moved between individual wells (we have been using a HydraSleeve) because a dedicated low-flow system is vulnerable to destruction. Is there a way to protect a dedicated low-flow system in such a situation?

What type of pump is recommended for collecting low-flow samples from depths greater than 30 feet?

What types of low-flow pumps are best when testing for VOCs?

Is there a preference in low flow sampling of using peristaltic pumps or bladder pumps?

Can pumps other than bladder pumps be used for low flow sampling? And, do submersible centrifugal pumps affect DO?

Does QED manufacture a portable bladder pump for use in half-inch wells?

Are 12-volt submersible pumps acceptable for low flow sampling?

Is using polypropylene tubing less effective than using Teflon?

I am getting varying results between different brands of sampling equipment.

Which is better Teflon or Poly bladders?

Can you use a peristaltic pump for low flow VOC sampling?

Can you recommend a low flow sampling pump for small diameter (1-2 inch) wells?

How does the 3 cm per second limitation affect water velocity entering pump?

Is sorption a problem using polyethylene tubing for low flow sampling at gasoline hydrocarbon sites?