281.491.2331 13839 West Bellfort Street Sugar Land, TX
281.491.2331 13839 West Bellfort Street Sugar Land, TX
ISO 9001:2015
U.S. Patents
90 + U.S. Patents
Since 1954
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Crude Oil Sampling


For accurate basic sediment and water (BS&W) measurement, there’s nothing more critical than a uniform composite sample. Minimize measurement errors and the resulting financial discrepancies using the Welker MSTCC Laboratory Mixing Skid. The MSTCC is a stationary closed loop mixing system that evenly disperses and distributes stratified composite samples for representative subsamples. Install the MSTCC […]


Confirm actual sample grab size from one convenient spot. A valuable addition to your liquid sampling system, the Welker Checkpoint™ Sample Bite Verification Panel makes sampler performance monitoring easy. A pressure switch and relief valve on the panel provide an additional layer of system protection.

Plug & Purge™

The first of its kind, the Welker Plug & Purge™ Automatic Purging System meets the latest recommendation of API 8.2 and ASTM D4177. Welker applied 25 years’ experience purging probe samplers to design the Plug & Purge™, which safely and effectively purges trapped liquid product from the sampler to the sample container. Incorporate the Plug […]
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