Welker Crude Oil Samplers provide proven accuracy to meet API guidelines. In addition to ship loading and off-loading applications, these samplers are used at wellheads and pipeline custody transfer points. The sampler's patented true isokinetic collection head voids itself 100% prior to sampling, ensuring that the sample is consistent with the stream accuracy. The crude can then be accurately analyzed to determine BS&W, API gravity, shrinkage and chemical composition. Welker offers a broad selection of components, including various samplers, controllers, containers, and mixing skids.