Home      Oil and Grease EPA 1664

We now offer two styles of 47mm StepSaver. The (G1047-1L) is designed for use with 47mm solid phase extraction disks from 3M. A 90mm version of this style StepSaver is also available for SPE applications requiring a larger filtration area. We also have a new StepSaver package which uses our UltraFlow filter disks and disposable filter funnels (G5047).

Both StepSaver styles save time and simplify the disk method for oil and grease extraction (EPA Method 1664). StepSavers are unique in two ways. First, the collection vessel is located outside the filter flask or manifold and uses a vacuum bridge to connect it to the vacuum source. Second, a luer adaptor is located in the solvent collection arm that allows the use of an in-line Na2SO4 drying cartridge (Catalog #G1065). These features allow the analyst to collect the solvent with eluted oil and grease directly into a preweighed collection flask with no disassembly or reassembly of the glassware. The eluent is already dried with Na2SO4 and can be directly evaporated to obtain the weight of the extracted oil and grease.

A two-way, 120°, Teflon stopcock allows the analyst to choose the direction of filtrate flow. This design prevents accidental sample loss as the stopcock cannot be opened to both channels at the same time. The 40/35 ground glass joint on the bottom of the apparatus allows attachment to a filter manifold or filtration flask.