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Question/Answer

Does environmental express have an application note for recommended use of the SPE disks for Oil and Grease

We have instructions for use with our StepSaver system. Please see http://www.envexp.com/product-manuals and click on \"StepSaver Instructions.pdf\"

Kindly, it is possible to extract Polychlorinated biphenyls (PCBs) from water using G5047MM - SPE - 47mm UltraFlow® C18 Disks

C18 discs are not the ideal extraction medium to use for PCB\'s. We recommend using styrene divinylbenzed (DVB) instead. Please see item G2547.

G5047 DO THIS REQUIRE A PRETREATMENT WITH METHANOL

These disks do need to be activated with methanol prior to extraction

I would like to know the steps you recommend for conditioning of the UltraFlow SPE 47mm Disks with prefilters. We just want to be sure we are conditioning properly.

A downloadable PDF can be found on our website under the Technical Support Tab --> Technical Notes & Articles --> Using UltraFlow Filters and Filter Assemblies. Here is the direct link: http://www.envexp.com/download/techsupport/articles/Using%20UltraFlow%20Filters%20and%20Filter%20Assemblies%202012.06.pdf

I need to get preformance data on the G5047MM disk we use in the lab. Main question is the capcity of the disks.

These discs can extract 1000 mg of a 50/50 mix of stearic acid and hexadecane. Similar numbers can be expected for the capacity of other substances classified as oil and grease. Be advised that the resin used in these dics, C18, is not selective to just one type material that can be extracted. Pesticides, herbicides, surfactants, and various medicinal compounds are among some of the common water borne contaminants that the disc will extract. These will all count against the total capacity of the disc.

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