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DPX stands for Disposable Pipette EXtraction. It
is a patented solid-phase extraction (SPE) device that is unique from
all other SPE devices. DPX uses pipette tips that incorporate loosely
contained sorbent material that is mixed with the sample solution. This
unique mixing provides numerous advantages:
• No conditioning steps are necessary
• Minimal elution solvent volumes
• Rapid extraction times (less than 3 minutes/sample)
• High extraction efficiencies
• Easy to perform extractions
What does this all mean?
• Lower costs
• Higher throughput
• Environmentally friendly
• Minimal training required |
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A rapid cleanup method was used for analysis of cyanuric acid or melamine in milk. A DPX-WAX tip was used by simply aspirating 500 uL of a milk solution (100 uL whole milk with 400 uL of 50/50 acetonitrile and water), mixing with the sorbent, and dispensing a clean colorless solution.
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This video demonstrates a basic chromatography experiment that can be performed readily in most chemistry labs. The lab involves separation of the 2 dyes that make up the purple color in "grape koolaid".
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Advantages of Using DPX Tips |
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Advantages of using DPX tips include reducing solvent usage, reducing solvent waste and increasing laboratory throughput. DPX technology is not only "greener", but it also saves money. For analysis of pesticides in fruit and vegetables, click here to find out how one laboratory has saved time and money using DPX tips.
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This video shows a rapid "cleanup" method using a DPX-WAX (weak anion exchange sorbent) tip. An acetonitrile solution of protein precipitated whole blood is rapidly processed in 60 seconds by aspirating the solution into the DPX-WAX tip, mixing the solution with the sorbent by aspirating air, and then dispensing the "clean" solution back into the tube. Note the comparison of with and without "cleanup" at the end of the video.
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