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Cytiva Whatman™ Mini-UniPrep™ Syringeless Filters with Preslit Septa

Processes sample loads in one-third the time. Whatman™ Mini-UniPrep™ Syringeless Filters with Preslit Septa provide a faster and easier way to remove particulates from samples being prepared for HPLC and UHPLC analysis.

Supplier:  Cytiva US203NPEORG

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Catalog No. 09-923-112



Eliminate coring problems associated with repeated automated sampling. Available in standard translucent. Use with standard robotics on HPLC instruments with sensitive needles, allowing for higher throughput.


  • For high-throughput automation
  • Slit septum cap enables Mini-UniPrep use with current robotics on HPLC instruments for high throughput automation
  • Durable yet flexible slit septum cap has been specially designed for instruments with sensitive sampling needs
  • Sample evaporation is minimal
  • Increase lab productivity and efficiency by processing samples in one-third the time of conventional syringe filters Consist of a 0.5mL capacity chamber and plunger with filtration membrane at one end and a preattached cap/septum at the other
  • Designed to fit into any autosampler that accommodates 12 × 32mm vials, or pierce septum with needle to draw sample off for manual injection into an analyzer


Nylon (NYL)

  • Sample type: Inherently hydrophilic, aqueous/organic samples in 3 to 10 pH range
Polytetrafluoroethylene (PTFE)
  • Sample type: Hydrophobic, for samples >50% organic solvents
Polyvinylidene Difluoride (PVDF)
  • Sample type: Aqueous/≤60% organic solvents-low non-specific protein binding media


Do not overfill filter unit or compress the device at an angle before the airtight seal is made. Liquid could escape from air vent hole, resulting in sample loss or personal injury.



  • Routine HPLC/UHPLC analysis
  • Composite assays
  • Content uniformity
  • Protein precipitation
  • Solubility testing
  • Dissolution testing
  • Sample filtration
  • Standard robotics on HPLC instruments with sensitive needles, allowing for higher throughput
  • Light sensitive samples
  • Ion chromatography




Routine HPLC/UHPLC analysis; Composite assays; Content uniformity; Protein precipitation; Solubility testing; Dissolution testing; Sample filtration; Standard robotics on HPLC instruments with sensitive needles, allowing for higher throughput; Light sen
Syringeless Filter
0.2 μm