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Whatman™ Mini-UniPrep™ Amber Syringeless Filters

Produced with the same colorant used in pharmaceutical containers

Manufacturer:  Whatman™ UN203APUNYL

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Catalog No. 09-924-585

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Provide all-in-one filtration without photodegradation of light-sensitive samples.

  • Amber colorant prevents photodegradation of light-sensitive samples
  • Translucent amber chamber and plunger enable easy visual inspection
  • Use with any compound that requires protection from light, such as catecholamines or vitamins
  • 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
  • Can be used either manually or with compressor
  • Designed to fit into any autosampler that accommodates 12 x 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
  • , chemically aggressive solutions
Polyvinylidene Difluoride (PVDF)
  • Sample type: Aqueous 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
  • Light sensitive samples
  • Ion chromatography


Meet USP specifications for light resistance.

Description & Specifications


Syringeless Filter
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