Idex Inline Micro Filters

Inline MicroFilters


  • 100% biocompatible PEEK™ polymer option available
  • As low as 109 nL void volume
  • Two versions: direct connect 1/32” OD tubing or use MicroTight® tubing sleeves for 70 – 520 μm OD capillary tubing


Upchurch Scientific® Inline MicroFilters protect your column from particles originating in the mobile phase or sample, or from pump seal and sample injection valve wear. These filters have a 0.006” (150 μm) thru-hole. Choose the M-520 with a 0.5 μm 100% PEEK frit or the M-135 1 μm stainless steel filtering screen version, to connect to capillary tubing using the MicroTight tubing sleeves. You may also directly connect 1/32” OD tubing using the M-525 which contains a 0.5 μm PEEK frit.




  • The Mini MicroFilter and Inline MicroFilter can be used to pack capillary tubing. Simply place one of these filters on the effluent side of the capillary tubing, then slurry pack. Once packed, place a filter at the head of the tubing. This creates a reliable capillary column without fusing the silica to make frits or pressing filter paper inside the capillary tubing.


Serial Number



Filter End Fitting 0.5µm PEEK for MicroTight Tubing Sleeve Single


Filter End Fitting 0.5µm PEEK for MicroTight Tubing Sleeve 10 Pack


Inline MicroFilter Assembly 1µm, Stainless Steel- 5 Pack Single


Filter End Fitting, 0.5µm PEEK- for 1/32" OD Natural - Single


Inline MicroFilter Assembly 5 Fittings


Inline MicroFilter Kit PEEK 0.5µm