Last Drop Filter/Sparger - Low Pressure

Last Drop filter/spargers

The Last Drop filter/sparger combines filtration and sparging in a single unit. The PTFE housing contains a mobile phase filter with stainless steel, PTFE, or hydrophobic PE filter element.

The filter/sparger features a PEEK tripod connector which slips into 1.5, 2.2, or 3.5 mm ID solvent lines, and a nut and ferrule for the sparging line.

Spargers have a porosity of 10 microns.

Pore size Maximum
flow rate *
Product No.
PTFE 2.5 µm 1.2 ml/min JR-9000-0602
5 µm 2.6 ml/min JR-9000-0603
10 µm 3.5 ml/min JR-9000-0604
Polyethylene 10 µm 11 ml/min JR-9000-0604H
Stainless 2 µm 28 ml/min JR-9000-0640
5 µm 30 ml/min JR-9000-0641
10 µm 30 ml/min JR-9000-0642

* Flowrate measured with methanol/water (1:1), ultrasonic degassed, helium sparging to prevent regassing.


  • Materials:
    Body PTFE
    Frits PTFE
    Type316 SS
    Stepped tubing connector PEEK
    Nut PEEK
    Ferrule ETFE
  • Stepped tubing connector for 1.5, 2.2, and 3.5 mm ID tubing
  • 1/4-28 nut with ferrule for 1/8" OD tubing



  • We recommend metal free PTFE filters for sensitive biochromatography applications where metal surfaces may corrode or itneract with samples.