Filter/Spargers for Low Pressure
This filter/sparger combines filtration and sparging in a single unit, with our Last Drop design. It features a PEEK tripod connector for the solvent line, and a nut and ferrule for the sparging line.
* Flowrate measured with methanol/water (1:1), ultrasonic degassed, helium sparging to prevent regassing.
Overview
The Last Drop filter/sparger combines filtration and sparging in a single unit. A flat filter element sits parallel to the bottom of the reservoir, ensuring all but the last 2% of mobile phase is filtered without drawing air into the system.
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 mm, 2.2 mm, or 3.5 mm ID solvent lines, and a nut and ferrule for the sparging line. The spargers have a porosity of 10 microns.
Materials:
| Part | Material |
|---|---|
| Body | PTFE |
| Frits | PTFE, PE 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
TECH TIP
We recommend using metal-free PTFE filters for sensitive biochromatography applications where metal surfaces may corrode or interact with samples.
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