Replace the syringe filter

Replace the 0.22 µm syringe filter on your dilution dispenser at the start of each day.

Your dilution dispenser dispenses through a 0.22 µm syringe filter. Replace it at the start of each day, and sooner if it squeaks or you need to press harder to dispense. A filter typically clogs after 200–500 mL, or 20–50 dispenses of 10 mL.

What you need

• A new 0.22 µm syringe filter.

• An empty vial.

Step by step

1

Remove the old filter

Unscrew the old syringe filter from the Luer lock adapter on the ejection unit.

Be careful not to unscrew the Luer lock adapter itself from the ejection unit.

2

Fit the new filter

Screw the new syringe filter onto the Luer lock adapter.

3

Check the volume

Dispense once and discard it. The first volume is often wrong. Dispense again and confirm that it fills the vial to the 10 mL mark.

Consult the included Hirschmann manual for details on operation, safety and troubleshooting.