Remove the Metering Seal

For bio-inert modules use bio-inert parts only!

For biocompatible modules use bio / biocompatible parts only!

Do not mix with bio-inert parts.

When

When poor injection volume reproducibility or when metering device / analytical head is leaking.

Tools required

Qty.	p/n	Description
1	8710-0510	Open-end wrench 1/4-5/16 inch
1	5023-2524	Hex Key Set (part of the G7120-62708 InfinityLab LC Series Tool Kit)
1	01018-23702	Insert tool (for 100 µL seals) OR
1	G4226-43800	Seal insert tool (for 40 µL seals)

Parts required

Qty.	p/n	Description
1	0905-1717	Metering Seal, 40 µL
1	0905-1719	PE Seal
1	G5611-21503	Seal PTFE (Bio-inert) for bio inert solution
1	G7137-20003	Metering seal 1290 Bio 2 mm piston, 40 µL
1	0905-1294	Metering Seal, 900 µL
1	5067-5920	Piston, 40 µL, Zirconium oxide If previous piston is scratched (for 40 µL analytical head)
1	5067-5678	Piston, 100 µL, Zirconium oxide If previous piston is scratched (for 100 µL analytical head)
1	G4267-60462	Piston, 900 µL, Sapphire If previous piston is scratched (for 900 µL analytical head)

In the Local Controller start the maintenance mode and select Service Position.

OR

In the Agilent Lab Advisor software select Service & Diagnostics in the system screen (Tools) > Maintenance Positions > Change Metering Device , click start and wait until the metering device is in maintenance position.
Take the metering device. Push against the rear side of the metering device and rotate a quarter left to release the bayonet lock.
If dirty: Clean the piston with an appropriate solvent. If scratched: Replace the piston by a new one.
Carefully remove the metering seal using the steel side of the insert tool. Clean the chamber with an appropriate solvent and ensure that all particulate matter is removed.

21-Jun-2025