To keep the pistons wet and rinse the piston seals, the pump has an active piston seal wash system (seal wash system). Piston seal washing prolongs the lifetime of the pistons and seals by preventing crystallization and particle deposits on the piston surfaces and seals, which may otherwise damage the pistons and seals.

The picture shows the flow path through the seal wash system.

Flow path through the seal wash system (left: isocratic pump, quaternary pump; right: binary pump, dual pump)
Figure: Flow path through the seal wash system (left: isocratic pump, quaternary pump; right: binary pump, dual pump)

No.

Description

1

Seal wash line from autosampler

2

Seal wash pump (peristaltic pump)

3

Peristaltic tubing (PharMed™ tubing)

4

Pump heads

5

Seal wash detector (drop detector)

6

To waste