Download ppt - Valve Washes LEAP Technologies. VSWII vs Active Wash LEAP VSW II CTC Active Wash System Number of solvent 42 Pumping system Syringe pump Solenoid Pump

Valve WashesValve Washes

LEAP TechnologiesLEAP Technologies

VSWII vs Active WashVSWII vs Active Wash

LEAP VSW II LEAP VSW II CTC Active CTC Active Wash System Wash System

Number of Number of solventsolvent

44 22

Pumping Pumping systemsystem

Syringe pumpSyringe pump Solenoid Solenoid PumpPump

Maximum Maximum PressurePressure

60 psi60 psi ~15 psi~15 psi

Able to wash Able to wash looploop

YesYes NoNo



Syringe wash Syringe wash solventsolvent

To wasteTo waste To InjectorTo Injector

Flow rate Flow rate rangerange

0-15ml/min0-15ml/min Fixed 4.2 Fixed 4.2 ml/minml/min

TriggeringTriggering Contact Contact closureclosure

PwrOut 1 & 2PwrOut 1 & 2

Programming Programming PALPAL

Via Standalone Via Standalone GUI / Analyst GUI / Analyst DriverDriver

macro/cyclemacro/cycle



Usable Usable standalonestandalone

YesYes NoNo

Variable flow Variable flow raterate

YesYes NoNo

No. of step No. of step programmablprogrammablee

99 N/AN/A

Syringe wash Syringe wash as standardas standard

NoNo YesYes



Standalone Standalone modulemodule

YesYes NoNo

Requires Requires custom custom cycles/macroscycles/macros

NoNo NoNo

Multiple units Multiple units on one PALon one PAL

YesYes NoNo

Active Wash StationActive Wash Station

Active Wash In-SituActive Wash In-Situ

Active Wash Features (1)Active Wash Features (1)

• The Active Wash Station consists of two self priming micro The Active Wash Station consists of two self priming micro pumps mounted underneath the valve drive.pumps mounted underneath the valve drive.

• A special needle guide assembly and tubing set including A special needle guide assembly and tubing set including check valve.check valve.

• The IN port of the pumps are connected to the wash solvent The IN port of the pumps are connected to the wash solvent bottles of the Fast Wash Station.bottles of the Fast Wash Station.

• The solenoids are powered using Pwr-Out1 and Pwr-Out2 The solenoids are powered using Pwr-Out1 and Pwr-Out2 (meaning that this can not be used with a Fast Wash (meaning that this can not be used with a Fast Wash Station).Station).

• The OUT ports are connected to the waste port of the The OUT ports are connected to the waste port of the injection valve.injection valve.

• The flow to waste is controlled by a non-return/ pressure The flow to waste is controlled by a non-return/ pressure relief valve in the waste line.relief valve in the waste line.


• The Active Wash Station does not require special macros or The Active Wash Station does not require special macros or cycles. cycles.

• The Injector, Wash1, Wash2 and Waste are all trained to the The Injector, Wash1, Wash2 and Waste are all trained to the same X, Y, Z pointssame X, Y, Z points

• After sample loading and switching of the valve the pumps After sample loading and switching of the valve the pumps are activated with a fixed flow of approx. 70µl/sec. or are activated with a fixed flow of approx. 70µl/sec. or 4.2ml/min.4.2ml/min.

• Cleaning solvent flows through the valve groove, the inside Cleaning solvent flows through the valve groove, the inside of the needle seal and is aspirated with the injection of the needle seal and is aspirated with the injection syringe. syringe.

• After the selected syringe cleaning strokes the injection After the selected syringe cleaning strokes the injection syringe needle is lowered and the remaining sample syringe needle is lowered and the remaining sample between valve waste port and check valve is flushed.between valve waste port and check valve is flushed.


• As with the regular Fast Wash Station two different solvents As with the regular Fast Wash Station two different solvents can be used.can be used.

• Wetted parts of the new Active Wash Station are PTFE and Wetted parts of the new Active Wash Station are PTFE and Perfluor. Perfluor.

• The Active Wash Station setup enables entire sample flow The Active Wash Station setup enables entire sample flow path cleaning in backflush direction and rinses valve path cleaning in backflush direction and rinses valve engravings, needle seal and syringe at the same time. engravings, needle seal and syringe at the same time.

• It can be ordered optionally together with new instruments It can be ordered optionally together with new instruments or as upgrade to existing HTS PAL / HTC PAL’s.or as upgrade to existing HTS PAL / HTC PAL’s.

VSW IIVSW II

Tee Piece AssemblyTee Piece Assembly

• Designed for positive Designed for positive pressure washingpressure washing

• Allows valve togglingAllows valve toggling• Entire sample flow Entire sample flow

path can be washedpath can be washed• Low maintenance Low maintenance

seals (and easy to seals (and easy to change)change)

VSW II FeaturesVSW II Features

• Program and forgetProgram and forget• Triggers via contact closureTriggers via contact closure• Choice of any of 4 solvent in up to 9 Choice of any of 4 solvent in up to 9

stepssteps– For each step you can specifyFor each step you can specify

•Flow rate Flow rate •VolumeVolume

• Can generate >60 psiCan generate >60 psi• Can be used to clean the loopCan be used to clean the loop