Large Volume Dispensing

From LEAP

(Difference between revisions)

Revision as of 15:41, 27 February 2009

	Large Volume Dispensing
	Application Type
	SPECIAL
	Application ID

	Description
	Accurate dispensing of solvents at high flow rates

There are three options on the PAL for delivery of large volumes of solvent. Choice will depend on the requirements for delivery rate, delivery volume and accuracy. In each case these pumps can dispense liquid either through PAL side-port syringe, or using the LEAP "Dispense Tool" accessory. The advantage of the latter is that it permits larger flow rates and includes a venting channel to avoid over pressurization in the case of filling sealed vessels.

Common Uses

Dispense liquid prior sample injection and combines the "add liquid" and "inject" steps without user intervention or syringe change.

Typical applications

Dilutions
Derivatisations
Sample spiking
Standard additions

CTC Dilutor

Syringe pump volume range of 0.25 ml to 2.5ml delivery per 2.5 ml syringe cycle. (Optional dilutor syringe 1ml or 5 ml)
Flow Rate Range: 10μl/min - 300μl/min
Wetted parts: All liquids compatible with borosilicate glass, PTFE, Kel-F, FEP

Notes

Requires the addition of a custom macro or cycle to run the appropriate macro
Limited to either a 20 or 80uL sample syringe size with a side port connection or DISPTool
Requires an open AUX Port on the PAL
Requires PAL firmware 2.3 or higher
It can not be used on standalone PAL instruments

CTC Dilutor with DISPTool

CTC Dilutor on PAL

Valco M Series pumps

The patented* Cheminert® M Series liquid handling pump is a syringe-free pump capable of delivering a bidirectional flow to six orders of magnitude. The M Series is a positive displacement pump, which means that it is self-priming and tolerant of any gas which may find its way into the fluid lines. Since there is no separate fill cycle, the pump can be operated continuously, and volumetric capacity is limited only by time.

Notes

Limited to integration with LEAP Shell Software
Limited to either a 20 or 80uL sample syringe size with a side port connection or DISPTool
It can not be used on standalone PAL instruments

Vici Valco Pump

Pump on PAL

Useful links:

Valco website - description of the pump: [1]

Solvent Delivery System (SDS)

Solvent Delivery Module

SDS on PAL

Main Features

4 Solvents can be dispensed
9 Program Steps allow solvents to be added in any order
Software Interface SDS Launchpad
Save/Load Methods
Easy Verification of Downloaded Method via the “Dashboard” feature in SDS Launchpad
Contact Closure Triggered
Runs stored dispense routine
Can be used with Side Port Syringe or DISPTool
May allow single rail to have functionality of dual rail system
Limited to either a 20 or 80uL sample syringe size with a side port connection or DISPTool
It can not be used on standalone PAL instruments
Compatible with all PAL Drivers

Performance Specifications