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Application Advice

If you have a separation problem, Varian can help you find a solution by searching our applications database or the chemical literature. Our advice is free of charge.

Please fill in the form below as accurately as possible. The more information we have, the better our advice will be! We suggest that you also fax a copy of your chromatogram, clearly indicating the problem. Fax it to your closest Helpdesk:

Varian Europe Helpdesk	fax no. +31(0) 118 67 13 25
Varian US Helpdesk	fax no. +1-(949)-699-3687

Note: use this form to request advice on compound separation. If you have questions concerning operation or support of Varian chromatographs, please contact your local
Varian Office.

Send this form to the same Helpdesk as you fax your chromatogram to:

Contact Information

All bold fields are required

Your Name:
Function:
Organization:
Department:
Address:
City:
State:
Zip Code:
Country:
Telephone:
Fax:
E-mail address:

Sample information:

Sample matrix..........

Compounds to be quantified:

Compound	concentration	Compound info ( boiling point, solubility or pKa)

Other compounds present that might interfere:

Compound	concentration	Compound info ( boiling point,solubility or pKa)

I want to solve this separation with

HPLC

GC or HPLC

Minimum resolution required:
Between components
Maximum analysis cycle time:

We are looking for a solution that meets the following criteria:

Available Instrumentation:

GC

Injector:

direct

split

splitless

on-column

PTV

other:

Detector:

FID

TCD

ECD

NPD

FPD

other:

HPLC

Isocratic pump

Gradient pump

Detector:

Fluorescence

Electrochemical

Other:

column thermostat

Current method:

GC
Conditions		Column
iso/prog	prog.rate	stat. phase
initial temp	final temp	length
prog.rate	carrier gas	int. diameter
temp 2	pressure/flow	film thickness
prog.rate 2	injector temp.	manufacturer
temp 3	detector.temp	injection volume

Remark:

HPLC
Mobile Phase		Column
initial composition		stat. phase
isocratic time		length
composition		int. diameter
gradient time		particle size
final composition		manufacturer
isocratic end time		injection volume
flow		sample solvent
temperature

Remark:

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