Automatic Liquid Sampler and Injector
The 6850 automatic liquid sampler
Released: March 2004 6850 Series II GC User Information page 230 of 256
With either turret type, you can use one, two or four solvent bottles for pre- and
post-injection rinses. The choice depends on whether you want to use different
solvents for the two kinds of wash and on the amount of solvent needed for the
samples you intend to run.
How many bottles do I need?
What is my solvent need?
See your 6850 GC User Information CD-ROM for information on how to
estimate the number of samples you can run using 2 mL of a solvent. It is in the
Injection Techniques section.
Good laboratory practice suggests that to reduce the possibility of
contamination, only half the solvent in the 4-mL bottle be used. The injector
will not access the last 2 mL in the bottle.
Solvent levels should always be maintained above the "min solvent level"
marked on the solvent bottles.
Bottle Use
Solvent A Can be the only bottle if solvent usage is less than 2 mL. Either Solvent A or Sol-
vent B must be present.
Solvent A+ Additional solvent A when usage exceeds 2 mL.
Solvent B Can be the only bottle if solvent usage is less than 2 mL. Either Solvent A or Sol-
vent B must be present
Solvent B+ Additional solvent B when usage exceeds 2 mL.
Waste A Empty. Receives waste from Solvent A and A+ washes. Required if Solvent A is
used.
Waste B Empty. Receives waste from Solvent B and B+ washes. Required if Solvent B is
used.
Waste C Empty. Receives waste from sample washes. Always required.
Bottles When to use
1 Your solvent need is less than 2 mL
and
You want to use the same solvent for both pre- and post-injection washes
2 Your solvent need is between 2 mL and 4 mL
or
You want to use different solvents for the pre- and post-injection washes
4 Your solvent need exceeds 4 mL
To Next Page
Loading...
