(L) Manual & Semi-              
    Automatic Gas Inlet
(R) Using Gas Sample Bag
Manual & Semi-Automatic Sampling
for the microFASTTM GC
Sample Inlet Process

Automatic trap loading is included with
every microFASTTMGC. In gas mode, a
sample vacuum pump draws the sample
from the inlet through the trap. In liquid mode,
carrier gas sweeps the flash evaporated
sample through the inlet into the trap.

Sample loading for either gases or liquids
can be manual via a gas tight syringe
(ground glass plunger) or liquid syringe at the
microliter volume level -- or semi-automated
using a gas shutoff valve or liquid sample
introduction valve.

In either case for maximum repeatability,
the GC controls sampling time and inject
time, sample quantity for gases, and,
combined with the liquid syringe volume,
the sample quantity for liquids.
Implementation

Implementation of sampling requires:
- Syringes with 22 gauge needles
- Sample valves  
Parker or equivalent for gases,
Valco or equivalent for liquids
- Bags for ambient pressure samples
- Regulated, pressurized cylinders up to 100 psi
- Interconnecting tubing
(L)  Manual Liquid Injection
(R) Semi-automatic Liquid Injection