Use of sample loops with micropacked columns in gas chromatography

Process gas chromatography

“…Gases are usually metered by an external sample loop; liquids by the volume of an internal hole or channel in the usually designed to meet General Purpose Classification or by modification with air purging, Class I, Groups C and D, Division Reliability. The entire system should operate continuously and without maintenance for periods of at least [4][5][6] months and preferably a year. Hence, a premium on simplicity, ruggedness, and dependability for all components.…”

“…o.d.) packed with ultra fine diameter substrate and special lowvolume detectors (4). Special low-volume valves are also required to obtain optimum performance.…”

“…___extra copies of the course manual (1-9 copies, $9.00 each; 10-49, $8.00 each; 50 or more, $7.00 each). Sequential 4 system levels (manual to computer controlled) 25 ence-free measurement is produced regardless of the presence of any other chemical compound which is likely to be present in the atmosphere. This could include literally any other hydrocarbon found in a petrochemical plant or refinery.…”