Inlet Systems

Split/splitless capillary inlet

Table 6-1. Suggested Initial Column Pressures (kPa) for

Various Capillary Column Bores and Lengths

Nominal

 

Nominal Length (m)

 

 

 

 

 

 

ID (mm)

12

25

50

 

 

 

 

 

 

0.20

135

223

347

 

0.32

45

82

137

 

0.53

11

23

42

 

It must be emphasized that values in this table are recommended as starting points only!

Values listed are independent of carrier gas used.

It is important to note that flow settings made for one particular column are not necessarily correct for any other column, or for every application. Column flow rate should be verified, and adjustments made as necessary, whenever the column or other parts of the flow system are changed.

Split sampling

WARNING In performing split sampling, when using hazardous chemicals, and/or H2 carrier gas, effluent from the split vent should be vented to a fume hood or appropriate chemical trap.

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