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With so many features and designs, how do you choose the right inlet liner for your analysis? Each style of inlet liner offers a different range of benefits – to get the best performance, the key is to choose a liner that is well-suited for your injection type, sample, and budget. Below is a basic overview of liner styles:
Straight
Example: AG2-0A00
Function: Low surface area for less activity
Recommended for: Volatiles
Advantages
Disadvantages
Glass Wool
Example: AG0-4656
Function: Traps non-volatiles; mixes sample; vaporizes sample above the column
Recomended for: Dirty samples, volatiles, high initial oven temperatures
Advantages
Disadvantages
Example: AG2-0A11-05
Function: Traps non-volatiles; mixes sample; vaporizes sample above the column
Recomended for: Dirty samples
Advantages
Disadvantages
Example: AG2-0A03-05
Function: Keeps glass wool in place; wipes syringe needle clean
Recomended for: Pressure pulsed injections, dirty samples, volatiles,
high initial oven temperatures
Advantages
Disadvantages
Taper / Gooseneck
Example: AG0-8173
Function: Limits the expansion of the solvent to the inlet
Recomended for: Water injections
Advantages
Disadvantages
Example: AG2-0A10-05
Function: Directs flow onto column; low surface area
Recomended for:Pesticides (without wool), semi-volatiles (with wool)
Advantages
Disadvantages
Direct Connect Liner
Examples: AG2-0A50-05
Function: Connects directly to column to aid transfer of analytes
Recomended for: Trace analysis, splitless injections, separation from
solvent peak (with top hole), aqueous samples (with bottom hole)
Advantages
Disadvantages
Internal Diameter (ID)
Example: AG0-4654
Function: Small internal volume and surface area; restricts sample diffusion
Recomended for: Headspace , purge and trap, or gas injections
; active
samples with low expansion solvents
Advantages
Disadvantages
Outer Diameter (OD) /
Splitless Liner
Example: AG0-8499
Function: Fits tightly inside the inlet; limits sample contact with inlet components
Recomended for: Splitless injections of active compounds
Advantages
Disadvantages
Cup Liner
Example: AG0-4648
Function: Cup traps non-volatiles but has lower surface area than wool; vaporizes
sample above the column
Recomended for: Multiple or large volume injections, active samples, dirty samples
Advantages
Disadvantages
A wide variety of liners is available. If you need additional assistance, we’re here to help!