30 Q-Discs
Q-Disc Comparison Guide
Select the appropriate Q-Disc for sample. Suggested sample types are listed below but are not the samples
applicable for each Q-Disc.
Analysis Type Suitable For Sample Types Q-Disc Caution
Gas Chromatography
or Gravimetric
Dry samples Environmental samples including:
Solids & PUF lters
Total unbound fat food samples
Plastics
C1 or C3 Do not use if using water
for the extraction solvent
Wet or dry samples Wet, oily, or tar-like soil samples
Fine powder food samples that do
not drain with C1 or C3
C4 or C7
Coarse samples (less than
270 mesh
Use for samples that do not drain
with the other C line lters
C9 Do not use if using water
for the extraction solvent
Use as support disc for
M2
Liquid
Chromatography
Dry samples Pesticide residue in food
applications
M1 Do not use if using water
for the extraction solvent
Do not use for wet
samples
Wet or dry samples
Samples less than or equal
to 5 g
M2 Always run with textured
side up in Q-Cup
Use C9 support below wet
samples
Do not heat above 100 °C
Only use with ACN,
alcohols, acetone, & H
2
O
Wet samples
Samples more than 5 g
G1 Always sandwich with C9
Q-Discs
NOTE
Q-Discs are listed in order of increasing porosity.
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