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624 type phases
”
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Resolution of 2/4-chlorotoluene
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TBA & MTBE resolution (m/z 59)
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J&W type: Benzene & 12DCA (m/z 62)
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GC: C12DCE & 22DCPropane
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Rxi-624Sil MS designed not to have these disadvantages
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phenyl type phases
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Includes HP-VOC, Rtx-Volatiles, Rtx-502.2, VOCOL
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Poor resolution of bromomethane & chloroethane
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Water/Methanol: results in poor gas peak shape
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Plus: Generally lower bleed & withstand small leaks
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VRX
type phases
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Chlorobenzene-D5 (IS) / 1112TCA resolution
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Bleed similar to 624, VMS
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GC: Poor resolution of the trihalomethanes
Rtx-VMS advantages over other phases