Competitor Comparison: Class 2 - Mix A Residual Solvents for USP Water-Soluble Articles

PeakstR (min)Conc.
(µg/mL)
1.Methanol2.28125.00
2.Acetonitrile4.0093.42
3.Dichloromethane4.3135.00
4.trans-1,2-Dichloroethene4.7987.83
5.cis-1,2-Dichloroethene7.0287.83
6.Tetrahydrofuran7.7065.75
7.Cyclohexane8.70832.33
PeakstR (min)Conc.
(µg/mL)
8.Methylcyclohexane14.0999.83
9.1,4-Dioxane15.0543.17
10.Toluene22.0187.42
11.Chlorobenzene26.5703.00
12.Ethylbenzene26.8373.07
13.m-Xylene27.14710.85
14.p-Xylene27.1472.53
15.o-Xylene27.9271.63
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GC_PH1161
ColumnRxi®-624Sil MS, 30 m, 0.32 mm ID, 1.80 µm (cat.# 13870)
SampleResidual solvents class 2 - mix A (cat.# 36271)
Diluent:Water
Injectionheadspace-loop split (split ratio 5:1)
Liner:1 mm split (cat.# 20972)
Headspace-Loop
Inj. Port Temp.:140 °C
Instrument:Tekmar HT3
Inj. Time:1 min
Transfer Line Temp.:110 °C
Valve Oven Temp.:110 °C
Sample Temp.:80 °C
Sample Equil. Time:60 min
Vial Pressure:10 psi
Pressurize Time:0.5 min
Pressure Equilibration Time:0.05 min
Loop Pressure:5 psi
Loop Fill Time:0.1 min
Oven
Oven Temp.:40 °C (hold 20 min) to 240 °C at 10 °C/min (hold 20 min)
Carrier GasHe, constant flow
Linear Velocity:35 cm/sec
Dead Time:1.45 min @ 40 °C
DetectorFID @ 250 °C
Data Rate:5 Hz
InstrumentAgilent/HP6890 GC
AcknowledgementTeledyne Tekmar
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