Welcome to the New Restek.com! Take a tour of the new site and feel free to send us your feedback.
Your web browser will no longer be supported by Restek.com as of 30 June 2021.
To avoid any interruption in access or functionality, install a current-generation web browser now. Learn more.

USP <467> Residual Solvents on Rtx-1301 (G43) by Static Headspace

GC_PH00810
PeakstR (min)Conc.
(µg/mL)
1.Dichloromethane 5.11012.0
2.Chloroform9.2851.2
3.Benzene 11.1730.04
4.Trichloroethylene 14.6471.6
5.1,4-Dioxane17.4367.6
ColumnRtx-1301 w/5m Integra-Guard, 30 m, 0.53 mm ID, 3.00 µm (cat.# 16085-126)
SampleUSP <467> Calibration Mixture #5 (cat.# 36007)
Diluent:DMSO
Conc.: To each 22 mL headspace vial 5ml water, ~ 1.0g of sodium sulfate and 100µL of stock standard were added.
Injectionheadspace-loop split (split ratio 2:1)
Headspace-Loop
Inj. Port Temp.:180 °C
Instrument:Teledyne Tekmar HT3
Inj. Time:1.0 min
Transfer Line Temp.:150 °C
Valve Oven Temp.:150 °C
Standby flow rate:10 mL/min
Sample Temp.:80 °C
Platen temp equil. time:2.0 min
Sample Equil. Time:15.0 min
Mixer time:2.0 min
Mixing level:5
Mixer stabilize time:0.5 min
Vial Pressure:15 psi
Pressurize Time:2.0 min
Pressure Equilibration Time:0.5 min
Loop Pressure:5 psi
Loop Fill Time:2.0 min
Loop fill equil. time:0.5 min
Oven
Oven Temp.:40 °C (hold 20 min) to 240 °C at 25 °C/min (hold 10 min)
Carrier GasHe, constant flow
Flow Rate:5 mL/min
DetectorFID @ 250 °C
Make-up Gas Flow Rate:45 mL/min
NotesFID conditions:
hydrogen flow: 40 mL/min.
air flow: 450 mL/min.