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Generally, the cleaning headspace sampler is mainly rinsed or ultrasonically cleaned with pure water, hplc vials manufacturer in china methanol or absolute ethanol. The pollution is severely wiped with a cotton swab. The force is not excessive, avoiding the destruction of the inner surface to produce active spots, and then placing it in an oven at 70 degrees. Dry and dry, cool and sealed.
The headspace sampler cleaning steps are as follows:
1) Set the conveyor temperature to 60 °C and set the sample loop and transfer tube temperature to Off.
2) Once the sample loop and transfer tube temperature has cooled below 60 ° C, turn off the gas to the headspace sampler and remove the vent line from the outlet end.
3) Insert u an empty vial into the conveyor belt.
4) Lift the vial by hand.
5) Use a disposable syringe to draw approximately 6 ml of purified water into the HSS vent tube.
6) Lower the vial and remove it. Repeat steps 3 through 5 (two to three injections will wash thoroughly).
7) Set up an empty vial and lift it up, then use a disposable syringe to inject enough air to sweep the water out.
8) Insert one end of the transfer tube into a beaker or similar container and inject about 10 ml of water from the HSS gas tube outlet using a disposable syringe, then inject about 10 ml of methanol.
9) Use a disposable syringe to inject enough air to purge the water.
10) Reinstall the line and turn on the airflow. Then, switch the HPLC vials hplc vials manufacturer in china to Load-INJ dozens of times to blow all the water and methanol out of the sample valve and line.
This is the end of the introduction of How should the headspace sampler be cleaned? I hope it can help you.
