Needle cleaning
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As for the chromatography syringe, the needle we use becomes unable to pull the needle core after a period of time. Should I clean it with alcohol after each use? Or is there any other good way to prevent this phenomenon from happening to the needle? Thank you!
This requires daily maintenance. The needle must be cleaned after each sample is done to prevent the needle from sticking. In addition, excessive force may be used during normal use and the needle core may be bent, so the needle core may not feel smooth when used later.
I agree with the second floor's point of view. After analyzing to ensure that the data is accurate, it is necessary to clean and cultivate it.* The author's suggestion is very good, especially for automatic injection needles, which are very expensive. It is recommended that analysts should save money. * happy new year
No matter what sample is put in, it needs to be cleaned to develop good habits. When the sample is special, the needle needs to be pulled out after cleaning.
It is necessary to choose a suitable solvent for needle washing. Although ethanol is more common, there are exceptions, so the needle washing solvent should be selected according to the specific sample.
No matter what sample is put in, it needs to be cleaned to develop good habits. When the sample is special, the needle needs to be pulled out after cleaning.
Clean with C, or clean with a solvent that dissolves the sample
Our school's laboratory uses distilled water for cleaning because it is used for experiments, so the requirements are not high. If it is washed with ethanol, there will be an additional peak of ethanol, which is not good for the test data. Wash after each binding.
After each sample preparation, the needle must be cleaned with acetone to prevent the needle from sticking.
After use, it is best to clean the needle in an ultrasonic bath containing organic solvents such as alcohol or acetic acid, and then take it out for use.