Do you know how to maintain and clean the automatic headspace sampler? Let's take a look at it today.

maintenance of automatic headspace sampler:

1. Liner: Liner GC It mainly functions as a sample evaporation chamber. The sample evaporates in the liner and is brought into the gas phase, which can be divided into living and non-living, or split/non-split. No shunt, shunt, direct injection straight, connect, focus, PTV, etc.

Irregular replacement or incorrect use will lead to peak deterioration, solute discrimination, poor reproducibility, sample decomposition, ghost peaks and other results. The maintenance of the liner is mainly cleaning, siliconization of glass wool and rational use.

2. The spacer: mainly plays the role of sealing the injection, cleaning the injection needle, and the service life of the spacer can reach more than 100 times. Different manufacturers have different materials, such as the life of the spacer can reach more than 400 times, and the red silicone spacer is generally 100 times.

If the injection port pressure drops, you can check whether the gasket is severely worn and whether the seal is deteriorated, and you can replace it if necessary. Gasket debris can cause bottom growth and may contaminate the lining. If the column is blocked, it should be replaced frequently, and there is no need to wait until it must be replaced.

Many color friends in the installation and replacement of the spacer is usually too tight, which will lead to excessive contraction of the spacer. When it becomes hard, the gasket is prone to debris during sampling, and the service life is greatly reduced. Generally, it is slightly tight without air leakage.

Pure water is mainly used for cleaning automatic headspace sampler, methanol or absolute ethanol cleaning or ultrasonic cleaning. If the pollution is serious, you can gently wipe with a cotton swab. Do not use excessive force to avoid damage to the active points on the inner surface. It was then placed in an oven at 70 degrees to dry, then dried, cooled and sealed.