How do you clean the air filter of a Thermo Scientific mass spectrometer?

Thermo Scientific mass spectrometers are also known as mass spectrometers
.
Instruments
for separating and detecting different isotopes.
That is, according to the principle that charged particles can be deflected in the electromagnetic field, according to the mass difference of material atoms, molecules or molecular fragments, a class of instruments
that separate and detect the composition of substances.
Thermo Scientific mass spectrometers are divided into isotopic mass spectrometers, inorganic mass spectrometers and organic mass spectrometers
according to the scope of application.
According to the resolution ability, it is divided into high-resolution, medium-resolution and low-resolution mass spectrometers; According to the working principle, it is divided into static instruments and dynamic instruments
.
Cleaning the mass spectrometry transmission lens first needs to shut down the mass spectrometer, the whole process needs to wear clean powder-free gloves, carefully take out the mass spectrometry lens according to the operating procedures of the instrument, gently wipe the lens with dust-free paper dipped in methanol (chromatographic pure), pay attention to the need to clean
the inside of the lens hole at the same time.
Similar to cleaning the ESI ion source, the lens is placed in a clean beaker, and the corresponding solvent is selected for ultrasonic cleaning for about 30 minutes according to the contamination of the lens, such as methanol, 50% methanol or other organic solvents
.
Contact damage between the lens and hard objects should be avoided, and contact with inorganic acids and alkalis should be avoided, otherwise there is a possibility
of corrosion of the lens.
After ultrasonic cleaning, take it out to dry or blow dry with nitrogen, and install it back on the mass spectrometer according to the
correct process.
Cleaning of air filter: Generally, mass spectrometers are equipped with an air filter, which can effectively filter dust particles in the air, which needs to be taken out regularly and cleaned with clean water and dried before being installed back
.
If it is too dirty to clean or damaged, you need to replace the filter with a new one
.
If the air filter is not cleaned or replaced for a long time, the accumulation of dust will lead to blockage, which will affect the heat dissipation of the mass spectrometer circuit board and other components, and in severe cases, it will affect the collection
of data.
Although some mass spectrometers are equipped with cooling circulating water systems, they also need to clean or replace the air filter and water filter screen regularly
.