A number of particles and ions of metals in both the chemicals and consistently opposed to the contamination after the use of chemicals to fix maintenance in a timely manner.
A measurement of the particle and metal ion consistently in both the chemical and the contamination of the specimen after the use of chemicals. To fix maintenance in a timely manner.
Measurement of particles and metal ion regularly in both chemical and compared with ที่ชิ้นงาน contamination after the use of chemicals. In order to solve the maintenance in a timely manner