Understand the maintenance and maintenance of the instrument is a basic skill that users should have, because the maintenance and maintenance of the instrument is related to the integrity of the instrument, the usage rate and the success rate of the experimental teaching. Therefore, the maintenance and maintenance of the instrument can be described as In experiments and production, some instruments used in the production of instruments, once absorbed by dust and dirt, not only affect the performance of the instrument, shorten the service life, directly affect the experimental results, but also affect the aesthetics and the physical and mental health of the experimenter. Therefore, dust removal and cleaning are the highlights of instrument maintenance. (1) Dust removal Most of the dust is tiny dust particles with a small amount of static electricity, which often float in the air, move with the airflow, and the object will adhere to it, almost no holes. Dust attached to the model specimen will affect its color. Dust on the moving parts will increase the wear and tear on the electrical parts. If there is dust on the electrical appliance, it will cause short circuit and electric leakage. The dust on the precious precision instrument will cause the instrument to be scrapped. There are many ways to remove dust, mainly depending on the condition of the dust-attached surface and the degree of dust adhesion. In the dry air, if the dust is less or the dust has not been wetted into a patch, use a dry cloth wipe, a towel brush, a soft brush, etc. to remove dust from the general instrument;唧, ear-washing air pump blowing dust, dust can also be vacuumed; dust in the diagonal, seam can combine the above several methods to remove dust. However, for valuable precision instruments, such as optical instruments, instrument heads, etc., dust removal by the above method will also damage the instrument. In this case, special dust removal tools should be used to remove dust, such as wiping with lens paper and wiping cotton balls with alcohol. When the air is damp and the dust has formed into a scale, the dust should be wiped with a damp cloth. The gray scale in the diagonal and seam can be removed with a sharpened soft strip, then wiped with a damp cloth, but the surface is faded. Do not wipe with a damp cloth. If the dirt is not easily wiped clean, wipe it with a cotton ball dampened with alcohol or wash it. (2) Cleaning The instrument will be stained with greasy, glue, sweat and other dirt during use. It will cause rust and mildew spots when stored and stored inadvertently. These dirt will have extremely bad effects on the life and performance of the instrument. The purpose of cleaning is to remove dirt from the instrument. Generally, there are two types of methods for cleaning the instrument. One is mechanical cleaning, that is, cleaning by shovel, scraping, brushing, etc.; the second is chemical cleaning, that is, cleaning with various chemical decontamination solvents. The specific cleaning method depends on the condition of the dirt adhering surface and the nature of the dirt. The cleaning methods for several common instruments and different material parts are described below. 1, glassware cleaning Glassware is divided into general glassware and special glassware. There are two types of dirt on glassware. One type can be cleaned with water, and the other type must be cleaned with a cleaning agent or special detergent. of. In the experiment, the used utensils should be cleaned immediately, regardless of the type of dirt attached to the glassware. Glassware filled with sugar, salt, starch, mud, alcohol, etc., can be washed with water to achieve cleaning purposes. It should be noted that if the attached dirt is already dry, the vessel may be soaked in water for a period of time, and then brushed with a brush until it is washed. Glassware is stained with oil or animal oil, and can be washed with detergent, detergent, detergent, etc. Brush with a brush when cleaning, and use this detergent to clean glassware with organic oil. After the glassware is washed with detergent, it is also rinsed with water. For glassware with tar, bitumen or other high molecular organics, it should be cleaned with organic solvents such as gasoline and benzene. If it is still difficult to wash, the glassware can be immersed in an alkaline detergent for a period of time, and then washed with a solution of sodium carbonate, sodium hydrogencarbonate, sodium hydroxide or sodium phosphate at a concentration of 5% or more, or even heated. . In chemical reactions, metals, oxides, acids, alkalis, and the like are often attached to the walls of glassware. When cleaning, according to the characteristics of the dirt, use strong acid, strong alkali to clean or use neutralization chemical reaction to descale, and then rinse with water. When using acid and alkali cleaning, special attention should be paid to safety. The operator should wear rubber gloves and protective glasses. Use tools such as tweezers and clips when handling. Mildew on the surface of optical glass is a common phenomenon. When the optical glass is moldy, the light scatters on its surface, making the image unclear. In severe cases, the instrument will be scrapped. Most of the causes of optical glass mold are due to the presence of microbial spores on the surface. When the temperature and humidity are appropriate, and there is a desired "nutrient", it will grow rapidly and form mildew. It is especially important to make mold and stain resistant to optical glass. Once mold spots are generated, it should be cleaned immediately. To eliminate mildew, the cleaning fungus can be cleaned with 0.1~0.5% ethylhydrogen dichlorosilane and anhydrous alcohol. It should be mixed with a small amount in the wet weather or washed with propylene oxide or dilute ammonia. The oily mist, the water-wet mist, the oil-water mixed mist, and the like on the optical glass can also be cleaned by using the above cleaning agent. 2, the cleaning of rubber parts There are many parts made of rubber in the experimental equipment. As a kind of polymer organic matter, rubber will age after being greasy or organic solvent, causing the parts to be deformed, soft and sticky; the transmission belt made of rubber, if Oil stains will reduce the coefficient of friction and cause slippage. To clean the oil on the rubber parts, alcohol, carbon tetrachloride or the like can be used as a cleaning agent, and an organic solvent cannot be used as a cleaning agent. When cleaning, first wipe with a cotton ball or silk cloth cleaning agent, after the cleaning agent is naturally evaporated and cleaned. It should be noted that carbon tetrachloride is toxic and harmful to human body. It should be carried out under good ventilation conditions during cleaning. Pay attention to safety. Concerned about surprises Label: Maintenance and maintenance of laboratory instruments Previous: Reasons and solutions for not cooling the high temperature box Next: What are the methods for cooling tower maintenance? Led Underwater Light,Waterproof Underwater Light,Uv Casing Led Light,Custom Led Underwater Light Guangzhou Qshine Pool Lights Manufacture Co., Ltd , https://www.qshinepoollight.com