How to properly clean the glass thermostatic bath
The glass constant temperature water bath has been an old product that has been on the market for many years. It is a kind of constant temperature water bath. It is widely used in laboratory, analysis room, education, scientific research and other fields. It has constant temperature visibility and corrosion resistance. It can be combined with the characteristics of stirring and constant temperature, and plays a decisive role in some experiments. From its name, we can see that glass is an important part of the equipment, so how can we clean Dali for this part? Let me briefly explain it to you.
We know that one characteristic of the glass constant temperature water bath is that it can be heated at a constant temperature. However, after chemical reaction, the glass jar containing the reaction substance in the chemical experiment often has residues attached to the inner wall of the glass fiber reinforced plastic, especially after heating or placing the reaction substance at high temperature. When it takes a long time, it is harder to wash. More importantly, the uncleanness of the glass cylinder will affect the experimental results, and even allow the experimenter to observe the error phenomenon, induct and reason the wrong conclusion. Therefore, the glass thermostatic water bath must be cleaned regularly.
We also use a lot of methods for cleaning glass jars. In general, glassware can be cleaned using commercially available synthetic detergents. However, when the inner wall of the glass cylinder is provided with a poorly soluble substance and cannot be cleaned with a synthetic detergent, a suitable detergent should be selected depending on the nature of the attached material. If the deposit is an alkaline substance, dilute hydrochloric acid or dilute sulfuric acid may be used to dissolve the attached matter; if the deposit is an acidic substance, a sodium hydroxide solution may be used to cause the attached matter to react and dissolve; if the attached matter is difficult If it is soluble in acid or alkali, but it is soluble in some organic solvents, it is used as a detergent to dissolve the deposit. While washing and soaking, it is possible to use the heating property of the glass constant temperature water bath to properly heat the washing liquid, and the effect may be better. When cleaning, use a brush to brush up and down, and use appropriate force to avoid damage to the instrument and scratch the skin. After cleaning with detergent, rinse with tap water or distilled water two or three times. If necessary, it can be combined with ultrasonic cleaning. When the instrument is inverted, the wall of the device forms a uniform water film, and there is no dripping water droplets, and it is washed when it does not flow down. It is important to note that everyone must wear gloves when cleaning to avoid acid and alkali lotion burning hands.
For the glass constant temperature water bath, we must do timely cleaning, because some chemical experiments, timely retreat the residual liquid after the reaction, the inside of the instrument leaves a difficult to remove the attachment, but after a period of time, the volatile solvent escapes, There is residue attached to the inner wall of the instrument, making washing difficult. There are also substances that react with the instrument itself, and if not washed in time, the instrument will be damaged or even scrapped. Therefore, we must pay special attention to the cleaning of glass instruments, in order to reduce our experimental costs, and at the same time make our experimental data more accurate.
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