91caopron-91av中文字幕-91av在线视频观看-91av在线免费观看-欧美aaaa视频-欧美aaaaaaaa

In the summer season, the temperature outside the laboratory can reach up to 40 ℃, and the heat wave hits people, filling the air with a dry and anxious atmosphere. In such an environment, battery mat

Although the principle and operation process of the Shanghai Yetuo vacuum centrifugal concentrator are relatively clear, in order to achieve efficient, comprehensive, and non-destructive concentration

In high-precision fields such as scientific research, electronics, biology, and chemistry, "water" has never been a simple H ? O, but a decisive element hidden behind countless experiments.

In biological experiments, 'cell lysis' is a seemingly fundamental but extremely critical step. Whether it's extracting protein DNA、RNA， Whether to prepare cell homogenate or not, the effi

In laboratory work, we often pay attention to the precision of reagents, the stability of instruments, and the standardization of operations, but there is a crucial factor that is easily overlooked: t

In modern kitchens, rice cookers, electric ovens, and air fryers have become popular. Nowadays, more and more families are also trying a "more cutting-edge" device - Shanghai Yetuo Home Free

In water quality testing laboratories, COD (Chemical Oxygen Demand) is a fundamental and critical indicator. It reflects the total amount of reducing substances in the water body and is an important r

Every July and August, it is a time when fruits are abundant. The market is filled with fresh peaches, lychees, mangoes, watermelons, and grapes, baskets of which are as bright as the sunshine itself.

The Shanghai Yetuo Economic Biochemical Incubator is a basic experimental equipment that integrates refrigeration, heating, and constant temperature control. It is suitable for applications such as mi

In experiments such as environmental testing, food analysis, and metal element analysis, sample digestion and acid treatment are crucial steps in the pretreatment process. The traditional method of ac