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微型化学实验是实验教学改革的一项重要课题,其优点有很多,所以目前对微型实验装置的研制很活跃。在现有的实验教材中,非加热的气体发生装置多采用玻璃仪器,且容积较大和试剂用量较多等不足之处。方金祥对此类气体发生装置的微型化做过研制,但是其不足之处是对气体反应发生以后不好控制。 相似文献
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Ω型管是一种实验用玻璃仪器,可方便地代替启普发生器、U型管等仪器,执行气体制备、电化学、洗气干燥、冷凝回流、处理有害废气等实验,可用于中学化学演示实验和实验室分析。 相似文献
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在化学实验中,常常需要用玻璃细工装置修复或者自制一些玻璃仪器。以前玻璃细工装置采用本生煤气灯,由于它有很多弊端,已被酒精喷灯所取代。酒精喷灯分为挂式和座式两种。挂式酒精喷灯因火焰温度低,使玻璃工件难以加热至所需温度;座式酒精喷灯,虽然火焰温度高,但喷口易被玻璃渣堵塞,有时因酒精含杂质较多,燃烧时易在喷口处残存残渣,造成喷口堵塞,并且不安全。笔者经过多年的探索,研制了石英煤气喷灯,组成了一套高效、经济、安全的玻璃仪器细工装置。 相似文献
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This paper introduces the recent improvements and developments of glassware managements in the chemistry laboratories of Nanjing University. Considering the importance of glassware in university chemistry experiments (UCEs) laboratories, the self-service management for glassware reservation and compensation system has been developed. This novel management model evidently reduces the workload of technicians and leads to more efficient laboratory operations, which has been proved by practice. In addition, the damage of glassware in UCEs in recent years was evaluated. From the viewpoint of problems in glassware damaging, an effective rectification scheme and further developments have been proposed, and then the self-service Cloud-cabinets has been put forward. Our practice proves that the Cloud-cabinet for glassware reservation system can make a great seamless connection between students and technicians based on the platform and booking terminals, which has produced a safer and more convenient pattern for glassware claims and compensations. 相似文献
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我们根据多年来物理化学实验教学的体会和实践,对电化学实验的玻璃仪器进行了改造和设计。图1玻璃恒温反应瓶1仪器的设计与制作1.1玻璃恒温反应瓶该装置为满足恒温条件下进行实验所设计(见图1)。1.2微型电极管采用一根长约10cm,内径为05cm的玻璃管... 相似文献