H-shaped test tube for demonstrating chemical experiment in middle school

The utility model belongs to the field of middle school chemistry teaching, and provides an H-shaped test tube for demonstrating a middle school chemistry experiment, which is characterized by comprising an H-shaped test tube (1), calcium oxide (2), stronger ammonia water (3), a first injector (4),...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MIN CHENGLIN, CHEN HAIJU, ZHAO WEIYUAN, ZHAO YANJUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PLANETARIA SEALS SEPARATION TRANSPORTING
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