Device for measuring oxygen content in air

• Main Author: HAN RUXUE
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2012
• Subjects: ADVERTISING; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; GLOBES; PHYSICS; PLANETARIA; SEALS

The utility model discloses a device for measuring the oxygen content in air, and relates to the technical field of chemistry teaching aid and leaning materials. The device consists of a disposable syringe, a magnet and a sealant head, wherein an iron net barrel containing sodium polysulfide is arranged in the syringe; the iron net barrel is attracted by the magnet outside the syringe to move back and forth along the direction of the push rod of the syringe; and the needle head of the syringe is sealed by the sealant head at the joint. Compared with the prior art, the device disclosed by the utility model has obvious advantages that the user can make the device and measure the oxygen content in air by use of the waste disposable syringe and common articles in life, thereby satisfying the thirst for knowledge and curiosity of the students; and moreover, the device has a simple structure and is a kind of chemistry teaching aid and leaning materials with values in popularization.