คุณลักษณะ

• It is an instrument to adjust the amount of gas released by attaching it to a cylinder of experimental gas.
• When the experimental gas is sprayed by hand for about 1 second, an amount of 400~500 mL is released.
• If the spray is repeated for about 1 second, the amount of emission gradually decreases, and it empties around 30 times.
• When this instrument is installed and used, there is little waste and efficient experiments can be performed.