
1) Laboratory glassware
Found on
https://www.crosswordclues.com/clue/gas-syringe

A gas syringe is a piece of laboratory glassware used to insert or withdraw a volume of a gas from a closed system, or to measure the volume of gas evolved from a chemical reaction. A gas syringe can also be used to measure and dispense liquids, especially where these liquids need to be kept free from air. A gas syringe has an inner syringe chambe...
Found on
http://en.wikipedia.org/wiki/Gas_syringe
No exact match found.