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1678 tr. M. Charas Royal Pharmacopœa iii. xxv. 148 You may put on again and relute the little Globe, or Balon [Fr. Balon], and continue the Distillation with a very violent fire.

1682 G. Hartman Digby's Choice Coll. Rare Secrets i. 37 Put all the Liquor and Salt that cometh over, to digest and circulate a Month in fimo, in a great Ballon close shut.

1728 E. Chambers Cycl. Ballon, in Chymistry, a French Word for a large round short-neck'd Matrass, or Vessel.

1784 J. Priestley in Philos. Trans. 1783 (Royal Soc.) 73 417 Interposing a large glass balloon between the retort and the recipient for the air.

1851 S. F. Baird tr. J. G. Heck Iconogr. Encycl. I. Chem. 31 We pour in enough of the liquid, the density of whose vapor is to be ascertained, for the volume of the vapor generated to exceed the volume of the balloon.

1899 Jrnl. Physical Chem. 3 196 The boiling-point readings..were taken after adding small amounts of acetone to water in a one liter balloon flask.

1918 Trans. Kansas Acad. Sci. 1916–17 28 140 The process used consists in heating a quantity of finely pulverized coffee in a balloon flask contained in an oil bath at about 175° to 200°.

1965 Technol. & Culture 6 572 The upper part of the glass balloon stands out of the furnace, and is kept relatively cool by the air.

2001 Stud. in Conservation 46 122/2 Oxidized oil sample was weighed precisely and introduced into a 50ml balloon flask with 7ml of 10:1 isopropanol/acetic acid..solution.