A common piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion.
Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)
1842×2400, 326.9 KiB
785×1024, 55.9 KiB
491×640, 29.0 KiB
245×320, 10.6 KiB