A cold finger is a piece of laboratory equipment that is used to generate a localized cold surface. It is named for its resemblance to a finger and is a type of cold trap. The device usually consists
A cold finger which includes a vacuum outlet.
Camphor being sublimed. The crude product in the bottom is dark brown; the white purified product on the bottom of the cold finger above is hard to see against the light background.
Dark green crystals of nickelocene, freshly sublimed on a cold finger.
Camphor is a waxy, colorless solid with a strong aroma derived from the wood of the camphor laurel, a large evergreen tree found in East Asia; and in the kapur tree, a tall timber tree from South East