Work with alkali metals.

In this paper methods are described of purifying alkali metals in vacuo and production techniques for alkali metal amalgams. The glass devices used for these purposes have no vacuum taps, ground in stoppers or rubber tubes; thus the purity of the metals and amalgams is not affected by the vapour of the vacuum lubricant, water or otherwise. The alkali metal amalgams produced remained unaltered in quality through years of storage.Translated by HJ De Bruin