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WIRELESS TELEGRAPH CO. RARE METALS
High-Class Apparatus for Röntgen
Write for Illustrated Price List "H" to the Works :
TYSSEN ST., DALSTON, LONDON, N.E.
For Laboratory, Scientific, and all other
COCOA NUT CHARCOAL SPECIALLY PREPARED.
Chemical Manufacturers and Dealers,
4 OLIVER'S YARD, CITY ROAD, LONDON, E.C.
LIQUID AIR AND LIQUID HYDROGEN.
Dr. HAMPSON'S AIR-LIQUEFIER is now made to a standard pattern, and numbers are in use in University Laboratories and elsewhere in various countries. The whole apparatus is neat and compact and its parts very easily moved; the Liquefier, without stand, being a cylinder 17 inches high and 8 inches in diameter.
It begins to liquefy air in from 6 to 10 minutes after the admission of air at from 150 to 200 atmospheres pressure, making over a litre of liquid per
It requires no auxiliary refrigerant and produces a perfectly clear liquid which requires no filtering.
The operator has only one gauge to watch and one valve to control. HYDROGEN LIQUEFIER to the designs of Dr. MORRIS W. TRAVERS for use in conjunction with Air-Liquefier.
For Prices and Particulars apply to the Sole Makers :BRIN'S OXYGEN COMPANY, LIMITED, ELVERTON STREET, WESTMINSTER, S. W.
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