BAIRD &.TATLOCK (LONDON) LTD. 



Apparatus made of Opaque Fused Silica. 



Silica Combustion tubes and boats. 



Plates as a substitute for wire gauze save 25 per cent, in time of heating 

 Triangles, with or without nickel or iron wire. 



Pyrometer tubes. 

 Inner tubes for condensers. 



They will stand a temperature of over 1,200 C. 

 Unaffected by extreme change of temperature. 

 Acid proof. 



They effect a great economy in gas and in time. 

 Rapid readings with pyrometers. 



2407 1 Silica Tubes, opaque, open both ends. 



Tubes closed one end ^ to i in. bore, 4d. to 1/9 per tube extra according to size, 

 * Lengths of less than i ft. (30 cm.) 10% extra. 



(CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



467 



2H 



