BAIRD &IXTLOCKL (LONDON) LTD. 



3493 



3493" Bunsen Burners, Meker's pattern, for work at high temperature. 



The Ordinary Standard Pattern is shown above, and is made in five different sizes, the 

 dimensions of each being given below. 



No. I is the smallest size and is useful whenever one requires a small, but very hot flame. It is found especially 

 useful for sealing glass bulbs, pipettes, etc. 



No. 2. This can be compared to the ordinary bunsen as regards its uses, though the gas consumption is 

 much less. Its hot and uniform flame permits of the rapid heating of flasks, test-tubes, etc., without risk of 

 breakage. Glass is readily worked with this burner. 



No. 3. This is a size larger than No. 2, and is used for similar work. 



No. 4. This is larger still and gives a powerful flame. It supersedes the ordinary blowpipe for many pur- 

 poses, and since it is quite silent, requires no attention, and consumes less gas, its advantages are apparent. With 

 this burner a crucible of platinum 35 millimetres diameter was heated to a temperature of 1120 to 1140 C., 

 that is, to the limit which one can obtain with an ordinary blowpipe consuming twice as much gas per hour. It 

 is used for fusions, calcinations, etc. 



No. 5. This, the largest size, is used in special cases, and with furnaces. 



Size No. 



Height 



Section of flame 



Approx. gas consumption per hour 



Price 



"5 

 16 

 2.8 



2 



130 

 2O 



3-9 

 4/6 



3 

 155 



24 



6-4 



5/6 



4 

 190 



30 

 10.5 

 6/6 



5 

 250 mm. 



42 -. 

 20.4 c. ft. 

 22/- each. 



657 



