BAIRD &TATLOCK (LONDON) LTD, 



To Flue for 

 Alight 



4725 4726 



We direct attention to a new form of the Orsat Apparatus, designed by Simmance & Abady and illustrated 

 above, which possesses the following advantages. 



Portability. 



One half the weight and one quarter the bulk of the ordinary type. 



Durability. The absorption bulbs are compact, strong, and not liable to break, and a breakage can 



be replaced' at a small cost. 

 Compactness. The concentric absorption pipettes and the general arrangement make the apparatus 



easy to handle, and it can be shaken bodily so that a complete absorption of the constituents can 



be obtained. 



A special form, Fig. 4725, is arranged as a combined CO 2 and Flue Draught Tester, the working of which 

 will be clear from the illustration. 



DESCRIPTION. 



The apparatus consists of special concentric absorption tubes or pipettes mounted in a semi-circle surrounding 

 the water jacketed burette on a metal stand. The burette is made with an enamel backing, down the centre of 

 which a coloured enamel stripe runs, thus rendering an accurate observation a matter of great ease and simplicity. 



The form of mounting the capillary tube renders it much less liable to break. The apparatus is provided 

 with a filtering tube for cleaning the gas and a bottle containing water for drawing in the sample and passing it 

 to and from the burette and the absorption pipettes, which latter have rubber bladders fitted to keep the solutions 

 free from contact with air. 



The apparatus can be lifted and shaken without damage and thus rapid and complete absorption is obtained. 



When not in use the apparatus is enclosed in a stout metal cylindrical case, dimensions of which are 5j in. 

 diameter, 15 in. high, and the total weight charged with solutions is only 6 Ibs. 



There is no wood to warp and no part of the instrument is subjected to strain. The apparatus is made in 

 several forms, prices of which are set out below : 



4725 T Simmance & Abady's Portable Boiler Tester for ascertaining the percentage of C0 2 

 and the draught in flues, complete in portable metal case . . 



4726 1 Do., Do. Orsat Analysis Apparatus, with two absorption bulbs for C0 2 and O 2 , 



complete in case 



4727 T Do., Do. Orsat Analysis Apparatus, with three absorption bulbs for CO a , O 2 , and 

 CO, complete in case 



4728 T Do., Do. Orsat Analysis Apparatus, with four absorption bulbs forCO 2 ,O 2 , and two 

 for CO (to ensure more complete absorption of CO), complete in case . . 



4729* Do., Do. Orsat Analysis Apparatus, with four absorption bulbs for CO 2 ,O 2 , CO, and H 2 , 

 complete in case 



1 15 

 2 10 

 2 15 

 370 

 3 12 6 



CROSS STREET HAJTO>T GARDEN, E-C 



