BAIRD &TATLOCK. (LONDON) LTD. 



4908 



4908 s Richmond's Slide Scale, for estimation of fat in milk, with extra scale for correction 

 of specific gravity with temperature . . . . . . . . . . each 



METHOD OF USING RICHMOND'S MILK SCALE. 



To obtain the percentage of fat, place the line indicating the specific gravity against the line showing the 

 total solids, and read off the percentage of fat to which the arrow on the right of the scale is pointing. 



The lactometer readings on the scale are utilised thus : Should the temperature at which these readings are 

 taken be either above or below 60 F., the corrected reading may be obtained by placing the line showing the 

 reading obtained against 60 F. on the temperature scale, and then noting the lactometer reading opposite the 

 temperature at which the milk was tested. For example : If the lactometer reading be 32.1 and the temperature 

 70 F., the reading corrected to 60 F. will be 33.5 



050 



4909 



4910 

 4912 

 4913 

 4914 



4915 

 4916 



4909 4914 4915 



Soxhlet's Apparatus, complete as figured, with flask, condenser and Soxhlet's extraction 



apparatus, basin on stand with burner, stand and clamp for holding condenser, etc. 

 Separate parts. without IR tubing, each 



Flask 125 c.c. . . . . each . 3d - ' Per doz - 



Ball Condenser, Soxhlet's, nickel-plated each 



Soxhlet's Apparatus, 100 grammes . . 

 Dairy Thermometers in wood frame, with handle, marks, indicating freezing, churning, 



cheese, and scalding . . 8 in. long, each, 8d. ; per doz. 



12 in. , ,, lOd. ; 

 Automatic Acid Measure, absolutely accurate. Prevents the unpleasantness of pipetting 



acid, and renders mistakes impossible. For measuring sulphuric acid for Dr. Gerber's 



butyrometer, capacity 10 cubic centimetres 

 Automatic Acid Measure as above, with metal stand and ring, complete 





 

 

 





 





 



16 

 2 

 5 

 3 



7 

 9 



15 

 17 



6 



9 

 6 

 





 





 



ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



891 



