BAIRD &. TATLOCK (LONDON) LTD. 



SECTION 12. 



Water Analysis and Apparatus for Testing of 



Sewage Effluents. 







I 





5064 



5064 s Set of Apparatus for Testing the Hardness of Water, etc., in varnished wooden 

 cabinet, with lock, key, and handle 



CONTENTS. 



A. Aspirator, 2-litre capacity, filled with distilled water. 



B. Bottle, 2-litre capacity, filled with soap solution. 



Indiarubber cork at top and bottom of aspirator, tube and clip at bottom. 

 Indiarubber cork, with tubes and blowing ball, 

 c. Bottle, 8 oz., fitted with indiarubber cork and pipette, containing methyl orange. 



D. Two Burettes, 25 cubic centimetres, graduated in jVths of a cubic centimetre. 



E. Bottle, 16 oz., fitted with indiarubber cork, containing acid " A." 



F. ,, ,, " B." 



G. Shaking Bottle, 6 oz., marked 35 cubic centimetres and 70 cubic centimetres. 

 H. Porcelain Basin No. 3 R.B. 



I. Bottle, non-actinic, 10 oz., corked, containing i per cent, silver nitrate solution. 



J. 100 cubic centimetres Measure. 



K. Stirring Rod, 4 in. long. 



L. Filter Paper, 1 1 centimetres, 595 



M. Funnel 3 in. 



DIRECTIONS FOR USE. 



In making a test for hardness, fill the shaking bottle up to the 70 cubic centimetres mark with the water to 

 be examined, then, by means of the blowing ball, fill the burette with soap solution until the zero mark is reached. 

 ' In the event of too much soap being forced into the burette, the excess may be run off by means of the stop- 

 cock. All is now ready for proceeding with the test which is as follows : 



326 



jCHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



927 



