CALIBEATION OP THE EiCRY SETTLING TUBS FOR SAHD AimLYSIS 

 D. M. Poole and \-L S. Butcher 



COKTEWTS 



Page 



List of Figures 2 



AlDstract 2 



Introduction . . . , 3 



Method of Investigation « ^ 



Accuracy • 5 



Settling Tuhe Error ..... » 5 



Splitting Error . s ........... 7 



Effect of Sample Weight , . . 8 



Influence of Particles Coarser than 1 mm. 



on the Median Diameter 9 



Influence of Particles Finer than l/l6 mm. 



on the Median Diameter 10 



Procedure 11 



Splitting the Sample » H 



Method of Introducing Sample into Tube . 11 



Reading Height of Sand 12 



Summary 13 



Acknovrledgments 13 



References '• l'^ 



