Laboratory Test Sheet
Particle Size Distribution (Hydrometer Sedimentation)
BS 1377 : Part 2 : 1990
              BS 1377 : Part 2 : 1990    
Particle Size Distribution (Hydrometer Sedimentation)  
Location       Job ref.  
        Borehole/Pit no.
Soil descriptioncription Sample No.
        Depth m    
Test method                   BS1377: Part 2:  1990: 9.6 Date  
Method of preparation
CALIBRATION AND SAMPLE DATA     PRETREATMENT*
Hydrometer no. Pretreated with    
Meniscus correctionm
  Initial dry mass of sample                    mo    g
Reading in dispersant Ro
Dry mass after pretreatment                 m    g
Calibration equation hr = .....- .....Rh
Pretreatment loss                               mo-m    g
Dry mass of soil                     m   g     %
Particle Density        
    measured/assumed *       psmed* ps Mg/m3   D = 0.005531*sqrt(n*Hr)/(ps-1)t mm  
Viscosity of water......C *....C* mPa.s            
      K  =  ((100*ps)/(m*(ps-1))/Rd%    
   TEST DATA                    
Date Time  Elapsed Time t min Temp. T deg C

Reading
 
  Rn'
Rn'+Cm = Rh Effective depth      Hr mm Particle diameter D mm Rh'-Ro' =Rd Percentage finer than D
 
K%
 
   
   
   
   
   
   
   
   
   
   
   
   
*Delete as appropriate                
      Operator Checked Approved
         
                       
  Form 2Q