88 BULLETIN" 949, TJ. S. DEPARTMENT OF AGRICULTURE. 
(Name and location of laboratory.) 
Report on Sample of (Tars or Tar Products). 
Laboratory No , 192 . . . 
Identification marks: 
Submitted by 
Sampled , 192... Received , 192.. 
Sampled from 
Quantity represented : 
Trade name : 
Manufactured by at 
Location used or to be used : 
Examined for 
test results. 
General characteristics: 
Water 
Specific gravity, 25° C./25° C 
Specific viscosity, Engler, °C 
Float test, °C. [seconds] ; °C. [seconds] 
Melting point .... [°C] 
Total bitumen (soluble in carbon disulphide) [per cent] 
Free carbon (organic matter insoluble) [per cent] 
Inorganic matter insoluble [per cent] 
Distillation 
FRACTIONS. CHARACTER. % BY VOL. fo BYWT. 
-170° C. 
170° C.-235° C. 
235° C.-270 C. 
270° C.-300 C. 
Residue 
Specific gravity of distillate, 25° C./25° C 
Melting point of residue [°C] 
Remarks: 
Respectfully submitted, 
(Title.) 
