SAMPLING AND TESTING CREAM 71 
Weight of fresh separator cream delivered by a 17.6 c.c. 
pipette. 
Per cent of fat Specific gravity Weight of cream 
in cream. (weighed.) in grams. 
10 1.023 17.9 
15 / 1.012 17.7 
20 1.008 17.3 
25 1.002 17.2 
80 .996 17.0 
85 -980 16.4 
40 .966 16.3 
45 .950 16.2 
50 947 15.8 
These figures plainly show that justice can not be done 
to patrons where cream is sampled with a 17.6 c.c. 
pipette. Cream is therefore always weighed on a cream 
scales, the amount necessary for a full sample being 
eighteen grams. 
Cream Bottles and Their Uses. Numerous styles of 
cream bottles are now 
upon the market. They 
range in length from six 
to nine inches with necks 
graduated from 30 to 
55%. The nine-inch 
bottles are graduated 
from 50 to 55% and re- 
quire special testers on 
account of their unusual 
: s length. These long- 
Fig. 27.—Torsion cream scales. necked bottles have the 
advantage of permitting the use of a full sample of 
cream which insures a more accurate reading than is pos- 
sible where only half a sample of cream is put in an 
