364 CHEMICAL Tests AND ANALYSES 
pipette may be used. After emptying the pipette into the bottle it 
should be rinsed twice and the rinsings discharged into the test 
bottle. 
For making numerous tests 
f 
from the same sample it is advis- ES 
able to dilute the evaporated milk oS 
with equal parts of water, by a aes A 
weight; then weigh nine grams of pe --B 
this dilution into the test bottle and 5 
add one-half pipetteful of water. = 
| aes 
The Roese-Gottlieb Method. = 
: = Read f ! 
Proceed as directed under yaa Med ee eB 
“Sweetened Condensed Milk.”’ 2-5 
MILK POWDER. me 
Total Solids. Gages een D 
Weigh 35 grams of the milk —I 
powder in a drying bottle or evap- . > 
orating dish and place in drying 
oven at 100 to 105 degrees C. until micah 
constant weight 1s secured. Reading the Babcock test 
Ash. 
Weigh two grams of the milk powder in a weighed platinum 
dish and proceed as directed under “Milk.” 
Proteids. 
Use five grams of the milk powder and proceed as directed 
under “Milk.” 
Milk Sugar (Lactose). 
Dissolve ten grams of milk powder in 90 c.c. of water. Warm 
and stir until a satisfactory solution is effected and proceed as di- 
rected under ‘Milk,’ and multiply result by 10. 
Sucrose. 
For the determination of sucrose proceed as directed under 
“Sweetened Condensed Milk.” 
