368 Turk MojoNNigr TEs? 
fan, on power unit. Run exhaust pipe on suction fan out of window 
and keep hood over the dishes in order to drive all ether fumes 
from room. 
29. Stool, to be screwed to floor. 
DIRECTIONS FOR OPERATING MOJONNIER TEST. 
Preliminary directions for tests of both Fat and Solids. 
(1) \Wash solids dishes with warm water and fat dishes 
with gasoline. Dry with a towel and place into heated vacuum 
oven for five minutes with vacuum on. At the end of five minutes 
put these dishes into cooler and, with the pump still running, 
keep them there for five minutes before weighing. Do not turn 
off motor until last dish is weighed out of cooling chamber. 
(2) While dishes are being heated and cooled, wash 
pipettes with water, aleohol and ether and dry by applying 
vacuum at exhaust cock upon tester. Always use clean and 
dry pipettes for each different sample. Aim to clean pipettes as 
well as all glassware, immediately after using. 
(3) It is very important to keep extraction flasks clean. 
Wash these with warm water immediately after extraction is 
finished. Wash with washing powder and shot when necessary. 
(4)) After aluminium dishes have been in cooler for at 
least five minutes, weigh accurately to .0001 gram, using the 
proper counterpoise. Weigh solids dishes with cover on. Fat 
dishes do not have covers. Fat dishes should be cooled for 
seven minutes before being weighed. 
(5) Use weighing pipettes as follows: Fill five-gram pipette 
up to five-gram mark for butter fat, and one-gram pipette 
up to one-gram mark for total solids. If duplicates are to be run 
hll two pipettes from the same sample. As pipettes are filled 
place lower end into cleaned and dry rubber tubes which are 
pressed upon knobs at ends and center of weighing cross. Either 
five or less samples for butter fat or five or less for total solids 
may be pipetted out. 
(6) Weigh the cross with the pipettes containing the milk 
on chemical balance accurately to .0001 gram. Run milk from 
pipette into proper flask, or 3-inch dish 1f making solids test. 
The pipettes may be distinguished by the number upon each 
