BULLETIN 102, U. S. DEPARTMENT OF AGRICULTURE. 
LIST OF NECESSARY APPARATUS. 
(1) Mill. 
(2) Balance. 
(3) Erlenmeyer flasks, cork or rubber 
stoppers to fit. 
(4) Pipette, 50 c. c. 
(5) Funnels, 3-inch. 
(6) Graduates, 25 c. c. 
(7) Beakers, 250 c. c. 
(8) Burette, 50 c. c. 
(9) Filter stand. 
(10) Hydrometer, reading 
0.700 and 1,000. 
between 
DESCRIPTION OF APPARATUS. 
Mill. — Any small hand mill can be used for grinding the samples, 
but where a large number of samples is to be handled, a power mill 
similar to the one shown in figure 1 is practically indispensable. 
Any make of power mill similar to the one 
illustrated will be found satisfactory. 
Balance. — Any chemical balance will 
answer for weighing the samples, but a 
balance like the one illustrated in figure 
2 will greatly facilitate the work and will 
be found accurate and speedy and not as 
complicated as most chemical balances. 
Pipettes. — Where only a few samples 
are to be analyzed, a 50 c. c. standard- 
ized pipette will serve for adding the 
alcohol, but where many samples are to 
be analyzed an automatic 50 c. c. 
burette, such as is illustrated in figure 4, 
will be a decided advantage. An or- 
dinary standardized 75 c. c. pipette will 
suffice for measuring the water, but 
where many samples are to be handled 
an automatic 75 c. c. pipette (illustrated 
in fig. 3) will be a great help both in 
time and accuracy. 
Burettes. — A 50 c. c. Squibbs burette 
will be found very satisfactory in titrat- 
ing (fig. 5) 
Filter stand. — A convenient filter stand 
is illustrated in figure 6. It accommo- 
dates 60 funnels and graduates and is 
a great space saver over many other 
types. 
Drain stand. — A wooden stand like the one shown in figure 7 will be 
a great help in drying and protecting the glassware. This model can 
be easily moved about, enabling one to move many flasks or beakers 
at once, thus saving many steps and valuable time. 
Fig. 3.— Bailey's automatic pipette (75 
c. c.) connected with bottle of distilled 
water. 
