THE OIL CONTENT OF FLAXSEED 
29 
Table 20. — For converting ref Tactometer reading into percentage* of tin-seed oil 
[Readings made at 25° C] 
Refractometer read- 
ing 
Linseed 
oil 
Refractometer read- 
ing 
Linseed 
oil 
Refractometer read- 
ing 
Linseed 
oil 
1.61276 
Per cent 
30.0 
30.1 
30.2 
30.3 
30.4 
30.5 
30.6 
30.7 
30.8 
30.9 
31.0 
31.1 
31.2 
31.3 
31.4 
31.5 
31.6 
31.7 
31.8 
31.9 
32.0 
32.1 
32.2 
32.3 
32.4 
32.5 
32.6 
32.7 
32.8 
32.9 
33.0 
33.1 
33.2 
33.3 
33.4 
33.5 
33.6 
33.7 
33.8 
33.9 
34.0 
34.1 
34.2 
34.3 
34.4 
34.5 
34.6 
34.7 
34.8 
34.9 
35.0 
1.60967 
Per cent 
35.1 
35.2 
35.3 
35.4 
35.5 
35.6 
35.7 
35.8 
35.9 
36.0 
36.1 
36.2 
36.3 
36.4 
36.5 
36.6 
36.7 
36.8 
36.9 
37.0 
37.1 
37.2 
37.3 
37.4 
37.5 
37.6 
37.7 
37.8 
37.9 
38.0 
38.1 
38.2 
38.3 
38.4 
38.5 
38.6 
38.7 
38.8 
38.9 
39.0 
39.1 
39.2 
39.3 
39.4 
39.5 
39.6 
39.7 
39.8 
39.9 
40.0 
40.1 
1.60669 
Per cent 
40.2 
1.61270. 
1.60961 
1.60955 
1.60663 
40.3 
1.61264 
1 .60658 
40.4 
1.61258 
1.60949 
1.60652 
1 .60646 
40.5 
1.61252 
1.60943.. 
40.6 
1.61246.. 
1.60938 
1.60641 
40.7 
1.61239 
1.60932 
1.60635... 
40.8 
1.61233 
1.60926 
1.60629 
40.9 
1.61227.. 
3.60920 
1 .60623 
41.0 
1.61221 
1.60914 
1.60618.. 
41.1 
1.61215 . 
1.60908 . 
1.60612 
41.2 
1.61209 
1.60902 
1.60896 
1.60607 
41.3 
1.61203 
1.60601.. 
41.4 
1.61197 
1.60890 
1.60595 
41.5 
1.61190 . 
1.60884.. 
1.60589 
41.6 
1.61184.. 
1.60878 
1.60584.. 
41.7 
1.61178 
1.60873 .- 
1.60578 
41.8 
1.61172 
1.60867 
1.60572 
41.9 
1.61166 . 
1.60861. . 
1.60567 . 
42.0 
1.61160 
1.60855 
1.60561... 
42.1 
1.61154 
1.60849 
1.60556 
42.2 
1.61148 . 
1.60843 . 
1.60550 
42.3 
1.61142.. 
1.60837.. 
1.60544... 
42.4 
1.61136.. 
1.60832 
1.60539 
42.5 
1.61130 
1.60826 
1.60533 
42.6 
1.61124 
1.60820 
1.60527 . 
42.7 
1.61117.. 
1.60814.. 
1.60522 
1.60516 
42.8 
1.61111 
1.60808 
42.9 
1.61105 
1.60802 
1.60510 
43.0 
1.61099 . 
1.60797 
1.60505.. 
43.1 
1.61093.. 
1.60791. . 
1.60499 
43.2 
1.61087 
1.60785 
1.60493 
43.3 
1.61081.. 
1.60779 
1.60488 . 
43.4 
1.61075.. 
1.60773 
1.60482... 
43.5 
1.61069 
1.60767 . 
1.60477 
43.6 
1.61063 
1.60762 
1.60471 
43.7 
1.61057. . 
1.60756 
1.60750 
1.60465 
43.8 
1.61051.. 
1.60460... 
43.9 
1.61045 
1.60744 . 
1.60454 
44.0 
] .61039 
1.60738 
1 .60449 
44.1 
1.61033.. 
1.60733 
1.60443 . 
44.2 
1.61027 
1.60727 
1.60437 
44.3 
1.61021 
1.60721 
1.60432 
44.4 
1.61015 
1.60715.. 
1.60426 
44.5 
1.61009.. . 
1.60710 
1.60421 
44.6 
1.61003 
1.60704 
1.60415 
44.7 
1.60997 
1 .60698 
1.60410 
44.8 
1.60991 
1.60692 
1.60404 
44.9 
1.60985 
1.60687 
1.60399 
45.0 
160979 
1.60681 
1.60973 
1.60675.. 
(6) Wipe off the prism of the refractometer with a piece of soft 
absorbent cotton. 
(7) Note the percentage of oil in the sample under test by com- 
paring the refractometer reading with a set of oil values which have 
been assigned to the refractometer readings. 
The data given in Table 21 compares the oil content of 120 samples 
of flaxseed, covering a wide range in oil content, as determined by 
the method outlined above, with the results of the method of analy- 
sis described as official by the Association of Official Agricultural 
Chemists (1). 
