EXAMINATION OF FROZEN EGG PRODUCTS. T7 
\ 
METHODS OF EXAMINATION OF SAMPLES. 
METHODS TESTED. 
In the course of the preliminary preparation and examination of 
samples in the laboratories numerous questions arose concerning the 
details of the analytical methods. During the examination of sam- 
ples prepared in egg-breaking plants, and subsequently, experiments 
were performed to settle these questions, a short discussion of which 
would seem proper at this place, to save the time of chemists who, not 
knowing that such experiments had already been made, might again 
cover the same ground. 
User or SAND IN THE DETERMINATION OF ToTAL SOLIDS. 
One of the analysts who tried this procedure in his preliminary work 
reported that he considered the use of sand an improvement, in that 
the drying period was generally shortened, the final results being the 
same with sand and without, in the case of whole egg. With yolk, 
the results were invariably found to be higher when no sand was used, 
presumably due to incomplete drying. With white, the results were 
reported asinconclusive. It was noted that due to other demands on 
the suction pump, the average vacuum was only 22 inches, which is 
believed to be the explanation for the difficulty with yolk. 
TABLE 27.—Percentage of total solids obtained when sample is dried with and without sand. 
Whole egg. 
Dried. with 10 Dried without 
Sample No. grams sand in sand in 3-inch 
3-inch lead dish. lead dish. 
A. B. A. B. 
Per cent. | Per cent. | Per cent. | Per cent. 
SO Dee ere ee erry Set a se aerate Grate Sava te nay ahatal ey Nspacehn} steele apeiwiae eit elatarate 26. 98 26. 86 27.00 27.01 
OSs Se Sue COS EE COO BORO GSC COE Ie ES CIA Cen rey tenet es yes 26. 04 26. 14 26. 12 26. 26 
SAI Se Rae es os Se EA sO OT eee A eee ms RE oe ad 26. 27 26. 12 26. 35 26. 39 
eR ieee Ie ea fare age ass nya ose tarh Saag fo ajeun evajeieys erase tele wieic sidverers o7e atarere 26. 61 26. 75 26. 80 26. 78 
GIT ACS EE eM peak S EIR Be pp ope eer eg al em Se ee eae aE en RE ee ar a 26. 52 26. 45 26. 56 26. 56 
Average... -.-----. +--+ - 22 ee ene nee eee enn eee eee ee 26.47 26.58 
Yolk. White. 
Dried with 5-10 Dried without Dried with 5-10 Dried without 
Sample No. grams sand in sand in 3-inch grams sand in sand in 3-inch 
38-inch lead dish. lead dish. 3-inch lead dish. lead dish. 
A B A B A. B A B 
LS | | SRS | | | | | 
Per cent.| Per cent.| Per cent. Per cent. Per cent. | Per cent. | Per cent.| Per cent. 
GUNG sondéadbecuaanToes 50. 49 50. 46 50. 78 50. 76 12. 78 12. 93 12. 78 Lost 
(UNIS. Sacceebacoucoceus 50. 82 50. 90 50. 99 50. 91 12.35 12. 29 12. 36 12. 36 
HATO) cob obooSeE Bb eKoOde 50. 52 50. 58 50. 79 50. 79 12. 79 12. 85 12. 82 12. 83 
GUE) soooécoudesousene 50. 13 49. 90 50. 51 50. 42 12. 04 12. 04 12. 26 12.22 — 
Aid Sl iecieia eye rake rey arate 50. 51 50. 45 50. 81 §1. 03 12. 56 | 12. 53 12. 83 12. 85 
Average....---- 50.48 50.78 2852 12.60 
