BULLETIN No. 569 , 
Contribution from the Bureau of Chemistry ah RG 
CARL L. ALSBERG, Chief 
Washington, D. C. 4 June 25, 1917 
THE SANITARY CONTROL OF TOMATO-CANNING 
| FACTORIES. 
By Burton J. Howarp, Microscopist in Charge, in collaboration with CHARLES 
H. STEPHENSON, Scientific Assistant, Microchemical Laboratory. 
CONTENTS. 
Page Page 
MMTPTOGUCHIONM seers ce -mieme eee a cle cise ec osice 1 | Sorting—Continued. 
Conditions observed in several tomato- Costiolsortin gees se yaa Ae ae ras 20 
Canningwactoriesma.2a-eeetece serie coe toe: Sei (iM De est ooh cobb oleate eteneises Sees Gries, Celene a eed aa) ai 20 
AVN 2S AT ee eters ete aeeeae 4 PRR NY Ee 118 esha) Meet a Hy Na ny zoel ease ae NA ee i lat UN 21 
Sorting: Pulp mMalcim ySyiStemise a qeeeee nee ep mee 21 
Nj Shim POLtATICe see eae eee eine Nes 10 |. Promptness in handling stock............... 23 
SORMNGISYStCMS eee eee cee ee ee eee ee 11 | Cleanliness in the factory: 
Uniformity and rate of feeding..........- 14 Dtisimportance gs eee aN ey toe oie Seana eS 24 
ANUIEMIN SI OVACES Hemet sas A- eee cies ae as 15 The necessary equipment esses eee 25 
Lighting the sorting tables.........---.. 16 Useiotequipmentisy eee eee eens 25 
SOGLCES ee eee sooo ae eg 17 Psychology of cleanliness............--.. 26 
Wolume;sortede sera. ea 2 ee Ll pelualooratonyaCOMtrol ss. se seers re neo 27 
Eiiciencyof sorting): 2022.22.20. 22222 ASHES CATIA A Type ae er ol ceyesiaa ea eee a nea ra 28 
INTRODUCTION. 
Marked changes in machinery and methods for the manufacture of 
food products have been made in the last 6 or 8 years under the 
stimulus of Federal and State pure food and sanitary laws. The 
manufacturer has come to appreciate the need for more sanitary 
methods. Certain individuals, firms, and corporations, of their own 
initiative, have blazed a path out of questionable or unsanitary sur- 
roundings in advance of Federal or State laws imposing such. re- 
forms. Much credit is due manufacturers of this type who are willing 
to improve their methods of manufacture regardless of the existence 
or nonexistence of laws making such improvements imperative. At 
the other extreme is that small class of manufacturers who are in- 
different to the character of their product, either from the standpoint 
100635°—Bull. 569—17——1 , 
