42 
BULLETIN 890, U. S. DEPARTMENT OF AGRICULTURE. 
Chemicals for chemical analysis of milk and cream. 
Sulphuric acid, commercial, \ gallon. 
Phenolphthalein, 1 per cent solution, 
100 c. c. 
Sodium hydroxid, 
liter. 
tenth normal, 1 
Bacteriological apparatus for milk plant. 
1 autoclave, medium size. 
1 dry- sterilizing oven, gas stove, and 
kitchen oven. 
1 incubator, 10 by 8 by 6 inches, in- 
side dimensions. 
1 balance, with weights to 5 kilos. 
100 1 c. c. pipettes, graduated in tenths 
with an extra tenth above the 
mark. 
1 5 c. c. pipette. 
1 10 c. c. pipette. 
1 25 c. c. pipette. 
1 100 c. c. pipette. 
1 100 c. c. cylinder, graduated. 
1 500 c. c. cylinder, graduated. 
1 1,000 c. c. cylinder, graduated. 
2 dozen Erlenmyer flasks, 1,000 c. c. 
100 petri dishes, 100 by 10 m. m. 
4 dozen glass bottles, 8 ounces, pre- 
scription or French square. 
2 funnels, glass, 6-inch. 
1 double boiler, 4 gallon. 
1 thermometer (—10° to 100° C). 
1 thermometer (0° to 250° C. for dry 
sterilizer). 
1 dozen glass stirring rods (assorted). 
2 petri-dish holders, sheet iron, 50 
dishes. 
2 pipette boxes. 
1. reading glass, 2\ magnifications, 4 
inches'. 
1 counting plate. 
1 tallying machine. 
1 gas stove, single burner. 
2 Bunsen burners. 
12 feet gas tubing, \ inch. 
2 wax pencils, blue or red. 
Chemicals and accessories for bacteriological examination: 
1 liter sodium hydroxid, tenth normal. 
1 liter sodium hydroxid, normal. 
1 liter hydrochloric acid, tenth normal. 
1 liter hydrochloric acid, normal. 
Absorbent cotton. 
Nonabsorbent cotton. 
Canton flannel for filtering. 
Filter papers. 
Peptone. 
This bulletin and other department literature dealing with milk 
plants point out some of the more important economic and sanitary 
problems in the handling and distribution of milk. While all details 
can not be covered in these publications, they may serve to direct the 
attention of milk-plant operators or prospective operators to matters 
that might otherwise be overlooked. 
