102 



CONDENSED MILK STRIKING 



Sampling of Batch. The samples can be drawn from the 

 pan by operating the two valves at the bottom explained under 

 "Description of Vacuum Pan." While the milk is condensing, 

 the partial vacuum in the pan makes impossible the drawing off 

 of the sample by simply opening the outlet. Instead of causing 

 the milk to come out, air would rush in w r ith violent force and 

 would cause the milk in the pan to be thrown over into the con- 



Fig*. 33. A con- 

 venient device 

 for sampling- 

 tile condensed 



milk in the pan 



Courtesy of 



Arthur Harris 



& Co. 



Fig*. 34. A convenient device for sampling 1 



condensed milk in the pan 

 Courtesy of Arthur Harris & Co. 



denser, besides dangerously jolting the machinery. For this rea- 

 son the outlet is equipped with two valves, both of which are 

 closed during the condensing process. For taking samples, open 

 the upper valve. This allows the condensed milk to run into 

 the nipple between the two valves. Now close the upper valve 

 and open the lower one. The milk will run out freely. The first 

 sample should be rejected, as it may contain water caught in 

 the nipple. 



For greater convenience and increased rapidity of sampling, 

 especially constructed sample cups or striking cups, attached to 

 the side of the body of the pan may be used. These striking cups 



