DETERIORATION OF CHLORINATED LIME 17 
rate of loss of available chlorine is higher during the summer months 
and lower during the cooler fall and winter months, a fact that had 
previously been “recognized. The values for samples from packers 
C and D, which were “considered abnormal, were not used in plotting 
the curve for the summer samples. 
EFFECT OF METHOD OF PACKING 
Samples from packer C were mixed and packed entirely by hand; 
those from all the others were packed by machinery. Packer B used 
a machine with a foot-tread control to feed the material into the 
container. The other packers used automatic feed machines. 
STORAGE PERIOD (MONTHS) 
hcg NOVAS fete ‘es MARIS MAYI5 JSULYIS SEPTIE NOV-I5 JANIS 
19. 1924 
RATE OF LOSS OF AVAILABLE CHLORINE aaa 
(PER CENT) 
| 
AVERAGE MONTHLY TEMPERATURE VARIATIONS 
rrabES ae Be 
ENGEERSZARORSSGEE 
ESTE TEE PS 
Fic. 5.—Rate of loss of available chlorine from winter-packed and summer-packed chlorin- 
ated lime stored at varying temperatures. 
AVERAGE MONTHLY TEMPERATURE AVERAGE MONTHLY LOSS 
When the winter-packed samples were prepared the air was dry and 
the material packed by hand was as ster e as that packed by machin- 
ery. When the summer-packed samples were put up by packer C 
the humidity was high and the material was spread on trays open 
to the atmosphere for about two hours during the packing, which 
should have given a good chance for the abso ption of moisture and 
carbon dioxide from the air. This material, although rather lumpy 
when first opened, contained no more water or carbon dioxide than 
that packed by machinery. For the first nine months it kept as well 
as the others, but at the end of this time it rapidly lost available 
chlorine. As the material from packer D showed a similar loss, 
however, this variation can not be attributed to the method of 
packing. 
