HOMEMADE LIME-SULPHTJR CONCENTRATE. 5 



added. The mixture was stirred thoroughly throughout the time of 

 cooking, which lasted 1 hour. It was allowed to settle about 12 hours, 

 and then the clear solution was siphoned off. The sludge was put into 

 a cider press and the clear solution pressed out, using 10-ounce canvas 

 cloth for filter. A good grade of stone lime was used in experiments 

 1 to 5. Hydrated hme was tried in experiments 6 and 7. Commer- 

 cial ground sulphur was used in all the experiments. The results are 

 given in Table IV. 



Table TV. — Results of cooking different lots of lime and sulphur in preparation of lime- 

 sulphur wash, Benton Harbor, Mich., 1912. 







Formula. 







Experi- 

 ment No. 









Degrees 

 Baiim6. 













Lime. 



Sulphur. 



Water. 



Sediment. 







Pounds. 



Pounis. 



Gallons. 



Pounds. 





1 



25 



50 



25 



32 



27.0 



2 



2o 



50 



25 



36 



27.0 



3 



40 



80 



25 



80 



34.0 



4 



40 



80 



25 



90 



35.5 



5 



40 



80 



25 



85 



32.5 



6 



160 



80 



25 



110 



30.0 



7 



•CO 



SO 



25 



100 



31.5 



1 Hydrated. 



In Experiments 1 and 2 the 50-100-50 formula was used, with a 

 result of 27° Baume test solution in each case and 32 pounds of 

 sludge in Experiment 1 and 36 pounds in Experiment 2. In Experi- 

 ments 3, 4, and 5 the same proportion of hme and sulphur as above 

 stated was used, but the amount of water was reduced, the formula 

 being 40 pounds of lime and 80 pounds of sulphur and water to make 

 25 gallons of concentrate. The Baume tests of these three batches 

 varied from 32.5° to 35.5°, and the amount of sludge varied from 

 80 to 90 pounds. The sludge, after it had been run through the 

 cider press, was in the form of a tliick paste, so the number of pounds 

 given does not nearly represent the number of pounds of dry sediment. 



The formula used in the last two experiments was 60 pounds of 

 h3"drated lime and 80 pounds of sulphur with water to make 25 gal- 

 lons of concentrate. Where the hydrated lime was used the solution 

 did not test so high and there was considerably more sludge. 



DIRECTIONS FOR PREPARATION OF LIME-SULPHUR CONCENTRATE. 



The 50-100-50 formula has been generally recommended for the 

 preparation of home-boiled concentrated lime-sulphur solution. 

 The method of preparation is to boil together for 50 minutes to 1 

 hour 50 pounds of lime, 100 pounds of sulphur, and water to mako 

 50 gullons of the concentrated solution. A good grade of fresh 

 stoiK! hnu; containing not le.s.s than 90 per cent of calcium oxid is 

 necessary for the best results. JIy<U-ated lime is sometimes used, 



