Lime sulfur mixture preparation

Lime sulfur, lime sulfur mixture referred to their method of preparation are as follows :

( A ) fresh and high quality materials, lime sulfur powder 0.5 to 1 kilogram of water 1 to 2 kg 10 kg .

( 2 ) Method calcium polysulfide cooking wok must be born with a large ( tank ) or earthen pot , you can not use copper, aluminum and other containers or corrosive damage. Remove enough water initially said the proportion of part of the water used to dissolve another part lime water into the wok and heat . Fever of open pending quicklime into lime dregs filtered into the pot after pot of water level measurement mark and continue heating the water to boil and slowly thrown into sulfur powder ( or sulfur powder add a little water into a paste before slow slowly pour the boiling milk of lime homogeneous medium ) while stirring constantly . weed sprayer Note firepower should raging fire . In the cooking process continue to make up the boiled by the heat dissipated by the amount of water each time the amount of water is not too large to prevent the impact of sudden cooling liquid mass , and 15 minutes before the ceasefire to stop adding water. Also when you start cooking more 1 /3 of the water is in the middle do not add water conditions continue to cook over high heat for about 60 minutes cloudy yellow liquid from the pot into a clear dark red ( dark brown ) , dark green trash can ceasefire. Cooking time is too short or insufficient firepower of liquid waste into yellow concentration is low. Generally do not exceed the longest brewed for 1.5 hours. Cooked orange liquid cooling remove the supernatant after precipitation of calcium polysulfide liquid that was used Baume hydrometer measurement that is known concentration of this stock solution crossing .

( 3 ) the use and preservation method cooked well, liquid quality is high, the concentrations of up to 30 Baume , but in general should also be up to 20 to 26 degrees Baume . Cooking is the key to the quality of lime and sulfur powder and cooking process firepower to continue to maintain boiling. Quicklime is best to use good quality white lumpy , as with weathered lime must be increased by 30 % of the amount . The use of lime sulfur concentration must be strictly controlled according to temperature changes , otherwise easily cause defoliation , sunburn and so on. Winter garden clearance of 0.7 to 0.8 degrees Baume available in spring available 0.3 to 0.4 degrees Baume . Summer high temperature (30 ℃ above ) , the winter cold (4 ℃ less ) are not suitable for use lime sulfur . If you must use , in the hot season should be controlled at 0.2 Baume degrees or less. plastic sprayer Spraying time should be 10:00 or 15:00 before after drought periods should also be strictly controlled medication. Utensils after use must rinse .