论文部分内容阅读
黑龙江省密山县八五五农场李义德同志来信询问对土法熬制的石硫合剂怎样鉴别其浓度。现解答如下: 鉴别石硫合剂的浓度最好采用波美比重计测定。如果没有波美比重计,可用称量法测定。方法是:取一个浅色的玻璃瓶,先称出空瓶的重量,再把瓶子装满清水,称得瓶中清水的重量(不包括空瓶的重量),然后把瓶内的清水倒掉并甩干,再用此瓶装满已熬好的石硫合剂原液,称得石硫合剂原液的重量(亦不包括空瓶的重量),然后根据以上称得的清水及石硫合剂原液的重量按公式计算该石硫合剂原液的普通比重,最后通过查对普通比重与波美度对照表便可得出该石硫合剂的浓度(即波美度)。计算公式及普通比重与波美度对照表如下:
Comrade Li Yide of 855 Farm in Mishan County, Heilongjiang Province, inquired of how to identify the concentration of the stone sulfur mixture that is made from indigenous soil. The answer is as follows: Identification of the optimum concentration of lime sulfur Baume ratio determination. If there is no Baume, can be measured by weighing method. The method is: take a light-colored glass bottle, first weigh the empty bottle, and then fill the bottle with water, said the weight of water in the bottle (not including the weight of the empty bottle), and then the bottle of water drained And then dried, and then filled with this bottle has been boiled stone sulfur mixture stock solution, said the weight of the stone sulfur mixture stock solution (also does not include the weight of the empty bottle), and then based on the above-mentioned water and limestone mixture stock weight According to the formula to calculate the ordinary proportion of the stone sulfur mixture of the original liquid, and finally by checking the ordinary gravity and Baume degree of control table will be able to get the concentration of lime stone sulfur (ie, Baume degrees). Calculation formula and ordinary weight and Baume degree comparison table is as follows: