TY - JOUR
TI - Increase of constant weight rates of weighing bottles and evaporating dishes in a pharmacological experiment
AU - Chen Qun
AU - Zhao Chenyu
AU - Tan Chengbing
AU - Arbad Ahmed Mohamed Hamad
JN - Thermal Science
PY - 2021
VL - 25
IS - 6
SP - 4117
EP - 4125
PT - Article
AB - Improving the constant weight rates of weighing bottles and evaporation  dishes is beneficial to drug quality control. When different quantities of  weighing bottles were dried under the same conditions, the greater the  quantity is, the lower the constant weight rate will be. When quantities are  controlled to be the same, weighing bottles that have been cooled for 50  minutes have higher constant weight rates than those cooled for half an  hour. Without being affected by other factors, weighing bottles' constant  weight rates are higher when the bottles are dried at the temperature of 180°C than 105°C. The rate increases when the bottled are dried for 8 hours  instead of 5 hours. After soaking for 48 hours in the solution of 2% HNO3 +  6% HCl, the weighing bottles and evaporating dishes gain higher constant  weight rates. Being more efficient, faster, economical and practical, this  experiment has improved the method to increase constant weight rates of  weighing bottles and evaporating dishes, without the need of auxiliary  equipment, and thus increased the accuracy of drug weighing results.