论文部分内容阅读
25型酸度计是药品检验中最常用的检验仪器,我们在使用25型酸度计过程中遇到一些现象,在测量标准pH溶液时,按下读数开关后定位调节器调节范围很小,起不到补偿玻璃电极的不对称电位的作用。检查仪器部分没发生故障,电极部分玻璃电极完整无损,甘汞电极新充以饱和氨化钾液也排除不了上述故障。后经仔细分析发现故障的原因在于甘汞电极下端的素烧瓷的细毛孔堵塞造成。更换新甘汞电极后故障排除。
Type 25 acidity meter is the most commonly used inspection instrument in drug inspection. We encountered some phenomena during the use of type 25 acidity meter. When the standard pH solution is measured, the adjustment range of the positioning regulator is very small when the reading switch is pressed, and if not, To compensate for the effect of the asymmetric potential of the glass electrode. No part of the instrument was inspected for failure. The glass electrode of the electrode part was intact, and the calomel electrode was completely filled with saturated potassium ammine solution. After careful analysis, the cause of the fault was found to be caused by the clogging of fine pores in the lower ceramic firing electrode of the calomel electrode. Replace the new calomel electrode troubleshooting.