论文部分内容阅读
1概述 依据《GB/T611-1988化学试剂 密度测定通用方法》测量方法,在环境条件为(20±0.1)℃,采用PZ-A-5液体比重天平(以下简称“天平”)作为测量仪器。 安装好天平,将测锤挂在横梁的右侧小钩上,旋转调整螺丝,使横梁左侧两指针对正。向玻璃简内注入蒸馏水
1 Overview According to “GB / T611-1988 Determination of chemical reagent density method” measurement method, the environmental conditions (20 ± 0.1) ℃, the use of PZ-A-5 liquid specific gravity balance (hereinafter referred to as “balance”) as a measuring instrument. Install the balance, the measuring hammer hanging on the right hook on the beam, turn the adjustment screw so that the two beams on the left pointer is positive. Into the glass Jane into the distilled water