刻度量瓶的改进与完善与应用拓展

有报道将1000 mL和2000 mL的容量瓶改进为带分度刻度容量瓶,使容量瓶的细颈部分有额定容积±0.5%的刻度,为直接配制指定浓度的滴定液带来很大方便。但笔者认为,此改进方法还可进一步拓展完善,不只局限在1000 mL和2000 mL的容量瓶,可应用到较小体积容量瓶上,且细颈部分刻度也不只局限于额定容积的±0.5%之间,只要内径均匀,细颈部分均可有分度刻度。另外,制作工艺还有具体要求,其用途在仪器校正、溶液配制等方面还有很大拓展空间。

In december 1988, Tianjin Soda Plant of Comrade LIU Decai to 1000 mL and 2000 mL volumetric flask to improve the volumetric flask with sub-degree scale, so that the narrow neck part of the flask volume have rated scale ±0.5% of the volume, for direct preparation of the specified concentration of great convenience of the titration solution. But I think that this improved method can be further development improved, not only limited to 1000 mL and 2000 mL volumetric flask, can be applied to all volumetric flask, and the narrow neck part of the scale is not limited to the rated capacity of between ±0.5%, as long as uniform diameter, narrow neck can those have some degree of scale. Moreover, the manufacture craft also has the specific request, Its uses in equipment calibration and solution preparation etc has the very big development space.