Method and system for diluting solution

Abstract

The invention relates to a method and a system for diluting a solution. The method comprises the following steps: (1) inputting concentrations of different mother solutions and concentrations and volumes of target solutions; (2) according to the step (1), automatically calculating the volume of mother liquor and the volume of a solvent required by dilution; (3) judging whether the liquid preparation unit needs to be cleaned or not, and if so, executing the step (4) after cleaning the liquid preparation unit; if not, executing the step (5); (4) cleaning the liquid preparation unit and then executing the step (5); (5) sucking different mother solutions through a pipeline of the liquid preparation unit, and sucking air between the mother solutions to separate the mother solutions; and (6) after the mother solution is ouput to the container, outputting the solvent into the container through a pipeline of the liquid preparation unit, and uniformly performing mixing to obtain a diluted solution. The dilution method provided by the invention can effectively reduce the consumption of mother liquor, greatly reduce the cleaning frequency and save more cleaning water.

Description

technical field [0001] The present invention relates to the technical field of analytical chemistry, more specifically, to a solution dilution method and system. Background technique [0002] At present, solution dilution is mainly based on the traditional manual dilution method, and the automatic dilution equipment or devices appearing on the market are mainly based on two principles: volumetric method and gravimetric method. The accuracy of the traditional manual dilution method is high, but the glassware such as pipettes and volumetric flasks used must be qualified for measurement and verification, and if you want to prepare solutions with many concentrations, different volumes, or a wide range of concentrations, the preparation required There are many specifications of similar glassware, and the dilution time is also longer. Most of the current commercial automatic dilution equipment is aimed at biological samples, the preparation capacity is small, the dilution is sing...

AI Technical Summary

Problems solved by technology

Most of the current commercial automatic dilution equipment is aimed at biological samples, the preparation capacity is small, the dilution is single-point, the accuracy needs to be improved (accuracy is less than 2%), the dilution range is narrow, the gravimetric method is more accurate than the volumetric method, and the price is expensive. And limited by the laboratory environment, it is not suitable for on-site testing

Images