Diluting device and method

Abstract

The invention discloses a diluting device. The diluting device comprises a solvent bottle, a stock solution bottle, a diluting bottle, a first peristaltic pump, a second peristaltic pump, pump pipes and a control device, wherein a liquid inlet of the first peristaltic pump is communicated with the solvent bottle through the pump pipes, and a liquid outlet of the first peristaltic pump is communicated with the diluting bottle through the pump pipes; an inlet of the second peristaltic pump is communicated with the stock solution bottle through the pump pipes, and an outlet of the second peristaltic pump is communicated with the diluting bottle through the pump pipes; the first peristaltic pump and the second peristaltic pump are electrically connected with the control output end of the control device respectively, and a temperature sensor for being immersed into a solution to detect the temperature of the solution is further arranged on the control device. The diluting device is high in dilution accuracy and low in facility cost and is simple and convenient to operate.

Description

technical field [0001] The invention relates to a dilution device, in particular to a peristaltic pump type dilution device and method. Background technique [0002] Accurate dilution refers to the process of adding a certain volume of solvent to a certain volume of stock solution to obtain an accurate target solution. Some use artificial dilution methods: professional chemical inspectors use pipettes, volumetric flasks and other accurate measuring devices to accurately dilute the stock solution to the target solution. This process requires high levels of laboratory technicians to operate and test, and requires many steps and takes a long time. , Manual calculation is required, which often leads to unsatisfactory accuracy and precision of the dilution results; currently the weight dilution method is mainly used in the market: use a balance to weigh and display the weight of the original solution and the weight of the added solvent, and after setting the dilution factor, Mak...

AI Technical Summary

Problems solved by technology

Some use artificial dilution methods: professional chemical inspectors use pipettes, volumetric flasks and other accurate measuring devices to accurately dilute the stock solution to the target solution. This process requires high levels of laboratory technicians to operate and test, and requires many steps and takes a long time. , Manual calculation is required, which often leads to unsatisfactory accuracy and precision of the dilution results; currently the weight dilution method is mainly used in the market: use a balance to weigh and display the weight of the original solution and the weight of the added solvent, and after setting the dilution factor, to dilute

This is a gravimetric analysis method, but because the density of the stock solution and solvent is affected by the concentration and temperature, its repeatability is 1%, and it cannot break through to higher precision

Images