Device and method for measuring alkalinity of water sample

• Main Authors: LYU YUNCHANG, CHEN YUNLONG, BIAN BAOLI
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a device and a method for measuring the alkalinity of a water sample. The device comprises a controller, a measuring part and a sample adding part. The measuring part comprises a water sample container, an emitting module and a receiving module. Light emitted by the emitting module and the receiving module penetrates through a water sample to be measured, the received voltage value of the water sample to be measured is measured, so that two titration end points are accurately identified according to the change of the voltage value. Automatic titration and measurement are realized, manual titration and manual end point judgment are completely replaced, relevant standards and methods are met, and the phenolphthalein alkalinity and total alkalinity of water can be accurately measured in real time. Compared with the method for determining the color change range of an indicator by observing the color change of the indicator with naked eyes, the device and the method have the advantages tha