Akademik Veri Yönetim Sistemi
6th International Eurasian Conference on Biological and Chemical Sciences , Ankara, Türkiye, 11 - 13 Ekim 2023, ss.325
Determination of pH value is considered to be a critical measurement utilized in a large number of applications.
It is mainly used to evaluate the acidity of aqueous solutions in order to classify them as acidic or alkaline.
There are several pH measurement methods. The most conventional and widely utilized method is the use of
pH strips. While they have a lower level of precision than pH meters, they are known to be an economical and
affordable measurement method to be used by non-experts users. The major drawback of this method is the
large possibility of having scientific errors due to the limited ability of human eyes in precisely reading the
strip's value, especially when highly accurate results are required. However, the availability of advanced
technology and mobile phones nowadays provides a great advantage to overcome this challenge. For this
purpose, a literature review was conducted about utilization of image processing in determining the accurate
pH value from reading pH strips; by taking a picture of it using a mobile phone camera and analysing the color
differences. Many researchers reveal that it is possible to determine the pH value by comparing the color of
the strip with the reference solutions associated with the pH levels. Each researcher used this method for
determining pH value for a specific substance. Our goal is to investigate the most recent applications that
determine the pH value of solutions from the pH strips, providing essential information for researchers that
aim to develop a mobile application regarding the determination of the pH value.