The pH value of dishwasher capsules mainly affects tableware in terms of cleaning effect, tableware residue, and the adaptability of tableware materials, etc. The following is a specific analysis:
pH value and cleaning effect
Alkaline environments promote decontamination: Dishwasher capsules are usually alkaline with a relatively high pH value. In an alkaline environment, grease and dirt are more likely to undergo saponification reactions, thereby being emulsified, dispersed and removed. Generally speaking, a pH value between 11 and 12 is conducive to cleaning. However, in recent years, in order to reduce the impact on the environment and the risk of human contact, the pH value of dishwasher detergent has shown a gradually decreasing trend. Ideally, under the premise of ensuring compatibility with enzyme stability, bleach performance, health and environmental issues, a higher pH value should be selected as much as possible to maximize the role of the alkaline mechanism. However, there is also the view that within this range (such as when the pH value drops to around 10), deprotonation of dirt still has certain benefits for the removal of eggs (proteins), but the removal of most dirt is achieved through the action of enzymes.
pH value and tableware residue
Residue control: If the pH value of the dishwasher capsule is too high or too low, it may cause residues on the tableware. When the pH value is too high, there may be alkaline residues on the tableware, making it look dull and feel like soap when touched. When the pH value is too low, it may not be able to effectively remove stains. Therefore, it is necessary to control the pH value of the dishwasher capsule within an appropriate range to ensure that the tableware has no residue after cleaning and remains shiny.
Residue detection: It can be determined whether there is any residue by testing the pH value of the residual water on the tableware after being washed by the dishwasher. Generally speaking, if the pH value of the residual water is close to neutral (such as pH=7), it indicates that there is no residue on the tableware.
pH value and the adaptability of tableware materials
Material influence: Tableware made of different materials has different adaptability to the pH value of dishwasher capsules. For instance, aluminium tableware may fade or darken in an alkaline environment because the alkaline components may have a chemical reaction with aluminium, affecting its appearance and lifespan. Therefore, when choosing dishwasher capsules, it is necessary to consider the material of the tableware and select the appropriate pH value range.
