Keychain Based Liquid Testing System

Christo Ananth et al. discussed about a disclosure which is made regarding an apparatus to identify any toxic material contaminating into any drinkable liquid consumed by the humans or animals. A drop of any form of liquid can be taken and can be dripped onto the sensor of the keychain so as to identify whether the liquid has any unwanted formulation which is not safe to consume. The Keychain is programmed with color changing indication system to notify the purity of the liquid or otherwise any contamination if identified.