The Coronavirus pandemic or Covid-19 caused by Corona Virus which spread widely in 2020 is very dangerous because it threatens the safety of humanity by means of very fast and easy transmission. One of the most popular prevention efforts is the use of disinfectants to eradicate the corona virus. This study examines an automatic disinfectant mixer which uses a flow meter sensor to meas... https://www.ealisboa.com/quick-save-Pentair-Female-to-Female-Hose-Adapter-4-For-Sectional-Hose-K21241B-top-mega/