San Jose, Nina Elaine C.
Determining the pH level of water in different water stations in Barangay Concepcion Uno, Marikina City in correspondence to the environment protection agency standards with the use of litmus paper. - Marikina City March 2019 - vi, 55pages; illustration; 28cm
Includes: references and appendices
1. Drinking water -- Philippines -- Standards
TD 430 / V36 2019
Determining the pH level of water in different water stations in Barangay Concepcion Uno, Marikina City in correspondence to the environment protection agency standards with the use of litmus paper. - Marikina City March 2019 - vi, 55pages; illustration; 28cm
Includes: references and appendices
1. Drinking water -- Philippines -- Standards
TD 430 / V36 2019