A student plans to carryout an acid-base titration using 0.5 M NaOH and HCl with an unknown concentration. He must gather the equipments/chemicals (apart from NaOH and HCl) necessary to perform the experiment. Select the necessary equipments/chemicals that is/are required to successfully complete his experiment. Select all that apply
A Buret
B Indicator
C Bunsen burner
D Para Film