Hello,First of all ...

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Hello,First of all conventional chlorine disinfection is Bleaching powder.We can use liquid chlorination with Hypo(Naocl) or Solid calicium hypo chloride.

Alternatives are UV disinfection and Ozone method.Ozone is perfect to remove virus and bacterias.UV is also good for bacterias except HE.

Also the study of microbes can be done with test tube or petriplates.