- Both process used for controlling of microorganism.
- Fumigation activity banned by different regulatory guidelines because negative effect(causing of irritation to the eyes, nose and skin) .
- Fogging is a technique.
- This technique used for killing of microorganisms.
- Which is directed by a blower and vaporized spray.
- This process require fogging machine and fogging solution (Fumigant).
- By these fogger machines solution is sprayed in the area in form of aerosol.
- The small particles of disinfectant solution suspend in the air for long time and kill all the air borne bacteria,fungus and their spores.
- This is very effective way to control the contamination.
- The recommended ULV (Ulta Low Volume)fogger used for fogging.
- Fogging purpose Hydrogen peroxide vapor or Virosil is better.
- Fumigant valid 6% Hydrogen peroxide, 10% Hydrogen peroxide and 20% Hydrogen peroxide used for better controlling of microbes.
- Virosil (mixer of Hydrogen peroxide 10% and Silver Nitrate 0.01%Approximate pH 1.5).
- Market available different brand names.
- Fogging is safer activity.
- Defogging is not necessary.
Fumigation:
- This method used for Formaldehyde solution and Potassium permangnate chemicals.
- These method generate the fumes and effectively kill the bacteria, fungi and spores.
- This is very effective method for controlling the microorganisms.
- These chemicals are carcinogenic because cause to irritation,to the eyes, nose and skin.
- carcinogenic means cancer causing or risk of cancer.
- It is not safer for the personnel who is handling this chemicals.
- After completion activity defumigation is required at least 6 hours.
operation :
- Before stating the Fogging/ Fumigation activity Keep the area Under Fumigation/ Fogging.
- Stop the AHU Up to Closing the Fumigation/ fogging activity.
- After completion of the activity continuously circulate the AHU (Air Handling Unit)at least 6 hours.
- Frequency : Fortnight or whenever expose the cultures.
How to calculate the Area Volume:
- Area length x Width x Hight
Calculation total qty of liquid
= liqiud (ml) = volume X applicatio rate
(800ml/ 1000 cubic meter(M3)
= 1464 X 800/1000 = 1171 ( 1200 ml)
Calculate Foggining Time:
= total liquid / flow rate
= 1200/ 70 = 17.14 minuts (20 minuts)
- application rate based on the fogger/fumigator flow rate.
How to calculate the hydrogen peroxide percentage:
1000/ 30 % H2O2 X 6% = 200
=1200/30 % H2O2 X 6%
=240
