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Operator Cleaning and Disinfection

Making Chlorine Household Bleach Solutions

printable fact sheet for operators


Low Level
Disinfectant

(1:500 dilution of bleach (5.25%) to water)

Intermediate Level Disinfectant

(1:50 dilution of bleach (5.25%) to water)

High Level
Disinfectant

(1:50 dilution of bleach (5.25%) to water)

Low level disinfectant is for items that come in contact with intact skin, or items that do not ordinarily touch the client.
Used for routine housekeeping

Intermediate disinfectant is for items that come in contact with nonintact skin or mucous membranes but do not penetrate them.

High level disinfectant is for items that come in contact with nonintact skin or mucous membranes but do not penetrate them or for cleaning blood spills.

1 tsp of bleach with 10 cups of water

2 tsp of bleach with 2 cups of water

2 tsp of bleach with 2 cups of water

5ml of bleach with 2 ½ litres of water

10ml of bleach with 495ml of water

10ml of bleach with 495ml of water

10 minutes

10 minutes

20 minutes

Additional Notes:

  • Area or equipment for disinfection must be cleaned with soap and water before being disinfected.
  • A new bleach solution must be made fresh daily.
  • Ensure bottles used for bleach solutions are labelled.

For more information please call Peel Public Health at 905-799-7700 and ask to speak to a public health inspector.

Adapted from and used by permission of the Durham Region Health Department and Toronto Public Health



Clean, Disinfect, Sterilize

Customer Information | Operator Information | Contact a Public Health Inspector |

Revised: Monday May 02 2011

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