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How to Make 0.1% Chlorine Solution to Disinfect Surfaces in Healthcare Settings

How to Make 0.1% Chlorine Solution to Disinfect Surfaces in Healthcare Settings
Updated Jan. 8, 2021

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Use 0.1% (1,000ppm) chlorine solution to disinfect frequently touched surfaces and items.
Make new 0.1% chlorine solution every day. Throw away any leftover solution from the day before.

  1. Make sure to wear required PPE.
  2. Proceed with only one of the following: 2a or 2b or 2c

    2a From Liquid Bleach (5%)
    Pour 400mL of liquid bleach into a 20L bucket, then fill with water to 20L mark
    (or pour 1 part liquid bleach and 49 parts water for any volume).


    2b From HTH (70%)
    Add TWO tablespoons (30g) of high-test
    hypochlorite (HTH) (70%) to 20 liters of water in a bucket.


    2c From Chlorine Powder (35%)
    Add FOUR tablespoons (60g) of chlorine powder (35%) to 20 liters of water in a bucket.

  3. Stir well for 10 seconds, or until chlorine powder/granules have dissolved.
  4. Wait 30 minutes before use.
  5. Label bucket “0.1% Chlorine Solution – Disinfecting. “
  6. Cover bucket with lid. Do not store in direct sunlight.

Supplies needed

  • Tablespoon
  • Graduated 1-L bottle or measuring cup
  • Bucket with lid
  • Water
  • 5% Liquid bleach OR 70% HTH OR 35% chlorine powder
  • Stick for stirring
  • Label

Do NOT mix chlorine solution with other cleaning products or chemicals.

Do NOT put chlorine solution in mouth or eyes.