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2. How Long Should You Let Cleaning Products Sit Before ... - AOL

   www.aol.com/long-let-cleaning-products-sit...

   “Contact time is often legally defined on disinfectant labels, while dwell time is more of a practical recommendation.” There’s also a deviation in application outcome: Dwell time improves ...

3. CT Value - Wikipedia

   en.wikipedia.org/wiki/CT_Value

   CT Values are an important part of calculating disinfectant dosage for the chlorination of drinking water. A CT value is the product of the concentration of a disinfectant (e.g. free chlorine) and the contact time with the water being disinfected. It is typically expressed in units of mg-min/L.

4. Rideal–Walker coefficient - Wikipedia

   en.wikipedia.org/wiki/Rideal–Walker_coefficient

   The arbitrary choice of contact time (sterilisation in 7.5 minutes), diluent (distilled water) and test organism (Salmonella typhi, then called Bacillus typhosa) did not reflect the conditions under which disinfectants were used. Because of this, impossibly high values were obtained for disinfectant activity and quoted by disinfectant ...

5. Disinfectant - Wikipedia

   en.wikipedia.org/wiki/Disinfectant

   A disinfectant is a chemical substance or compound used to inactivate or destroy microorganisms on inert surfaces. [1] Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores; it is less effective than sterilization, which is an extreme physical or chemical process that kills all types of life. [1]

6. Phenol coefficient - Wikipedia

   en.wikipedia.org/wiki/Phenol_coefficient

   So, the bactericidal activity of a particular disinfectant at a given concentration can be expressed as a constant (k) calculated by employing the formula k = N/C·T where N is the number of surviving cells, C is the concentration of agent applied and T is the time for which the agent is applied, so k is inversely proportional to dose (C·T is ...

7. Hand Sanitizer Won’t Protect You From Norovirus—but This Will

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   Norovirus cases are surging across the country, with the U.S. seeing more than double the number of outbreaks compared to this time last year. So, figuring out how to protect yourself from ...

8. Iodophor - Wikipedia

   en.wikipedia.org/wiki/Iodophor

   The optimum concentration is >200 mg/L free iodine with a contact time of 2 minutes and 100 mg/L free iodine for cleaned and dried equipment. [citation needed] In a nonfood-contact application the concentration may rise to 500 – 800 mg/L. [6]

9. 7 Spots You're Definitely Forgetting to Clean, According to ...

   www.aol.com/lifestyle/7-spots-youre-definitely...

   When it comes to keeping your home clean, most of us stick to the usual checklist.You know the drill: vacuum the floors, wipe down countertops, and scrub the bathroom.But even the cleanest and ...