|
|
Post by aspiringbiomed on Apr 10, 2024 23:37:03 GMT
Hello,
Please guide me as I am confuse as to which is right. From my knowledge making 1/10 bleach is 10 parts water and 1 part bleach and not 9 parts water and 1 part bleach. Which is correct?
|
|
|
|
Post by Biomed on Apr 11, 2024 2:00:10 GMT
1 part bleach and 9 parts water will give you a 10% bleach solution.
|
|
|
|
Post by dave74 on Apr 11, 2024 2:32:43 GMT
Where do you use 10% bleach?
|
|
|
|
Post by aspiringbiomed on Apr 11, 2024 3:25:23 GMT
In my clinic and I think all of FMC has 1/100 which they use for machine wipes/chairs and 1/10 which is used for blood spill.
|
|
|
|
Post by Chuck Weddle on Apr 11, 2024 11:18:03 GMT
Soapbox time:
Standard bleach starts out at 5.25% (Sodium Hypochlorite/Free Chlorine). If you dilute it by 9 (or 99), how does it become 10% (or 1%)?
I know, "EVERYONE" calls it that. That doesn't make it right!
If your name is Carl but "everyone" calls you Bubba....Is Bubba the name you sign on a document? (if you do, a lawyer would have a field day with you).
At the very least it should be expressed as the ratio that it is mixed, 1:9 or 1:99 (mathmatically the correct expression).
Since bleach comes in different strengths, to actually be correct, it should be expressed in ppm or mg/L. The CDC guideline (and CMS regulation) specify 300-600 ppm of Sodium Hypochlorite/Free Chlorine for normal surface disinfection.
We (biomeds) are supposed to be more technical/scientific. Why aren't we?
|
|
|
|
Post by dave74 on Apr 11, 2024 13:49:07 GMT
|
|
|
|
Post by Chuck Weddle on Apr 11, 2024 13:57:41 GMT
Confusing is putting it kindly....its downright WRONG. |
|
|
|
Post by dave74 on Apr 11, 2024 15:50:35 GMT
From AAMI/ISO 3.10
3.10 germicidal bleach: solution of 5.25%–6.15% sodium hypochlorite typically diluted in water at 1:10 or 1:100
for use as a disinfectant.
NOTE Sodium hypochlorite solutions used for disinfectant should not contain thickeners (e.g., thick beach,
splashless bleach) or scents (e.g., coconut, fresh scented, lemon, lavender, pumpkin spice, etc.).
Sometimes you just have to laugh.
|
|
