Carpet turned yellow | TruckMount Forums #1 Carpet Cleaning Forums

Carpet turned yellow

license2Clean

Member
Apr 10, 2008
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calif
How do you correct yellowing on a light gray carpet./wool blend ?

Did not neutralize prespray.{chemical injection on tm failed to inject carpet rinse}

Notice a yellow tint when carpet dried.

Thanks 4 your help.......
 

Jason Whaley

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Nov 13, 2008
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Acetic Acid 5% (bad smell so use as a last step only with plenty of ventilation it has a vinegar odor)
or
Chemspec Browning Treatment
or
Prochem Yellow RX

I'm sure there are a lot more but I have used these with good results.
 

Bobby

New Member
Oct 6, 2006
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Zebulon, NC
If it was due to excessive PH above 10 any of the products mentioned above will do the job. Just mix put in a sprayer and put it down moderately. It will turn almost on contact.

I hab this happen to me once and Chemspec Browning Treatment I had on my van did the trick! :AddEmoticons04233:
 

Scott W

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Feb 14, 2006
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There are many possibel causes for a yellow tint following cleaning. Fortunately the same solution works for several different problems - get the fiber over to the acid side.

This can be accomplished by
1. An acid rinse
2. A neutralizing post spray such as Fab Set
3. Post spray with acid. Acetic acid / white vinegar (5% solution) will work but has odor. Citric acid (12 to 14 ounces per gallon) works without the odor but can leave a slight residue that will attract soil. A combination of Fab-Set (4 ounces), Citric acid (10 ounces) and a galon of warm water will not have the odor and will have less soil atracting residue than citric acid alone.

Rake in whatever you apply to help get it all the way to the bottom of each tuft.

Scott Warrington
 

TechnicRay

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Jan 20, 2009
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Sodium BiSulfate will work as well. Smells awful though. Gotta watch using those hi pH on wool.
 

cook28

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Jan 31, 2009
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Been there done that, Acid rinse works well. I typically use acid rinse with high PH products to prevent this correction. Only takes another few minutes and saves return trips and increases consumer satisfaction.