Re: Discolouring of a GPO 746 phone?
I took my yellowed white Northern Electric 10 button 1554 and soaked it in some peroxide and warm water in the sunshine. Started around 10:00am and finishing up at 4:30. It wasn’t too bad considering the clouds covered the sun every now and then. Had it been sunny all day it would have taken less time.
Just soaked it in 1 part 20% peroxide and 4 parts warm water in the sunshine for about 6 1/2 hours. In this case 4 Gallons of warm water (15.12 L) to 1 Gallon 20% peroxide (3.78 L)
Make sure you wear rubber gloves when working with this mixture.
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