Q. How do you clean oxides from light bulb filaments?
A. When cleaning oxides from light bulb filaments our recommendation is 8% Citrajet for a contact time of at least 3 seconds at about 140 deg F.
In principle, every 10 deg C you go up, doubles the cleaning speed.
At 185 deg F, you would be roughly 20 deg C higher in temperature and would clean the same filament in 0.75 sec.
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