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Old 23rd April 2012, 12:23 PM   #1
diyAudio Member
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Default How to clean tubes?

Today I got a bunch of tubes. Most of them E88CC Philips, Siemens and TELEFUNKEN. The man who gave them to me, he had them in unsealed boxes. Tubes are very dusty and dirty. How should I clean them? What detergent should I use?

Please help.
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Old 23rd April 2012, 12:31 PM   #2
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Osvaldo de Banfield's Avatar
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Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina
Use any standard glass cleaner, best if alcohol based.

Osvaldo F. Zappacosta. Electronic Engineer UTN FRA from 2001.
Argentine Ham Radio LW1DSE since 1987.
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Old 23rd April 2012, 12:33 PM   #3
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Be care for if you want to keep the number & letter marked in the glass tube!!!!
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Old 23rd April 2012, 12:43 PM   #4
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Originally Posted by merlin el mago View Post
Be care for if you want to keep the number & letter marked in the glass tube!!!!
This can happen very easily. You could be mortified if they were valuable NOS tubes.

Brasso or Silvo on the pins, although just fitting them is probably enough.
Tube Care
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Old 23rd April 2012, 12:51 PM   #5
Mooly is offline Mooly  United Kingdom
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Warm water with a tiny drop of detergent and a very soft (artists ?) brush, then rinse and pad dry.
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Old 23rd April 2012, 05:25 PM   #6
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Location: Brazil
I get a label removed when cleaning a tube with water afew years ago. So now Iam very careful to clean tubes.
First I clean the tube with a soft dry brush, after it if need, I clean the tube with a wet soft cloth.
Alcohol definitely can remove the factory labels/codes.
>Never go to a psychiatrist, adopt a cat or dog from the streets. On the streets pets live only two years average.
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