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What causes whitish "haze" inside tube?

Recently some new production 6L6 tubes advertised as "B" stock, with a slight milky-looking haze at the bottom by the base and up at the top around the flash. Presumably this is an artifact of the manufacturing process, but supposedly doesn't affect the test values of the tube. Any input regarding the source / effect of this phenomenon, implications for use?


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Topic - What causes whitish "haze" inside tube? - Dingojazz 05:54:40 02/02/06 (8)


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