GZ32/5V4G MULLARD/ PHILIPS -MINIWATT TESTED WITH ROETEST D-GETTER BLACK PLATES. The tubes passed all quality tests vacuum, leaks, shorts etc. , measured with Roetest, curves analyzed.
In photos you can see example of data for each tube. Tested with Roetest V10, "the Rolls Royce of tube testers" [emissionlab quote], a wonderful german professional system for testing tubes, it shows everything about a tube.
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