Author: Don Berger
Date: 1999-07-22 18:29
All levity aside, thanks, Herb, you bring up a concern re: H R mp's which we discussed at some length, maybe here and/or on "Early Clarinet", a short time back, related to the composition of the hard rubber, its "vulcanizing [sulfur] and weighting [metal-lead etc] additives", which have changed over the years. The older H R's would take on a brown or greenish coloration, which I attributed to oxidation by O2 of the air, but would be severe with a peroxide [hydrogen or sodium]. It may be possible to remove if its only a surface coating, I may experiment when I can. Mark C may be able to help find our posts. Glad you brought up this hazard to mp cleaning. Don
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