RK-40 tape (Scotch or Basf): anyone knows it ?

Hello,

I got a number of RK-40 pancakes recorded some 30 years ago. These are Scotch / Basf (can' recall the right one as writing this) and I wanted to know how good they are, they will develop stickiness or if the oxyde turns into powder, etc. I checked the two AES tables for BASF and other tapes but this RK40 type doesn't exist there.


Thanks,

David.
 
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