Cleaning Spice & other old calculators

[Katie Wasserman]

(03-30-2015 06:01 AM)Dieter Wrote:  Is isopropyl alcohol safe for the painted labels below the keys? And what strength do you recommend? The usual 70% or something different?

I would not clean painted labels with alcohol at all, just use Novus #1, that's safe in my experience. However alcohol (I use 99% isopropyl) on the case works great for removing ink and I've never seen it damage the plastic.