Isolation Passive/Active???

Albert is right.
There are only a few serious designs out there and vibraplane is without among the top.

I saw rack, well, they use glass shelfs. From my experience, that is really problematic from resonance, it looks good from optics, but the result is normally bad. I tried it and I will never go back to something like that.

Try taking a look at these racks. They look to be very well engineered although i don't know about the actual shelves / shelving material being used. I think that you could do better in that respect.... Sean
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Grand Prix Audio

Thanks Albert. You "jogged" my memory and Vibraplane is indeed what I was attempting to recall. Thanks.

The Vibraplane is commonly used for microscopes and in the audio world. They have both active air and passive air models (with and without pump). They are expensive at around $4000.00, but are highly effective at isolating components.