Re: [DIYbio] Re: Low cost PCR(under development)

> What are they doing differently?

In addition to what others have said, the tube block has a lower mass
than the OpenPCR block. The OpenPCR block is a solid block with holes
drilled in it. If you look at newer machines from BioRad, Thermo,
etc, they have designed the block to have a much smaller mass while
having the same surface area in contact with the tubes. See this
picture: http://www.bio-rad.com/webroot/web/images/lsr/products/amplification_pcr/product_overlay_content/global/lsr_cheese_block_expand.jpg
But as far as I know, shorter ramp rates just means shorter run time.

-cory

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