Quantifoil hole sizes off?
D. Prabha Dias, PhD
prabha at caltech.edu
Mon Feb 23 17:44:47 PST 2004
We've found that recent batches of Quantifoil grids have hole sizes
that are significantly larger than the specifications. We're using
200 mesh Cu/Rh grids with either R2/2 foil or R1.2/1.3 foil,
carbon-coated at the factory. The most recent batch of R2/2 appears
to have holes that are approximately 2.7-2.8 microns in size, while
the R1.2/1.3 foil appear to actually have ~1.9 - 2.2 micron holes.
Has anyone else had similar experiences? Thank you for your time &
D. Prabha Dias, Ph.D.
E.M. Scientist, Jensen Lab
Division of Biology
California Institute of Technology
1200 East California Blvd.
Pasadena, CA 91125
email: prabha at caltech.edu
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