[3dem] Calcium free filter paper

[Jing Wang]

Hi there,
I'm working with a complex of calcium sensor protein, which dissembles upon
exposure to calcium. The complex fell apart after freezing and I suspected
it might due to the  residual calcium from the vitrobot blotting paper. Is
there a commercially available calcium-free filter paper or is there a
protocol for cleaning up the regular filter paper? Any comment will be
greatly appreciated!!
Jing
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