Re: [ccp4bb] Are Calcium Citrate Crystals A Common False Positive?

[Jim Pflugrath]

That's an easy hypothesis to test.  Simply set up your drops with the same 
conditions except without protein and see if you get crystals.  Please let 
us know the results.  Thanks!

Jim
On Tue, 29 Apr 2008, Sam Stephenson wrote:

Are calcium citrate crystals a common false positive in trays with up to 
200mM of each?  There is absolutely no phosphate in the trays so I'm 
almost positive they're not calcium phosphate. Cheers, Sam