Dear All,

         I have got initial crystals in a condition with PEG 1000. The PEG 1000 
stock we had in our lab was rock solid and when i heated it to about 50 degrees 
for 15 to 20 minutes it became a solution. We thought the compound has got out 
dated or something like that and bought a brand new bottle from Sigma and this 
is rock solid too.

        Is this something characteristic of PEG1000? The hit condition says its 
12.5% w/v PEG 1000 but it apparently seems i could never get a powder of it.

       So my question is, Can i go ahead using this melted solution form of 
PEG1000 for setting up optimizations?

Thank you all in anticiaption,
Vasan


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