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- Posts: 2
- Joined: Thu Oct 07, 2010 4:00 pm
- Location: Malaysia
the questions are:
1. i used water:acetonitrile (7:3) as solvent to mix with the RP-18 powder, but it seems the powder floating on the solvent and formed lot of bubble. is it my solvent system got problem? or i use the wrong solvent?can anyone help me on this?
2. the flow rate is quite fast from the beginning when i pour the slurry inside the glass column, and the flow rate become slower and slower. it takes 5-6 seconds to drop out 1 drop. but the length of the powder inside the column is just 15cm height. it is still need to pack more right if not mistaken? i took 2 days to pack it, but still not yet finish to pack til 1/2. can anyone help me to solve this problem?
3. basically is there any standard ratio on how tall we should pack for the column or just depend on our preference??
hope to get all the expertise's answer here, bcoz i really confuse and frustrated on what i m doing now..thank u so much... thanks a lot...