Preparing SolutionsSolution Preparation
Posted 29 October 2012 - 11:24 AM
I have the following recipe for a solution that I need to prepare:
(NH4)2SO4 --------- 2.0%
MgSO4 x 7 H2O---0.25%
CaCl2 x 7 H2O ----0.16%
If I am to understand this correctly. I could take 100 mls and add 0.6g, 2.0g, 1.2g, 0.25g, and 0.16g of appropriate item correct? It's just weird to see percentages.
Posted 29 October 2012 - 11:47 AM
Posted 29 October 2012 - 08:06 PM
I prepared the solution, but it precipitated after I autoclaved it. I'm thinking it's a pH problem, but how do I know what it is supposed to be? Or am I supposed to assume the pH is netural?
Posted 30 October 2012 - 02:02 AM
Posted 30 October 2012 - 05:55 AM
Wouldn't filtering take out the benefit of the Potassium Phosphate from the media though?
I tried to bring the solution to neutral pH and it made it worse with even more ppt. So, I went back the other way to acidic which helped dissolve the remaining ppt. However, did I just mess up the salt solution, thus, my media that I'll be putting my salt solution into?
How can I figured out what the pH is supposed to be?
Posted 30 October 2012 - 03:39 PM
Add them after cooling. You may see something cloudy forming at the time you add magnesium sulfate and calcium chloride, just mix the solution well and it will disappear.
Edited by El Crazy Xabi, 30 October 2012 - 03:41 PM.