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Old 12-05-2013, 01:16 AM   #11
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Goo gone is what I used. I initially soaked in PBW to get the paper portion off and then used some mineral spirits, which did dissolve the glue. The down side was that it had this chemical smell so I switched over the goo gone. This did the trick but goo gone ain't that cheap.

One other thing, about this process. Before I did the White Lab tubes, I put my beakers and Pyrex flask in the pressure cooker. I did fill the beakers and flask about half way with water. I got this heavy white residue up to that level. Has anyone else experienced that.

I'm wondering if it is a result the minerals in the water. We have Cleveland municipal water with low Calcium and Magnesium content so I can't understand what it is. Any comments would be appreciated.

BTW, thanks for the previous helpful comments.
BB



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Old 12-06-2013, 04:11 PM   #12
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Quote:
Originally Posted by bbbrew View Post
Goo gone is what I used. I initially soaked in PBW to get the paper portion off and then used some mineral spirits, which did dissolve the glue. The down side was that it had this chemical smell so I switched over the goo gone. This did the trick but goo gone ain't that cheap.

One other thing, about this process. Before I did the White Lab tubes, I put my beakers and Pyrex flask in the pressure cooker. I did fill the beakers and flask about half way with water. I got this heavy white residue up to that level. Has anyone else experienced that.

I'm wondering if it is a result the minerals in the water. We have Cleveland municipal water with low Calcium and Magnesium content so I can't understand what it is. Any comments would be appreciated.

BTW, thanks for the previous helpful comments.
BB
Adding some white vinegar to the water in the pressure cooker will prevent the mineral build up.


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Old 12-23-2013, 11:01 PM   #13
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Adding some white vinegar to the water in the pressure cooker will prevent the mineral build up.
Coming back to the beaker residue question. I put some of the residue in the SEM today to do a chemical composition and sure enough. Lots of Magnesium and Aluminum.




Navy_Chief, does the white vinegar combine with these elements to precipitate out?

Thanks, BB
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Old 12-24-2013, 01:42 PM   #14
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Congratulations, you win the most over-specified test equipment used in homebrewing competition. And possibly the internet.

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Old 12-24-2013, 04:22 PM   #15
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Dyqik - Didn't know I was entering into a homebrewing competition with this post. In fact, I was just looking for an answer to my original question on what was the film generated in the pressure cooker. I happen to be training the day earlier on this equipment and decided to try to run a simple test to see if I could navigate the series of button clicks and procedures to get an understandable results. Thought it might be interesting to share the aluminum / magnesium oxide with the forum.

All the best.
BB

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Old 12-24-2013, 04:38 PM   #16
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I was making a joke, and complimenting you. I guess you haven't heard of the phrase "this post wins the internet" as term of geeky appreciation?

Should've used a smiley I guess...

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Old 12-24-2013, 07:50 PM   #17
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Thanks for the clarification. No harm no foul. BB



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