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What did you get today?
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TinWhisker Offline
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Post: #7181
RE: What did you get today?
(16-01-2019 05:15 PM)Don Wrote:  I suspect that heat had more to do with it than the ultrasonic treatment. But who knows?

Yes... at 60c the VG becomes much more miscible and the mix incorporates much more readily. The USC is really just for popping the zillions of bubbles that comes from the shaking. Add in a high sheer type homogenizing thingy (not open to the atmosphere so the volatiles don't escape) and you could mature your mix in minutes rather than hours or months. Pretty spiffy.
16-01-2019 05:18 PM
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Don Offline
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Post: #7182
RE: What did you get today?
Since the bubble formation in ultrasonics is due to cavitation it is extremely high-shear. Considerably more than mechanical methods can provide. From memory, the equivalent of tens of thousands of pounds force.

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16-01-2019 05:27 PM
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TinWhisker (01-16-2019)
ecignut Offline
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Post: #7183
RE: What did you get today?
I think heat has a great deal to do with it as well - which raises the problem of contamination - bad things thrive with heat as well.
16-01-2019 05:35 PM
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Don Offline
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Post: #7184
RE: What did you get today?
Which is why I sterilise my containers first.

OK there is almost certainly some airborne contamination but the PG should be enough to handle that.

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16-01-2019 06:03 PM
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TinWhisker Offline
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Post: #7185
RE: What did you get today?
(16-01-2019 05:27 PM)Don Wrote:  Since the bubble formation in ultrasonics is due to cavitation it is extremely high-shear. Considerably more than mechanical methods can provide. From memory, the equivalent of tens of thousands of pounds force.

Wonder if our little home unit ultra-sonic cleaners can begin to approach the power of industrial units though. I think at least my wee little USC can't generate those forces. But nonetheless, it works in conjunction with the SV well, and I am not complaining or trying to get tit for tat or petty about anything. All happy here.
16-01-2019 06:53 PM
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ecignut (01-16-2019)
Don Offline
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Post: #7186
RE: What did you get today?
They will, just not in as much volume at a time. At least assuming they do anything at all.

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16-01-2019 07:23 PM
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TinWhisker (01-16-2019)
Don Offline
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Post: #7187
RE: What did you get today?
TW, your idea was most excellent!

The AC is very nearly ready. In only two months of natural steeping and 3 hours at 60C.

Since you're too far away to reach I'll have to ask you to reach round behind your back and give yourself a pat on the back.

Smile

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16-01-2019 08:13 PM
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Don Offline
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Post: #7188
RE: What did you get today?
Not being too keen on leaving the thing running overnight as I don't have a lid for the washing up bowl, I'm going to take it out and repeat the treatment in the morning or after work tomorrow.

I am actually vaping it just now. It is nearly there, but there is still a hint of harshness which I expect another three hours of heating to cure.

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16-01-2019 08:15 PM
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TinWhisker (01-16-2019)
TinWhisker Offline
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Post: #7189
RE: What did you get today?
Wow, that is a real testament. That's a 6-monther normally, right?
16-01-2019 08:50 PM
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Don (01-16-2019)
Don Offline
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Post: #7190
RE: What did you get today?
Yes. It's had 2 and I'm vaping it.

I'm going to try to get that down to a day or so.

I plan to make up a few mixes based on it and give them all a long hot bath and see how it goes.

This time without nic. The nic containing stuff I tried visibly darkened over the 4 or so hours it got.

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16-01-2019 08:55 PM
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