sp5der
Subscriber
Of course. Always try to respond as fast as I see it. Appreciate ur supportBrother. Thanks very much for your speedy comms over email. Really appreciate this clarification and excited to try the Mig812 when the time comes.
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Of course. Always try to respond as fast as I see it. Appreciate ur supportBrother. Thanks very much for your speedy comms over email. Really appreciate this clarification and excited to try the Mig812 when the time comes.
The variance you get from a labtest at Jano is more than the % of error you can get from simply using a scale and converting ml to gr.So you use recipe with displacement calcs?
To achieve even close to similar accuracy with displacement method as vol flask method means all your inputs have to be highly accurate and those densities themselves are accurately measured using a volumetric flask.
In the end you have to have a very accurate way to measure volume one way or another since your API concentration is mg/ml. It is either baked in up front on your displacement values or measured on the back end for total solution volume.
With volumetric flask method you have two error sources...
(1) mass of API
(2) volume of batch
Any other method would have more than two error sources. That's important when considering propagation of error.
The volumetric flask method meant to simplify his life, not complicate it. Hence the additional $$$. Would be asinine to spend more money for less accurate/precise equipment/process.
Most accurate and precise method by far. It is how standardized reference solutions are made for molarity with extremely high accuracy (e.g., less that 0.1% error at 1 L volume).
Agreed...
Considering the variance allowed in the official pharmacopeia one would be better off trying to use the method that involve the least work and time while still maintaining a reasonable level of accuracy.
Just the procedure for cleaning those volumetric flask is a lot of time wasted that could be used in a much more productive way.
I still feel the scale is a superior improvement for really not much work at all, takes 2 minutes to multiply the values of the ingredients and then pour it in the beaker while watching a scale display, using a simple smaller beaker as the pouring vessel allow one to pour exactly what is needed with an error of 0.XX that in real life translate to zero.Agreed..
What is much more reasonable for regular Brewers? Lol
Graduated cylinder = g2g
I respect your opinion. I have yet to see what Jano's true HPLC method precision is. Gonna depend on the analyst as well. I posted above his instrument precision much less that 1% based on what he shared.Is volumetric flask more accurate? Sure, is it needed or even worth it? In my opinion is not. Plus it's a lot more work for maybe a 1% more accuracy, same accuracy that get squashed by the variance of Jano labtest.
dont people do this by default? feel like its so common in hand with meal prepping.I still feel the scale is a superior improvement for really not much work at all, takes 2 minutes to multiply the values of the ingredients and then pour it in the beaker while watching a scale display, using a simple smaller beaker as the pouring vessel allow one to pour exactly what is needed with an error of 0.XX that in real life translate to zero.
Clearly not or being deceptive on their batch definitions. Some of the vial to vial variance within what is claimed to be same batch is wild.dont people do this by default? feel like its so common in hand with meal prepping.
No they don't.dont people do this by default? feel like its so common in hand with meal prepping.
Do u mind linking ur scale to meNo they don't.
Most brewers use graduated cylinders and it's not bad but I find it annoying and so much shit to clean all the time. Plus those graduated cylinders can have some hefty error sometime and you need multiple size of them too.
Some just use graduated beakers xD and you can tell
Since I started using the scale method I never looked back.
Once you dial in your displacement values on multiple iterations I will accept it, xD. They will only be as good as Jano's error though, haha.Since I started using the scale method I never looked back.
just find any scale with the measurements big enough and are accurate 0.5g precisionDo u mind linking ur scale to me
But then they want accurately dosed products.
Yep, you are right. Forget about that. 223 mg/ml "better" than 200 mg/ml for TC200. Smh.Female products aside, i don't believe it to be true.
Most here would rather slightly overdosed products, not precisely dosed products and most importantly, not under-dosed products.
0.1g precision isn’t good enough. 0.001g is only accurate to 0.01g for example. And any scale doesn’t work. Mine was expensive but I want to compare it to what he has. It seems we spent very close to the samejust find any scale with the measurements big enough and are accurate 0.1g precision
Yep, you are right. Forget about that. 220 mg/ml "better" than 200 mg/ml for TC200. Smh.
Sp5der appears to be aiming higher than regular. Interested to see what he comes up with.regular Brewers
0.1g precision isn’t good enough. 0.001g is only accurate to 0.01g for example. And any scale doesn’t work. Mine was expensive but I want to compare it to what he has. It seems we spent very close to the same
Well let's see what happens if a vendor starts delivering 1-2% variance consistently.220? no
205-210.
Pharma variance is 10% after all.
That test was 250 btw.
The vendor got hell for it.
If it was 260? it'll be praised to heavens.
I mean yeah what is 0.1g not much when ur brewing a kilo or more at a time but still
xiaomi scale 0.1g precision under 1000g. what is 0.1g compared to brewing 400gtest? even less than its 0.0x%
and its rather cheap
no worries, i actually trust the brand xiaomi, i both have their watch which is better than apple watch and their scales all over my home. leading tech giant in china. its a good brand.I’m not trusting a $20 Chinese scale. More than happy to spend money on something good, I already have, way before even thinking of starting this actually just curious on what he uses.
