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dinfaralt said:
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.

you should probably look for something more expensive as you'll be expanding ugl even if he sends something with similar specs to mine you probably need upto 10kg or more to plan for the future. have a good day.
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Not saying the brand or product is bad I’ve never heard of them or used them. Take care.
 
readalot said:
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.

Also density of oil from one batch to another will move. See spec sheet on MCT for example.

Yes i realize no one gives a shit. But then they want accurately dosed products.
Click to expand...
The density for MCT is between 0.94/0.96 with an Average of 0.95 last 10 coa checked always 0.95

We are talking a 1% difference.

To give you an idea, and put things in perspective i sent to Jano 2 samples of raw from the same bag.
I got a 1.7% difference between the two results.

So what is an accurately dosed product? If one shoot for 250mg and get 260mg is that not accurate? That's a 4% over target.
I believe we are splitting hairs at this point.

To be honest I care a lot more about quality of the oil so all the ingredients, method of filtration, quality of the vials stoppers etc.

A fucking 5% difference under or over? Naaaaa even so I have brewed plenty of time on target I wouldn't care one bit for something 5+/- off.

What I inject is a lot more important then a 15mg difference on a 250mg product. Shit syringe variance of error is higher lol

I ain't feeling anyway that difference, but my body is gonna feel shitty quality solvents or carrier oil or contamination or whatever you can think off, that is important.
 
Sampei said:
The density for MCT is between 0.94/0.96 with an Average of 0.95 last 10 coa checked always 0.95

We are talking a 1% difference.

To give you an idea, and put things in perspective i sent to Jano 2 samples of raw from the same bag.
I got a 1.7% difference between the two results.

So what is an accurately dosed product? If one shoot for 250mg and get 260mg is that not accurate? That's a 4% over target.
I believe we are splitting hairs at this point.

To be honest I care a lot more about quality of the oil so all the ingredients, method of filtration, quality of the vials stoppers etc.

A fucking 5% difference under or over? Naaaaa even so I have brewed plenty of time on target I wouldn't care one bit for something 5+/- off.

What I inject is a lot more important then a 15mg difference on a 250mg product. Shit syringe variance of error is higher lol

I ain't feeling anyway that difference, but my body is gonna feel shitty quality solvents or carrier oil or contamination or whatever you can think off, that is important.
Click to expand...

Agreed. Was trying to give sources a fool proof method for nailing accuracy but as you state that comes with a cost (cleaning and upfront equipment). If everyone used your method (vs eyeballing volumes with shit accuracy) that would improve variance greatly and definitely be an "80/20 rule" win so to speak.

I hope sp5der is rewarded handsomely for his willingness to go above and beyond. A really nice change.
 
readalot said:
Agreed. Was trying to give sources a fool proof method for nailing accuracy but as you state that comes with a cost (cleaning and upfront equipment). If everyone used your method (vs eyeballing volumes with shit accuracy) that would improve variance greatly and definitely be an "80/20 rule" win so to speak.

I hope sp5der is rewarded handsomely for his willingness to go above and beyond. A really nice change.
Click to expand...
Americans got money they will reward him nicely :)
 
readalot said:
Sp5der appears to be aiming higher than regular. Interested to see what he comes up with.
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Ok lol. I just see something that is negligible.


"Higher than regular" that is unnecessary and wastes time/money.




Sampei said:
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.
Click to expand...
Well I mean using both
 
readalot said:
This is RSD example for instrument precision...

janoshik

Post in thread 'Janoshik Analytical laboratory testing services'

readalot said:
Without getting too in the weeds from stats standpoint, @janoshik quotes his HPLC method as 5% margin of error (one sided hence +/- 5?) .

Code: 
https://www.janoshik.com/details/
Click to expand...
I prefer to stay on the safe side with my claims.
readalot said:
This is why you have both labs report the results of 10 replicates haha. Everyone would be very enlightened by the distribution.

Exciting.

Postscript: would be useful for both labs to share their method RSV (relative standard deviation) based on internal work.
Click to expand...

1709412534003.png

We do multiplicates and I have RSD for this particular sample...
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Other part of puzzle is method precision. Haven't seen the raw data presented but under 2% would be excellent (same analyst prepping 10 samples and injecting).
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@Sampei
Unclear if this is simple estimate of instrument precision. I think it is with n = 2.

Demonstrating method precision would be more effort (10 distinct preps for a given oil sample then inject).
 
dinfaralt said:
man what does it take beyond member to be able to like posts! the hell is up with this place
Click to expand...
Yeah system glitches or something I joined back in 2021. Got member status after reaching criteria, then reverted to newbie. Then couldn't like, or reply for several months.
 
Rido said:
"Higher than regular" that is unnecessary and wastes time/money.
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This vendor went full out with multiple flasks. One big one for finishing batch all you need. So yeah let's call that $500.

Cleaning on that flask vs the rest of glassware is minimal.

Definitely minimizes error sources. Less work eyeballing that scale.

Anyway, respect your opinion on this as I do Sampei's. Take care.
 
sp5der said:
Cost don’t bother me bro send whatever

I think they’re coming in but that’s up to the people that sent when they get back results and decide to post them. Last I heard from customer that said he would test his package got stuck in customs
Click to expand...
Vials are with Jano. Any day now...
 
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