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How to find dosage weight without scale.

S

Stinkypee

Greenlighter
Joined
Dec 7, 2010
Messages
13
Location
USA
I have no scale but am trying to divide a research chemical in powder form into appropriate doses for my plants

Can I use dimensional analysis and proportions on the molecular weight and volume of known substances to find the weight/volume my research chemical?

Example.

One teaspoon of sugar = 4.2 grams
Molecular of sugar = 342.30 g/mol

One teaspoon of mephedrone = X (unknown for now)
Molecular weight of mephedrone = 177.24

After setting up a proportion, we are left with this forumla:

4.2 multiplied by 177.24 = 342.30x

using algebra, I'm getting 2.175grams of mephedrone would be in one teaspoon.

My smallest teaspoon is 1/8th teaspoon

2.175 multiplied by (1/8 )= 272mg

So my smallest teaspoon would be about 272mg of mephedrone.

IS this correct?

I don't get a chance to apply math very often and wouldn't be surprised if I'm wrong.
 
Personally I'd say the guesswork isnt worth the risk, because it is definitely a risk, but maybe someone else will be able to give you a better answer. I'll go ahead and move this, but I cant guarantee that the forum mods will keep it open.
 
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Bad idea. Very unlikely mephedrone is the same density as sugar. Honestly you would be better off just dividing a gram into 4 equal piles or whatever. Not that I recommend that, either. Just get some scales, you don't need mg scales for meph, cheap ones will do.
 
sekio said:
You can't measure powder substances by volume and get a weight measurement, sorry, that just doesn't work...
Click to expand...

Ya i knew the accuracy would be flawed + compromised but I was hoping it would give me a ballpark guess.

I've thought about taking the known quantity sent to me and dividing me out but it might be more time consuming to number crunch that when my known quantity is mid size to large. (20g of plant food)
 
toa$t said:
dissolve it in water and use a syringe (so long as you know exactly how much you are starting out with).
Click to expand...

Yep, making it into a solution is the way to go. Think about the maximum dose you're going to want to take at one time before deciding what volume of water to use. For example, you add enough water to the powder to make it up to 100ml, you should'll get a 200mg/1ml solution if you are starting out with 20g of powder.

You'd want a well-calibrated way of measuring your doses at that concentration, such as a syringe designed for measuring paediatric meds rather than a kitchen teaspoon.
 
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If you can afford 20 grams of meph (it's not plant food, cut that shit out) you can sure as shit afford a $20-$30 scale.

It's also good to be sure you got 20 grams and you didn't get shorted or (god forbid) too much.
 
Lolie said:
Yep, making it into a solution is the way to go. Think about the maximum dose you're going to want to take at one time before deciding what volume of water to use. For example, you add enough water to the powder to make it up to 100ml, you should'll get a 200mg/1ml solution if you are starting out with 20g of powder.

You'd want a well-calibrated way of measuring your doses at that concentration, such as a syringe designed for measuring paediatric meds rather than a kitchen teaspoon.
Click to expand...

I've thought about this and have easy access to syringes. Will putting the meph into a water solution compromise the quality of the substance over time?

That much meph can clean my pond and feed my plants for a good while but I just don't want it to go bad because i don't use it quickly enough.
 
Stinkypee said:
I've thought about this and have easy access to syringes. Will putting the meph into a water solution compromise the quality of the substance over time?

That much meph can clean my pond and feed my plants for a good while but I just don't want it to go bad because i don't use it quickly enough.
Click to expand...
Beta ketones tend to be somewhat unstable, I think making a solution is a bad idea. Just buy some scales.
 
None at the moment.

I'm looking to get 10g from a supplier here soon though and plan on it lasting 3-4 months.
 
well if you havent got it yet id say buy scales first lol.

if you have (and this doesnt always work but will give you a ballpark figure) then crush / chop it all up into the same fineness, spread it out on a flat surface evenly as you can and then divide into piles of 10, then each of those piles into 4. leaving you with 40 200-300mg doses.

make sure you do have 10gs not 100gs first tho using a kitchen scale lol
 
cheap scales usually are good to no less than a 10th gram or 100mg. even 80 buck scales are only down to 10mg at best and usually sketchy at that range. you need .0001g to even get near a good reading are those start about 1,000 dollars. but they are worth it. give up buying drugs at all until you have one, or ask santa claus. you'll be glad you did.
 
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