Before I start, something to read for you:
Normal osmolarity of blood/serum is about 300-310 mOsm/L. The tonicity of an IV fluid dictates whether the solution should be delivered via the peripheral or central venous route. Hypotonic and hypertonic solutions may be infused in small volumes and into large vessels, where dilution and distribution are rapid.
Solutions differing greatly from the normal range may cause tissue irritation, pain on injection, and electrolyte shifts. When solutions with extremes of tonicity are infused, fluids shift into or out of cells, including endothelial cells of the tunica intima near the catheter tip and blood cells. The resulting changes in the cell size of the vein wall causes the inflammatory and clotting processes to occur, leading to phlebitis and thrombophlebitis.
The generally accepted upper limit for a peripheral IV is 900 mOsm/L. When the osmolarity exceeds 900 mOsm/L, the ability of the peripheral veins to dilute parenteral infusions sufficiently is compromised, and chemical irritation of the vein intima occurs. Admixtures greater than 600 to 900 mOsm/L are associated with a dramatic increase in phlebitis and should be administered via a central line.
In a brief review of the literature, I couldn't find a 'magic' number regarding the lowest acceptable osmolarity or tonicity of an IV solution. Most people have been taught 0.45% sodium chloride, at 154 mOsm/L, is the lowest osmolarity that should be used via any IV route. Very hypotonic IV solutions such as 1/4 NS (NaCl 0.2%) cause red blood cells to swell and burst. If a sufficient number of RBC's are so affected, the patient may develop anemia. This condition is usually referred to as hemolytic anemia
So, 150-900mOsm/L is where it's at. Keep that in mind while you read on.
If your syringe only carries 40 units per ml this entire math is off. It's confusing isn't it? Units are not a measure of volume, but of the insuline contained inside that volume. If you use a vial with 100 units insuline per ml, you use a syringe that is labeled 0-100 units, but carries 1ml. If your insuline vial is concentrated at 40 units per ml, one should use syringes labelled 0-40 units. They both carry 1ml though (1ml=1cc).
Just to be certain, can 60 units fit into one of your syringes? There are insulin syringes that can carry 100 units per ml (pretty sure that's the standard in the US). Neither the 60 units your ex hubby drew up, nor the 30 you usually receive would fill the syringe all the way.
Is that correct?
In that case, just to give you an idea what you are doing to your body... A physiological osmolarity is 300mOsm/L.
If you inject a solution with, say 3000mOsm/L, the solution will draw liquid towards it. Both from inside and outside your cells. This will kill cells. That is what you are doing now. 3000 motherfucking milliOsmoles per Liter.
56mg/ml is the physiological concentration of meth. LOL I mean at that concentration, no water will have to move anywhere when the solution comes in contact with your cells. So that's a
healthy concentration I guess. :D
Now, the stuff your friends inject you with has
TEN TIMES that osmolarity. If you really had a clot and that shit would leak out, you will find a nice big hole where the liquid entered unless the body manages to clear it very fast. That's the only reason why you are not seeing holes in your arms. Most of the liquid you inject enters the vein and gets diluted rapidly. Every miniscule amount that does not end up in your veins will kill the surrounding cells. KEEL THEM DEAD!
So... You want a rush. What you want is the highest possible osmolarity that won't ruin your veins. I would not dare to go past 700, even if it says 900 in that text. Me, whenever I shoot up, I go for 300mOsm/L. If I miss, big fucking deal. I don't have to worry (depends on solvent and substance ofc).
Let's figure out how much water you need for 1.5 points of Methamphetamine HCl. No wait. Since I doubt your friends will buy different syringes because some internet whackjob said so, let's see where you land when you put the 1.5 points into a full syringe.
I will assume your syringe is said to carry
100 UNITS total at a volume of 1ml. They usually easily fit 1.1cc. So:
1.5 points in 1.1cc -> 730mOsm/L
I would not go higher than that. Just use as much liquid as the syringe will fit for your 150mg meth.
That's about 4 times as much liquid as you are used to. In my experience it will not have any significant effect on the rush. Make sure you're in that vein, inject relatively fast. You'll get the same rush. Your arms will thank you for it.
If you didn't understand this, read it again. And again. You've got time for 100 hour meth sessions, you'll have time for this. For your health.