CommunityReconstitution & Math

60mg Reta ok with 2ml bac water?

54 replies12 peopleJul 5, 2026☆ Follow
Summary

What concentration works best when reconstituting 60 mg Reta and how much bac water should be used?

Users report successful reconstitution at 20-30 mg/ml using 2-3 ml bac water for a 60 mg vial. Most choose volumes that keep individual doses between 20-40 units for easy drawing with small syringes. Some calculate exact volumes while others pick round numbers based on number of doses. A few note that higher concentrations remain soluble up to roughly 80 mg/ml.

What this discussion establishesWhere people disagree

Whether to prioritize easiest math with more water or smallest possible injection volume with less water

Still open

Exact minimum bac water volume needed for reliable reconstitution of 60 mg vials

Nothing here is advice.

54 replies · 12 people · page 1 of 2
AmberCompass48archiveopening postJul 5

Recently switched my tirz from 20 mg per ml to 30 mg per ml to take less volume. I recall someone claiming reta needs more bac water than that or it might not mix right, which seems wrong to me. Just finished a bottle last week and want to make another at the higher strength. Need more than 2 ml to reconstitute, right?

LevelThistle44archiveJul 5

I reconstitute all my 60 mg reta at 30 mg per ml.

GreyAlder39archiveJul 5
↳ replying to @AmberCompass48 (opening post)

Reta and tirz have a max solubility around 80 mg per ml. My usual concentrations are 25 mg per ml. This keeps me around 0.30 to 0.40 ml per injection. Since I add 0.8 ml or 1.2 ml into the vial, I like 1 ml syringes for better accuracy than 3 ml ones.

PlainAlder11archiveJul 5

I do mine at 3 ml. We're on 9 mg, so I'd rather pin 45 units than an almost full 1 ml syringe. Easier to draw 45 units into these 31 g syringes.

AmberCompass48archiveJul 5

Sweet! Thread closed, that's all I needed.

NorthQuill51archiveJul 5

I usually select the strength according to how much I'm taking so the amount drawn up lands somewhere convenient, neither tiny nor oversized. Around twenty to thirty feels about right to me. How about everyone else?

SharpAnchor92archiveJul 5
↳ replying to @NorthQuill51

That's a solid observation which explains why people use those backward calculation tools. Besides, you can't count on the listed weight in the container either, meaning you shouldn't depend on convenient volumes such as two milliliters for mixing. Recently I came across an analysis report from around thirty days back that showed the actual weight exceeding the labeled one by a third. Positive in one way yet concerning in another.

NorthWillow72archiveJul 5
↳ replying to @GreyAlder39

A diagram appeared here around eighteen months back displaying suggested quantities for blending assorted peptides. The original query seemed to focus on effective options along with the least volume required to properly combine the powder. That explains why the reply caused the discussion to be locked. It rarely becomes problematic except with bigger quantities such as sixty milligrams since few individuals would blend tiny volumes. I lack that diagram myself but perhaps another member has it.

SteadySparrow75archiveJul 5
↳ replying to @SharpAnchor92

For the most part the weight checks I receive on these compounds come back five to ten percent above the listed amount. I tend to assume that surplus accounts for the purification overhead and then portion out my servings according to the labeled quantity. Still if the variation turns out really large I switch over to figuring everything from the actual measured weight instead.

GreyAlder39archiveJul 5
↳ replying to @NorthWillow72

I don't recall the origin of that detail, possibly from some write-up or official document. When looking up references, I turn to an AI because it works quicker than me. In my following purchase, I'm thinking of getting sixty milligrams. That quantity makes up six servings, meaning one point eight or two point four milliliters. Most likely I'll keep using the twenty-five milligrams per milliliter strength.

AmberCompass48archiveJul 5
↳ replying to @NorthQuill51

Yeah after kicking off my post here I injected twenty seven units using eight milligrams. Most folks seem to want the tiniest quantity they can manage.

AmberCompass48archiveJul 5
↳ replying to @AmberCompass48

By the way I'm already using quite a high amount of that medication so any surprise quantity or added milligrams likely won't change things for me very noticeably. This comes during the final part of shedding those remaining pounds while I push hard for my target. I expect to lower the dose a little once I arrive at that point. Up to then I'm going full throttle.

GreyAlder39archiveJul 5
↳ replying to @AmberCompass48

Curious where those twenty seven units came from in the first place. Divisions into twelves still feel new to me and sixteenths are not something I've sorted out. This case moves between three raised to the third power and two raised to the third power. Which sizes are you using?

LevelThistle44archiveJul 5
↳ replying to @GreyAlder39

8 mg over 30 mg per ml equals 0.267 ml.

AmberCompass48archiveJul 5
↳ replying to @LevelThistle44

Right on. I also wanted to thank you for double-checking the numbers. This kind of error with the amount isn't new for me. 🤣

WarmAnchor46archiveJul 5

Feeling a bit exhausted after looking over the discussion. I understand the wish to cut down on liquid around the midsection. Still wondering about trimming just a single milliliter of water though. Three milliliters really simplifies the figuring too. Recently switched over to two milliliters with forty milligrams of reta after using four before.

SteadySparrow75archiveJul 5
↳ replying to @AmberCompass48

My table keeps separate sections for each substance listing the liquid volume added to every container the powder weight inside and the final concentration once mixed. Further down are the matching injection volumes for each target quantity in micrograms or milligrams. Even though certain entries have stayed identical for ages I still verify the details immediately before every single shot.

CopperAlder51archiveJul 5

Most times I choose one milliliter because I prefer the smaller doses.

AmberCompass48archiveJul 5
↳ replying to @WarmAnchor46

Math turns out to be one of the enjoyable sides of the whole process. From here on I plan to use the 8 mg dose measured at 27 units since that amount stays simple to track and I expect to remain there for quite some time. You make a fair point that the difference may not really count. Still I prefer to keep each shot volume as small as possible because I am already giving myself several of them every day. Not long ago I leaned toward the 20 mg per ml strength the same way you described but once I switched over to the 8 mg level while finishing the last part of my weight reduction the 30 mg per ml option feels better.

WarmAnchor46archiveJul 5
↳ replying to @SteadySparrow75

Would it be feasible to have the chart made available? That would be wonderful.

LevelThistle44archiveJul 5
↳ replying to @WarmAnchor46

If I combine sixty milligrams with thirty milliliters the strength becomes twenty per milliliter so eight milligrams works out to point four. Running those numbers feels no simpler or tougher than going with two milliliters. Point four comes out neat yet it exceeds the capacity of my usual point three syringe. Adding two point two five milliliters to the sixty milligram container would let the eight milligram amount land exactly at point three. I mark the containers with their strength but could also note the usual amount right there.

GreyAlder39archiveJul 5
↳ replying to @AmberCompass48

I get it. Being quite lazy myself, I measured out four doses of 7.5 milligrams each when reaching those amounts from a 30 milligram source. On other occasions I have done three injections of 6.7 milligrams coming from a 20 milligram batch. To prevent errors I stick with identical quantities across every pen I have, mark each one clearly with the dosage using an attractive sticker, and wait to administer until I've had my second strong coffee blend in the morning.

LevelBeacon74archiveJul 5
↳ replying to @AmberCompass48 (opening post)

How many mg are you taking to use 60 mg in a timely manner for 1 person?

WarmAnchor46archiveJul 5
↳ replying to @LevelThistle44

My comment was simply noting a preference for smaller volumes as well. It's strange how attached everyone gets to mixing at equal parts right when starting these peptides. That matches what came up before. One injection each week doesn't register as much. But reaching fifteen makes you realize you're basically hauling around a bunch of the mixing liquid.

SteadySparrow75archiveJul 5
↳ replying to @WarmAnchor46

Here's what one block for KPV looks like.

PlainAlder11archiveJul 5
↳ replying to @CopperAlder51

Well, my dose at 9 mg would be 30 units. I could switch to 0.5 syringes. I could do that. Someone needs to start a 140 recon thread.

NorthWillow72archiveJul 5
↳ replying to @PlainAlder11

I use 1 ml when possible, because I am cheap. But I use 2 ml on 60 mg because I find it more difficult to properly measure 15 mg over 0.25 ml.

GreyAlder39archiveJul 5
↳ replying to @LevelThistle44

People make the math harder than it needs to be. After more than three months handling these peptides this is my first time working out a concentration at all and only because the discussion prompted it. I already understood the process from early experiments with homemade rockets plus later university work in related subjects. Concentrations only come up in narrow cases such as checking another substance or mixing a base solution meant for later splitting. Your numbers line up fine yet they rely on standard early schooling. I lean toward even simpler steps. If four portions are needed from one container the full liquid amount is simply four times the size of each individual shot. A single 0.6 ml attempt proved enough to avoid that approach again so now I stay with 10 to 40 units each time.

GreyAlder39archiveJul 5
↳ replying to @SteadySparrow75

I reckon it's unwise to blend different scales and sizes together in one table, above all by spelling out mcg for micrograms rather than using the proper symbol. Errors of that sort can produce odd outcomes like finding spinach on the lunch menu to turn us powerful like the sailor cartoon.

AmberCompass48archiveJul 5
↳ replying to @LevelBeacon74

Right now I'm sticking with eight. If that container ends up lasting past six weeks I'll get rid of it anyway, or maybe sooner. With so much of the other compound on hand, ditching an unfinished one doesn't matter much. I thought about grabbing a thirty milligram option or dividing the sixty across two, but the sixty works fine. Those earlier times of spending heavily on the other peptide feel like ancient history.

PlainAlder11archiveJul 5
↳ replying to @LevelThistle44

That 2.25 ml would max out the 0.3 ml syringe at 0.3 ml over 30 units, correct? Be patient, I'm learning two ways to measure.

LevelThistle44archiveJul 5
↳ replying to @GreyAlder39

My approach to figuring out amounts in either direction stands out as the most accurate, flexible, and fundamentally sound technique imaginable without any unnecessary extras. I use 9mg of that substance each time. I keep containers holding 10, 20, 30, 60, and 140mg. For the other one, I use .125mg and have containers of 5mg that I throw away even if some remains. This involves two from a total of 22 shots where I must do math based on 31 different mixes of shot and container size. Demonstrating the steps for the solution in a discussion space with folks who are figuring things out is definitely stricter than mental arithmetic. Right. With my concentration at 30mg per ml, the volume for that 9mg amount comes to .3ml, and it's the same 9mg amount others use, except I do mine every 3.5 days. My biggest under-skin shot reaches 2ml once a week. I thought it might feel odd but it's unremarkable except for the odd-looking plunger tool.

NorthQuill51archiveJul 5
↳ replying to @WarmAnchor46

I skipped any chart and went with an online reverse calculator instead. The math is basic stuff and plenty of those tools sit on the web. I just enter the vial weight, my dose, and the units for injection, then it shows the liquid volume needed for mixing.

GreyAlder39archiveJul 5
↳ replying to @LevelThistle44

Yeah, though this approach doesn't offer the quickest option for our current task.

WarmAnchor46archiveJul 5
↳ replying to @NorthQuill51

I possess useful programs that assist with mixing solutions. I've mastered the dilution process. Right now I'm using six separate compounds and their volumes differ greatly. A reference table would be helpful to me personally. Basic arithmetic isn't an issue for me. Yet at injection moment I become overly agitated. Everything turns chaotic. It's convenient to simply draw the liquid and inject. I dislike doing math while handling my injection sessions.

NorthQuill51archiveJul 5
↳ replying to @WarmAnchor46

Haha, use the calculator to make your own little chart then.

SharpAnchor92archiveJul 5
↳ replying to @WarmAnchor46

I wonder if the liquid volumes keep shifting around from skipping an inverse computation method. It looks doable to apply twenty five milliliters uniformly no matter the strength involved.

WarmAnchor46archiveJul 5
↳ replying to @NorthQuill51

Right now I'm just noting the amounts and units in my injection tracker for the following shot. It's really useful. I might also start a discussion on it. By the way, recently while doing injections together with my spouse I nearly grabbed a syringe I'd already used to administer to her. It shocked me how sloppy I got. So now our method is to remove the plunger right after each injection. Then the syringe ends up in the empty vial with the plunger withdrawn. That incident was frightening and awful simultaneously. I don't know whether others have encountered this when handling several injections for different folks. Still, we've switched to this routine.

WarmAnchor46archiveJul 5
↳ replying to @NorthQuill51

Over the past few months I've come to understand the problem. All my earlier mistakes with the various amounts came down to the container dimensions. These days I use the right containers and I strain every batch. Now my goal is that two to one mixture ratio.

NorthQuill51archiveJul 5
↳ replying to @WarmAnchor46

I'd keep the syringe inserted until the session wraps up then gather the needles later for the safety bin once the pickup stage arrives at the event. No big deal. 😉

WarmAnchor46archiveJul 5
↳ replying to @NorthQuill51

I wish that post turned out to be a joke. Your comments never fail to amuse me. Still, I enjoy bringing up the idea with my spouse just to watch her expression change.

NorthQuill51archiveJul 5
↳ replying to @WarmAnchor46

That idea really makes sense. Use the backward calculator to decide on the strength for every mixed peptide so they all have equal units. If multiple people are taking different amounts from one bottle, everyone ends up with their individual unit total that applies equally to all peptides involved. This makes handling easier when it's time for the shot. Just have to build the reference sheet during the mixing stage.

PlainAlder11archiveJul 5

That backwards calculator just isn't something I like.

NorthWillow72archiveJul 5
↳ replying to @PlainAlder11

I calculate the number of servings per bottle first then decide the bacteriostatic water quantity to mix in. For four servings dividing the water accordingly means point two five milliliters each from one milliliter total or point five from two milliliters. People do what suits them. On top of that if a bottle breaks I take the remaining liquid and pin twice but luckily this seldom occurs during my routine.

NorthQuill51archiveJul 5
↳ replying to @PlainAlder11

Can you describe your specific motivations here? Or does this arise purely from some unidentified irrational anger?

PlainAlder11archiveJul 5
↳ replying to @NorthQuill51

There's no special explanation for why I favor a regular recon calculator. It's pretty much the same as having an aversion to one kind of carbonated drink.

GreyHarbour88archiveJul 6

My weekly intake sits at ten milligrams, though I've ended up with surplus twenty-four milligram units that still need finishing. I normally blend three during the filtering step, leaving me at a concentration of twenty-four milligrams per milliliter for now. After those are used up I'll repeat the process with the thirty milligram versions.

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