S7 Sciences / Research tools

Laboratory concentration,
made exact.

Enter vial amount, diluent volume, and either a target amount or target quantities per vial to calculate concentration, draw volume, and U-100 syringe units.

Watch the guide

Instructional video

See the process, then use the calculator.

This S7 Sciences walkthrough demonstrates reconstitution and explains how to enter the labeled vial amount, diluent volume, and supplied reference amount in the calculator below.

Educational reference only. Follow the applicable product label, pharmacy, or laboratory instructions. This video does not select a compound, establish an amount, or provide medical advice.

Concentration & unit conversion

Calculate the measurement.

Supply the reference amount from an authorized laboratory protocol, or use a target-quantity count as the arithmetic input. This tool calculates arithmetic—it does not determine what the target should be.

01Material in vial

Quick pick

02Diluent volume

Quick pick

03Target amount

Quick pick

04Target quantities per vial

per vial

Quick pick

U-100 syringe capacity

Capacity changes the barrel length and maximum volume, not the U-100 conversion.

1 mL100 units0.5 mL50 units0.3 mL30 units

Calculated measurement

Draw to15units on a U-100 scale

Draw volume: 0.15 mL
Concentration: 1.667 mg/mL
Target quantities per vial: 20
Material per U-100 unit: 16.667 mcg

The result assumes the solution is uniform and the entered values are correct. Confirm all values against the applicable label or authorized protocol before relying on the calculation.

Load a hypothetical calculation example

Reconstitution basics

A disciplined preparation sequence.

The appropriate diluent, volume, mixing method, storage temperature, and beyond-use date depend on the specific product. Confirm those instructions before beginning.

01
Verify the instructions
Confirm the exact material, vial amount, approved diluent, volume, storage conditions, and discard date.
02
Prepare a clean field
Wash hands, gather new sterile supplies, and disinfect vial stoppers according to the applicable procedure.
03
Measure the diluent
Draw the verified volume carefully with an appropriate sterile syringe and avoid contaminating either vial.
04
Introduce it gently
Direct the liquid along the inside wall when the product instructions permit; avoid forceful agitation.
05
Label and store correctly
Record the preparation date and follow product-specific refrigeration, light protection, inspection, and disposal directions.

How the math works

Linked inputs. Five clear calculations.

A U-100 scale contains 100 units per milliliter. Once the amount in the vial and the diluent volume are known, target amount and quantities per vial become reciprocal inputs: changing either one recalculates the other.

Concentration

vial amount ÷ diluent mL = amount/mL

Target amount

vial amount ÷ target quantities = target amount

Quantities per vial

vial amount ÷ target amount = quantities

Draw volume

target amount ÷ concentration = mL

U-100 units

draw mL × 100 = units

Hypothetical calculation examples

Illustrative calculation ratios.

These rows illustrate the arithmetic only. They are not product instructions, recommended dilutions, or dosing protocols. Select a named example above the calculator to load its numbers. For blends, the amount means the total labeled blend amount; the calculator does not separate ingredient-level concentrations. hCG is calculated in IU.

Compound	Vial	Diluent	Concentration	Hypothetical result → U-100
GLP-3 RT	10 mg	3 mL	3.333 mg/mL	1.667 mg reference → 50 units
GLP-2 TZ	10 mg	3 mL	3.333 mg/mL	1.667 mg reference → 50 units
GLP-1 SM	10 mg	3 mL	3.333 mg/mL	1.667 mg reference → 50 units
AOD-9604	5 mg	3 mL	1.667 mg/mL	0.25 mg reference → 15 units
ARA-290	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
Wolverine Blend	20 mg total	3 mL	6.667 mg total/mL	1 mg total reference → 15 units
GLOW Blend	70 mg total	3 mL	23.333 mg total/mL	3.5 mg total reference → 15 units
KLOW Blend	80 mg total	3 mL	26.667 mg total/mL	4 mg total reference → 15 units
Tesamorelin + Ipamorelin Blend	15 mg total	3 mL	5 mg total/mL	0.75 mg total reference → 15 units
CJC-1295 (No DAC) + Ipamorelin Blend	10 mg total	3 mL	3.333 mg total/mL	0.5 mg total reference → 15 units
Tesamorelin	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
Sermorelin	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
Ipamorelin	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
BPC-157	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
TB-500	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
CJC-1295 (No DAC)	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
CJC-1295 (with DAC)	5 mg	3 mL	1.667 mg/mL	0.25 mg reference → 15 units
Semax	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
Selank	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
PT-141	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
hCG	5,000 IU	3 mL	1,666.667 IU/mL	250 IU reference → 15 units
Kisspeptin-10	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
MOTS-c	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
Epithalon	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
SS-31	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
NAD+	500 mg	3 mL	166.667 mg/mL	25 mg reference → 15 units
Glutathione	1,500 mg	3 mL	500 mg/mL	75 mg reference → 15 units
DSIP	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
AHK-Cu	100 mg	3 mL	33.333 mg/mL	5 mg reference → 15 units
Thymosin Alpha-1	10 mg	3 mL	3.333 mg/mL	0.5 mg reference → 15 units
GHK-Cu	100 mg	3 mL	33.333 mg/mL	5 mg reference → 15 units

Research / Safety briefing

Responsible research · 4 minute read

Research-grade is not pharmaceutical-grade.

A peptide may arrive in a sealed vial with a purity report and still be unsuitable for use in a person. Medical guidance and pharmaceutical sourcing address different parts of the risk—and both matter.

Peptides are not automatically safe because they are made from amino acids. Many are biologically active signaling molecules capable of affecting hormones, metabolism, immune activity, and other systems. When a product is manufactured and sold as a research material, it has not followed the same patient-use pathway as an approved prescription medicine.

A certificate of analysis can provide useful information about the sample and tests described on that document. It does not, by itself, establish clinical safety, effectiveness, sterile manufacturing, an appropriate formulation, or suitability for a particular person.

Where the risk comes from

Identity and strength

An unapproved product may contain the wrong form, an unexpected concentration, peptide-related impurities, or other ingredients not disclosed on the label.

Sterility and contamination

A clean-looking vial is not proof of sterility. Microbial contamination, endotoxins, or particulates can cause serious infection, inflammation, or other harmful reactions.

Unknown human effects

Some research peptides have limited or no reliable human safety data. Short- and long-term effects, interactions, and contraindications may be poorly understood.

Labeling and handling

Missing or unreliable formulation, storage, stability, and concentration information can turn a small measurement error into a materially different exposure.

Medical guidance is essential—and the source still matters.

A licensed clinician can evaluate medical history, current medications, laboratory findings, contraindications, and the need for follow-up. If peptide therapy is medically appropriate, that clinician can select an FDA-approved medicine or, when a patient-specific need warrants it, a lawfully compounded prescription from a properly licensed pharmacy.

If someone has already used an unapproved product or develops symptoms after exposure, contact a licensed health care professional promptly and provide the product label, lot number, and any available documentation.

Frequently asked questions

Clear answers, carefully bounded.

Measurement guidance should clarify the arithmetic without pretending that every compound, diluent, or storage condition is interchangeable.

What does reconstitution mean?

Reconstitution is the process of adding an appropriate liquid to a freeze-dried (lyophilized) material so it becomes a measurable solution. The correct diluent and volume are product-specific; always follow the applicable label, pharmacy, or laboratory instructions.

What is bacteriostatic water?

Bacteriostatic Water for Injection, USP is sterile, nonpyrogenic water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is supplied in a multiple-dose container for diluting or dissolving compatible drugs. Compatibility must be confirmed from the product instructions or by a pharmacist.

Can sterile water or saline be substituted?

Do not assume diluents are interchangeable. Preservative-free sterile water, bacteriostatic water, and saline have different properties, and a product may require one specific vehicle. Use only the diluent identified by the manufacturer, dispensing pharmacy, or qualified laboratory protocol.

How much bacteriostatic water should be added?

There is no universal volume. The amount must remain within the product instructions and vial capacity. Mathematically, more diluent creates a lower concentration and moves the same target amount across more syringe units; less diluent produces a higher concentration and fewer units.

Why do the units change when the amount of water changes?

The vial’s total peptide mass stays the same, but its concentration changes. Adding more liquid spreads that mass through a larger volume, so the same target amount occupies more milliliters and therefore more U-100 units.

How does the calculator determine the units to draw?

It converts the target amount to milligrams, divides that amount by the solution concentration to find milliliters, then multiplies milliliters by 100. On a U-100 scale, 100 units equal 1 mL.

How do I convert between micrograms and milligrams?

One milligram equals 1,000 micrograms. For example, 250 mcg is 0.25 mg, and a 5 mg vial contains 5,000 mcg.

Does syringe barrel size change the U-100 calculation?

No. A 1 mL, 0.5 mL, or 0.3 mL U-100 syringe uses the same relationship of 100 units per milliliter. The barrel size changes total capacity and tick spacing, not the calculated number of units. The selected syringe must still be large enough for the calculated volume.

What if the result falls between readable tick marks?

Do not guess at a mark you cannot measure reliably. Confirm the prescribed or protocol amount and measurement method with the responsible clinician, pharmacist, or laboratory supervisor. A different permitted dilution may produce an easier-to-read result, but the calculator cannot approve that change.

How long can a reconstituted vial be stored?

Stability is specific to the material, diluent, preparation conditions, and product labeling. A general calculator cannot establish a beyond-use date. Follow the manufacturer or dispensing pharmacy’s temperature, light-protection, refrigeration, and discard instructions.

Does this calculator establish a target amount or protocol?

No. It performs concentration and unit conversion only. It does not select a compound, establish a target amount, confirm suitability, or replace an authorized laboratory protocol. Linked vendor materials are presented for laboratory research reference only and are not for human or veterinary use.

Reference notes

Primary safety references.

General descriptions of bacteriostatic water and multiple-dose vial handling were checked against public U.S. government references. Product-specific labeling always controls.

DailyMed: Bacteriostatic Water for Injection CDC: Preventing Unsafe Injection Practices FDA: Compounding and the FDA FDA: Bulk Substances That May Present Safety Risks