What does the calculator measure?

It calculates concentration, equivalent volume, and scale markings from entered laboratory quantities. It does not determine appropriate exposure or medical dosing.

Are U-100 and U-40 scales interchangeable?

No. They have different markings per millilitre. Use only the scale actually printed on the instrument and independently verify its calibration.

Can IU be converted into milligrams?

Not without a substance-specific validated potency conversion. This calculator never assumes an IU-to-mass conversion.

Where are saved setups stored?

Saved setups remain in this browser's local storage. No data is transmitted to a server by the calculator.

Does the planner validate laboratory preparation?

No. The fill planner performs volume arithmetic only. It does not assess solubility, sterility, stability, container capacity, or technique.

V2 • Laboratory math explorer • On-device only

Research peptide dilution calculator

Explore concentration, calibrated scale geometry, component ratios, total-mass adjustments, and volumetric planning. Enter a laboratory reference quantity—not a recommended dose. This is not an injection or administration guide.

1 · Set up the calculation

Example material (nominal mass only)Examples are identification shortcuts, not suggested amounts or protocols.

Material / reference name

Quantity system

Vial quantity (mg)

Final liquid volume (mL)

Reference quantity per sample (mcg)

Reference unit

Vial price (CAD, optional)

Instrument scale

Barrel capacity

Smallest verified marked increment

Measured total mass (mg, optional)

Use independently verified measured total mass for calculations (mass mode only)A COA does not establish preparation safety or suitability. Confirm the measurement's meaning and units.

Scale safety: U-100/U-50/U-40 labels describe different marking densities. Verify the actual barrel, graduation, calibration and appropriate equipment. A drawn graphic cannot verify a physical instrument.

Optional mixture components

Enter component nominal masses in mg; their sum must equal vial nominal mass. Calculations use equal proportional adjustment if tested total mass is selected.

Component A name

Component A (mg)

Component B name

Component B (mg)

2 · Reverse volume planner

Choose a reference quantity and a desired scale marking to solve the mathematical final volume. This is not a preparation recommendation.

Desired scale marking

Volume-transfer instrument capacity (mL)

Final liquid volume is not automatically the same as liquid added. Powder displacement, losses, solubility, container headspace, and measuring tolerances are not accounted for. The planner cannot establish an appropriate preparation method.

Calculated result

Mathematical scale marking

—

Enter valid values above

—Concentration

—Amount per scale unit

—Volume per reference sample

—Mathematical samples / vial

—Cost per sample (CAD)

—Scale maximum on selected barrel

Transparent arithmetic

Saved research setups

Stored only in this browser. Links include settings in the URL; do not share confidential data through them.

Saved setup name

Previously saved

Compare marking precision

Comparison reflects geometry only. Finer markings do not establish measurement accuracy or make a tiny volume appropriate.

Common material examples — click to load mass only

Example label	Nominal mass	Action

The examples contain no dose, cycle, route, dilution volume, or administration instructions.

Questions & validation notes

Why can the calculated marking fall between barrel ticks?

Arithmetic gives a continuous number, while physical scales are discrete. The calculator displays its neighboring marked graduations and the implied deviation. It does not advise rounding a real-world dose or using an unverified instrument.

Does 1 IU equal a fixed number of mg or mcg?

No. International Units represent substance-specific biological activity. Converting IU to mass requires a validated conversion for that specific material. IU and mass are intentionally isolated in this tool.

Does the reverse planner tell me how much water to add?

No. It solves for final volumetric concentration under a mathematical model. Real preparation can require accounting for displacement and other laboratory constraints.

What is a U-100 unit here?

For a U-100 scale, 100 labeled scale units correspond to 1 mL. U-50 is 50 per mL, and U-40 is 40 per mL. The markings are not interchangeable.

Is this medical advice or a dosing tool?

No. The entered quantity is a user-defined arithmetic reference, not a recommended or verified human dose. This tool cannot assess safety, medical appropriateness, sterility, route, or suitability for use.

Where do settings and progress go?

Only into your device's browser storage if storage is available. Using private mode or clearing browser data can erase them. The tool makes no network requests and uses no third-party libraries.