A unit-conversion tool for laboratory measurement. Set the vial, the water and a target amount, then drag the plunger and watch the numbers move.
Peptide on the vial label (mg)
More water spreads the same peptide across more syringe graduations, which makes small draws easier to read.
Tip: you can also drag the plunger on the syringe to set this by eye. The quick-fill values are the same for every vial. They are examples for the arithmetic, not a recommendation for any compound.
Every U-100 syringe reads 100 units per mL; capacity only changes the largest single draw.
Draw
5 units
Choose a vial from the catalogue, or enter the peptide amount printed on your own vial's label in mg. This is the total peptide in the vial.
Set the volume of bacteriostatic water in mL. The same peptide in more water gives a lower concentration, spread over more syringe graduations.
Type an amount in mcg or mg, tap a quick-fill chip, or drag the plunger. It is a number you choose; the calculator never suggests one.
The plunger shows where that volume sits on a U-100 scale. 100 units is 1 mL on every size, so the syringe capacity only changes how much fits.
Concentration is the vial contents divided by the volume of bacteriostatic water added: a 10 mg vial reconstituted with 2 mL is 5 mg/mL.
A U-100 syringe is graduated so that 100 units correspond to 1 mL, regardless of whether the barrel holds 0.3, 0.5 or 1 mL. So mcg per unit is simply the mcg/mL figure divided by 100. The syringe capacity changes how much it can hold at once, not what a unit means.
A larger diluent volume does not change how much peptide is in the vial. It changes how many graduations that peptide is spread across, which is why the volume is worth settling before it is added.
Draws per vial is the vial contents divided by the target amount. For a blend, each draw carries the components in the same ratio as the vial: in a 10 mg vial made of two 5 mg components, a 1 mg draw carries 0.5 mg of each.
This tool performs unit conversion only, as a measurement reference. It does not recommend a quantity, is not a protocol and gives no guidance for human or animal use. All materials are supplied solely for non-clinical in-vitro laboratory research. Not for use in or on humans or animals.