#molarity

Laboratory dilution and molarity maths as an API, computed locally and deterministically. The dilution endpoint solves the standard C1·V1 = C2·V2 relation: give any three of the stock concentration, stock volume, final concentration and final volume and it returns the fourth, plus the volume of stock needed, the diluent to add (V2 − V1) and the dilution factor — and it warns you if the numbers would concentrate rather than dilute. The molarity endpoint ties together moles, molarity, volume, mass and molar mass via moles = molarity × volume(L) and mass = moles × molar mass: pass any sufficient subset (for example a target molarity, volume and molar mass) and it returns how much solute you need, with volumes in litres and millilitres and mass in grams and milligrams. The serial endpoint builds a serial-dilution series from a stock concentration, a dilution factor and a number of steps, giving the concentration at each tube and — if you pass a per-tube total volume — the transfer and diluent volumes for each step. Volumes accept litres, millilitres, centilitres, decilitres and microlitres; mass accepts grams, kilograms, milligrams and micrograms. Everything is computed locally and deterministically, so it is instant and private. Ideal for chemistry and biology lab tools, LIMS and bench apps, education and homework helpers, and pharmacy and pipetting calculators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is a dilution and molarity calculator; for chemical-compound data and properties use a chemistry API and for the ideal gas law use a gas-law API.

api.oanor.com/dilution-api