Bench Science and Laboratory Math

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Molarity and Dilution (C1V1=C2V2) - Solve for the missing fourth from any three of stock concentration, stock volume, final concentration, final volume.
Serial Dilution Planner - Per-tube transfer volume, per-tube diluent volume, and resulting concentration at each step.
Molecular Weight from Formula - Client-side parser handling parentheses and subscripts.
Mass-to-Moles and Moles-to-Mass - Solve for the missing third from mass, moles, and molecular weight.
Ideal Gas Law (PV = nRT) - The gas-law member the lab chemistry set (mass-moles, molecular-weight, molarity) was missing.
Van der Waals Real-Gas Pressure & Z Factor - Real-gas pressure from the van der Waals equation of state (P + a n^2/V^2)(V - n b) = nRT.
Arrhenius Activation Energy (Rate vs Temperature) - The rate-vs-temperature member the lab kinetics set (doubling-time, Michaelis-Menten) was missing.
Osmolarity and Osmotic Pressure (van't Hoff) - Osmolarity and osmotic pressure of a solution, by the van't Hoff relation.
Clausius-Clapeyron (Enthalpy of Vaporization) - The phase-equilibrium member the lab phys-chem set (ideal gas, Arrhenius, Nernst) was missing.
Nernst Equation (Cell Potential vs Concentration) - The electrochemistry member the lab chemistry set (ideal gas, Arrhenius) was missing.
Centrifuge RPM and RCF - Centrifuge speed converted to g-force, or g-force back to rpm.
Resuspension Volume - Diluent volume to add given lyophilized mass and target concentration.
PCR Master Mix - Per-component master-mix volume for N reactions with a pipetting fudge factor.
Beer-Lambert Concentration - Concentration from absorbance, path length, and molar extinction coefficient.
Henderson-Hasselbalch Buffer - Conjugate-base / acid ratio and moles for a target pH.
Hemocytometer Cell Count - Cells per mL from squares counted; optional trypan blue viability percent.
OD600 to Cell Density - Cell density from an OD600 reading, in cells per mL.
Agarose Gel Percent - Recommended agarose percent for a fragment-size range and grams of agarose for the buffer volume (percent/100 x mL).
Primer Melting Temperature - PCR primer melting temperature (Tm), length.
CFU/mL Viable Plate Count - Colony-forming units per mL of the original sample from colonies counted, dilution factor, and volume plated.
Molarity from Concentrated Reagent - Stock molarity of a concentrated liquid reagent from its assay percent, density.
Nucleic Acid Concentration (A260) - DNA/RNA concentration from a 260 nm read, plus the 260/280 purity ratio.
Ligation Insert:Vector Molar Ratio - Insert mass to add for a target insert:vector molar ratio (insert ng = ratio x insert bp/vector bp x vector ng).
Cell Culture Doubling Time - Doubling time, growth rate, and number of doublings from two counts and the elapsed time.
Projected Cell Count from Doubling Time - The projected count (or OD) from a known doubling time over an elapsed time.
Michaelis-Menten Enzyme Kinetics - Reaction velocity and percent of Vmax from Vmax, Km, and substrate concentration (v = Vmax[S]/(Km+[S])).
Substrate for a Target Fraction of Vmax (Michaelis-Menten Inverse) - The assay-design inverse of Michaelis-Menten.

Bench Science and Laboratory Math

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