A	Interface area (mm2)
c	Concentration (mmol/L)
D S/B	Diffusion coefficient (m2/s)
F v	Volume force vector (N/m3)
K m	Michaelis–Menten constant (mmol/L)
L	Microchannel length (m)
M B	Molecular weight of solvent (g/mol)
p	Pressure (Pa)
T	Temperature (°C, K)
v	Linear velocity (m/s)
u	Velocity vector (m/s)
V	Reactor volume (μL)
V.A.	Volumetric activity (U/mL)
V max	Maximal reaction rate (U/mL)
V B	Molar volume of the solute (mL/mol)
V S	Molar volume of the solvent (mL/mol)
x	Microchannel length (mm)
y	Microchannel width (mm)
Y	FAME yield (%)
W	Half-width of microchannel (mm)