An units dictionary belongs to DES dictionary. The SI unit of dynamic viscosity is the pascal-second (Pa·s), or equivalently kilogram per meter per second (kg·m−1·s−1). The CGS unit is called the poise[26] (P), named after Jean Léonard Marie Poiseuille. It is commonly expressed, particularly in ASTM standards, as centipoise (cP) since the latter is equal to the SI multiple millipascal seconds (mPa·s). mpa.s is equal to cP. 1 cP=1 mpa.s , 1pa.s = 1000 mpa.s The SI unit of conductivity is S/m and, unless otherwise qualified, it refers to 25 °C. Often encountered in industry is the traditional unit of μS/cm. 1 micros.cm-1 = 100 micros.m-1