Katal kat
About the Katal
The katal is the catalytic activity that converts one mole of substrate per second. It was the most recent special name added to the SI, in 1999, mainly for clinical chemistry and enzymology. Most real enzyme activities are measured in microkatals or nanokatals.
Related Units
Mole
molBase unit; Nᴀ = 6.02214076 × 10²³ mol⁻¹ exactly
One mole contains exactly 6.02214076 × 10²³ elementary entities, the fixed value of the Avogadro constant. Until 2019...
Hertz
Hz1 Hz = 1 s⁻¹
The hertz is one cycle or event per second and replaced the older expression cycles per second. It is named after...
Radian
rad1 rad = 1 m/m (dimensionless); 180°/π
A radian is the angle subtended at the centre of a circle by an arc equal in length to the radius, so a full turn is 2π...
Steradian
sr1 sr = 1 m²/m² (dimensionless)
The steradian is the solid angle that cuts out an area equal to the square of the radius on the surface of a sphere. A...