Appearance (Colour)
Reddish brown
Appearance (Form)
Lyophilised powder
Activity
min. 15 units/mg powder
Unit Definition
One unit will convert 1.0 micromole of xanthine to uric acid per minute at pH 7.5 at 25°C.
Enzyme solution for activity determination
Prepared in 50 mM potassium phosphate buffer, pH 7.5.
