Catalase is a hemoprotein containing four subunits which decomposes peroxide.

Technical Notes: To remove thymol from Product Code: CTR, measure desired amount of mixed suspension, centrifuge to collect enzyme crystals, remove supernatant. Resuspend crystals in one-half initial volume of water, respin. Discard wash supernatant and dissolve crystals in buffer of choice.

Stability/Storage: All preparations are stable for 12 months at 2-8°C. Lyophilized preparations should be protected from moisture. In addition the Worthington Product Code: CTR should not be stored in plastic.

Unit Definition: One Unit decomposes one micromole of hydrogen peroxide per minute at 25°C, pH 7.0.