| Product: | PEROXIDASE |
| Product code: | HRP4 |
| E.C. number: | 1.11.1.7 |
| CAS number: | 9003-99-0 |
| EINECS number: | 232-668-6 |
| Systematic name: | Donor:hydrogen-peroxide oxidoreductase |
| Source: | Horseradish |
| Form: | A freeze-dried material |
| Storage conditions: | Store desiccated at -15℃ or below. Allow to come to room temperature before opening. Before returning to storage, redesiccate under vacuum over silica gel for a minimum of four hours. Re-seal before returning to -15℃ or below. |
| Unit definition: | That amount of enzyme that will catalyse the production of 1mg of purpurogallin from pyrogallol in 20 seconds at 20℃ and pH 6.0. |
| Activity: | Not less than 250U/mg material |
| RZ (E403/E275): | Greater than 3.0 |
| Solubility: | Dissolves readily at 5mg/ml in 0.1M Potassium phosphate buffer, pH 6.0, to give a clear solution. |