Advantages and disadvantages of colorimetric measurement of nitrate nitrogen

Advantages and disadvantages of the colorimetric method for nitrate nitrogen:

1, the advantages are that it can be used in the protein analysis of all foods, the operation is relatively simple, and the experimental cost is low.

2, the disadvantage is that the experimental time is too long (at least 2h to complete), the accuracy is poor, the accuracy is lower than the bicarbonate urea method, the reagents used are corrosive.