Reply To: System suitability in UV Methods

Pharmacopeia do not define specific system suitability tests for UV methods. However the following may be considered.

1. A test of repeatability by measurement of response of a standard solution, for example response of standard in five replicates (with %RSD to be less than 2.0%)
2. Resolution with a solution of toluene in hexane,  criteria – ratio between the minimum and maximum absorbance at respective wavelengths of 267 and 269 nm must exceed 1.3 (USP).

Useful references:

• UV Vis Spectrophotometer Calibration: An Overview of Performance Verification Tests According to USP and Ph. Eur. (Mettler Toledo)
• EDQM OMCL Document: QUALIFICATION OF UV-VISIBLE SPECTROPHOTOMETERS