Which is more sensitive dector in hplc VWD or PDA?

In HPLC, a Photodiode Array (PDA) detector is generally more sensitive than a Variable Wavelength Detector (VWD). This is because the PDA can simultaneously measure absorbance across multiple wavelengths, allowing for better detection of compounds with varying absorbance characteristics. Additionally, the ability to collect spectral data enhances the identification and quantification of analytes, contributing to improved sensitivity.