The Waters 2487 Grating & Bushing with Tools (P/N: WAS081257) is a genuine Waters replacement kit designed for the Waters 2487 Dual Wavelength Absorbance Detector. This assembly includes the optical grating and precision bushing components required to maintain accurate wavelength calibration and optical alignment. Supplied with necessary tools for installation, it ensures optimal detector performance, reliability, and long-term stability in UV/VIS detection.