Bio-Rad xMark Microplate Spectrophotometer

This is a used Bio-Rad xMark Microplate Spectrophotometer, a full-spectrum absorbance reader designed to go beyond fixed-filter instruments by scanning across a continuous wavelength range. The unit has been tested and functions as expected, delivering the precision wavelength selection that many research protocols require. Unlike simpler filter-based readers, the xMark uses a monochromator based optical system that lets users select any wavelength between 200 and 999 nanometers, which supports a wide variety of assay formats including nucleic acid quantification, protein assays, and custom absorbance based endpoints. It is compatible with Bio-Rad Microplate Manager software for data analysis, curve fitting, and reporting, and it accommodates standard 96-well microplate formats used throughout most laboratory workflows. Laboratories doing method development, academic research, or diagnostics work that spans multiple assay chemistries will find the xMark's wavelength flexibility valuable, since a single instrument can cover applications that would otherwise require several dedicated filter-based readers. This pre-owned unit offers that versatility at a meaningfully lower cost than a new system.