Our X-Gal dry powder is manufactured for researchers who require consistent, high-sensitivity detection of β-galactosidase activity in blue-white screening, reporter gene assays, and histochemical staining workflows. X-Gal (5-bromo-4-chloro-3-indolyl-β-D-galactopyranoside) is a chromogenic substrate that produces a distinct blue color upon cleavage by β-galactosidase, making it an essential tool for colony screening, lacZ reporter detection, and cell-based assays where reliable signal clarity determines experimental outcomes.