Sigma Aldrich Co. Ltd. engages in the science and technology company. Its products include analytical standards, gas chromatography, spectroscopy, acids and bases, catalysis and inorganics, organometallics, solvents, antibodies, biochemical and reagents, cell biology, microbiology, and polymer sciences. It also offers basic research, product and process development, manufacturing and production, and regulatory compliance services. The company was founded on December 10, 1987 and is headquartered in Gillingham, the United Kingdom.