This product is an alternative to the products (SKU) of these brands: Agilent:- Waters:- Chromacol: 18-ST3 / 500 (alt.) 18-ST3S (alt.) / 100 - National Scientific: B7995-18 / 100 (alt.) - Wheaton:- Finneran:- SUN/SRI International: 203 573 / 100 (alt.)