1X Buffer Components. RNA Loading Dye, (2X) B0363S 4 x 1 ml Lot: 0021209 Store at â20°C Exp: 9/14 Description: The RNA Loading Dye, (2X) is a premixed loading dye for use with denaturing and non-denaturing PAGE/agarose gels. Formaldehyde Load Dye 6x Purple Loading Dye Recipe. Loading Dye 0.3% xylene cyanol. New England Biolabs Uk Ltd Gel Loading Dye Purple 6x. 6x Agarose Gel Loading Dye Recipe Prepare the separation gel (10%). Formamide 75-12-7 - Sigma-Aldrich Structure Search. RNA Loading Dye, (2X