Click to expand Tap to zoom Guanidine-HCl, Molecular Biology Grade by Promega Save Liquid error (product-badge line 32): Computation results in 'NaN' (Not a Number)% € 0.00 100g - € 0.00 500g - € 0.00 Size 100g 500g 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Guanidine-HCl, Molecular Grade, is commonly used for the isolation of intact mRNA from tissues or cultured cells.