blue dextran

blue dex·tran

high molecular weight dextran containing a blue chlorotriazine dye, Cibacron Blue; used to measure the void volumes in gel filtration columns, as well as checking column packing.
References in periodicals archive ?
0) and 50 g/L Blue dextran in deionized formamide (5:1 formamide to EDTA/Blue dextran).