GLC reference standard GLC-673-B, 100mg Back Catalog number: GLC-673-B Availability: In the manufacturer's stock Price on request - + Recommended C12965000 Direct Black 38, certified, 0.1g Price on request 684142 1-Nitrosopyrrolidine, 100mg Price on request 682406 2-Chloroethyl vinyl ether, 1000mg Price on request