4-Methoxy-2',3,5,5'-tetrachlorobiphenyl, 100µg/ml in IO, 1ml Back Catalog number: MOPCB-4009S Availability: In the manufacturer's stock Price on request - + Recommended 91110 EPA Method 507Mix #8, 100µg/ml in Aetone, 1ml Price on request 53079 Instrument Standard 3 Price on request 54192 Chlorite (ClO2-) Price on request