pH 4.0 Standard @ 25°C Back Catalog number: 59436 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-123678-S 1,2,3,6,7,8-Hexachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 11772.12-100-IO 2,2',3,3',5,5',6,6'-Octachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 675734 D3-Triclosan (2,4-dichlorophenoxy D3), 100 µg/ml, Price on request