pH 5.0 Standard @ 25°C Back Catalog number: 59577 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MBB-194 2,2',3,3',4,4',5,5'-Octabromo[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request C17138000 Tartrazine, certified, 0.25g Price on request 79617 2,3,6-Trimethylnaphthalene Price on request