Calibration Standard Mix 1

9,10-Dihydro-9-Oxa-10-Phospaphenantrene-10-Oxide, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 35948-25-5

Dihydrostreptomycin sesquisulfate, 100mg

2,6-Dimethylnaphthalene, 50 µg/mL in Toluene, 1ml