5 Component Quality Control Standard, QC #5, in 5% HNO3/ Tr HF, EPA 200.7

500ppm (µg/mL): SiO2, Sn

200ppm (µg/mL): Sb

100ppm (µg/mL): Mo, Ti

Matrix: 5% HNO3/ Trace HF

EPA Method 200.7 Rev. 3.3

Traceable to NIST.