Iodide (I), 1000µg/mL in Water, 100ml

Cyanide (CN-)@1000mg/L in 0.1% NaOH, 100ml

Zn, 1000 µg/mL in 5% HNO3, 100ml

Method 200.8/1638/1640 Internal Standard, 10µg/ml in 2%-HNO3, 4x25ml