1000 ppmC standard KHP, 100ml

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

Li @ 100µg/mL in 2% HNO3 (Enriched in Li-6), 100ml

4-Chlorophenol solution, 200mg AOX/l, 100ml