Benzisothiazolin-3-one, 100µg/ml in AL, 5ml

[13C3]-Cyanuric Acid, 1.2ml x 100ug/ml, water

N-ethylperfluoro-1-octanesulfonamidoacetic acid, 50µg/ml in MeOH, 1ml

4-Ethylphenol, 100 µg/ml, Methanol, 1ml