4-tert-Octylphenol, 1000µg/ml in Isooctane, 1ml

1,413 µS/cm conductivity solution (box of 25x20mL sachet)

L-Isoleucine, 250mg

2,4,4',6-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,