pH 4.01 buffer solution (box of 25x20mL sachet)

3 Deuterated Compounds Internal Standard Mix 3 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% Benzene-d6 39.7 Naphthalene-d8 20.9 Ethylbenzene-d 10 39.3

1,2,3,7,8-Pentabromodibenzofuran,50 µg/mL,n-nonane,1mL,

Di-n-heptyl phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 3648-21-3