Supplier Page from Aladdin Scientific Corporation for o,p′-DDE Standard
β-HCH Standard from Aladdin Scientific Corporation
(La, Ce, Pr, Nd, Sm, Y) multi-element mixed standard solution (mixed standard) from Aladdin Scientific Corporation
Four canions mixed standard (Calcium, Magnesium,Sodium,Ammonium) from Aladdin Scientific Corporation
TBN Standards from Aladdin Scientific Corporation