Supplier Page from Aladdin Scientific Corporation for Standard Mixture of n-Paraffins (consists of C21, C22, C23, C24 and C25) [Standard Material for GC]
(As, Cd, Cr, Pb, Hg) Multi-element mixed standard solution (mixed standard) from Aladdin Scientific Corporation
Br- in water from Aladdin Scientific Corporation
TBN Standards from Aladdin Scientific Corporation
Tribromomethane Standard from Aladdin Scientific Corporation