Supplier Page from Aladdin Scientific Corporation for Standard Mixture of n-Paraffins (consists of C17, C18, C19 and C20) [Standard Material for GC]
EPTC Standard from Aladdin Scientific Corporation
Five canions mixed standard ( Sodium,Ammonium,Potassium, Magnesium,Calcium ) from Aladdin Scientific Corporation
Four anions mixed standard(Fluorine, Chlorine, Nitrate Nitrogen and Sulfate) from Aladdin Scientific Corporation
Reference Materials of Flash Point-Closed Cup from Aladdin Scientific Corporation