Supplier Page from Aladdin Scientific Corporation for 4-Nitroaniline Standard
Fluoride standard from Aladdin Scientific Corporation
Standard Mixture of n-Paraffins (consists of C12, C13, C14, C15 and C16) [Standard Material for GC] from Aladdin Scientific Corporation
TOC Standards from Aladdin Scientific Corporation
Yellow Hue standard colorimetric solution（Y） from Aladdin Scientific Corporation