Tin ingot (purity 99.5 min)

Molybdenum disulp (mos2) powder purity: 99.5 (min) , average particle size: 20-30 microns (max),molybdenum disulp (mos2) powder purity: 99.5 (min) , average particle size: 2 microns (max),supply of nano graphite powder purity: 99.5 (min) , average particle size: 01 microns (max)

Crystal violet,n n dimethyl p phenylenediamine dihydrochloride 99 percent purity titration powder,alcian blue 8gx,alizarin red s certified by the biological stain commission powder,solvent blue 38 practical grade,aniline blue sodium salt pure,may grunwalds eosin methylene blue,hematoxylin monohydrate,double end embedding mold,rhodamine b 98 percent pure,epoxy embedding medium hardener araldite cy212 resin