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Phosphine standard solutionCAS NO.: 7778-77-0
Potassium Hydrogen Phthalate（pH Standard）CAS NO.: 877-24-7
Borax pH SolutionCAS NO.: 1303-96-4
Silver in waterCAS NO.: 7440-22-4
Fipronil Desulfinyl in AcetoneCAS NO.: 205650-65-3
Glycerin in waterCAS NO.: 56-81-5
Quinine Sulfate in Perchloric Acid SolutionCAS NO.: 804-63-7
Chloride in waterCAS NO.: 7447-40-7
N-hexadecane in isooctane for GCCAS NO.: 544-76-3
Benz[a]pyrene in MethanolCAS NO.: 50-32-8
