Hydrogen In Titanium Alloy (Nominal Mass Fraction 125 mg/kg H)
Subbituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)
Urban Particulate Matter
Trace Elements in Coal Fly Ash
钇（Y）标准溶液
Burnt Refractory (Al203-60%)
Silica Fume (powder form)
Burnt Refractory (Al203-70%)
Obsidian Rock
Flint Clay
Bauxite (Arkansas)
Burnt Refractory (Al203-40%)
Potassium Feldspar
Basalt Rock
Titanium (Ti) Standard Solution
Molybdenum (Mo) Standard Solution
Niobium (Nb) Standard Solution
Zirconium (Zr) Standard Solution
SRM 3669 - Arsenic Species in Frozen Human Urine (Elevated Levels)
SRM 972a - Vitamin D Metabolites in Frozen Human Serum
