MULTI-ELEMENT STANDARD 23, Ricca Chemical
Manufacturer: Ricca Chemical Co.
VeriSpec Multi-Element Standard 23 15K ppm Mg, 8K ppm Na, 3.5K ppm Ca, 3000 ppm K; 100 ppb B, Fe, Mo, Sr; 50 ppb As, Ba, Ni, V, Zn; 30, Shelf Life (Months): 12