Potassium AA Standard 1 mL 1 mg K (1000 ppm K)KCl in Water Ricca Chemical; 100mL; Poly natural; bp: Approx. 100; CAS: 7447-40-7 (Potassium Chloride), 7732-18-5 (Water, Deionized); 1/EA Exact Match AK1KW100
Phosphorus AA Standard 1 mL 1 mg P (1000 ppm P)NH4H2PO4 in H2O Ricca Chemical; 100mL; Poly natural; CAS: 7722-76-1 (Ammonium Dihydrogen Phosphate), 7732-18-5 (Water, Deionized); 1/EA Exact Match AP1KW100