Potassium standard solution, K, CAS Number-7440-09-7, 7732-18-5, 500mL, CHEBI:26216, Colorless, 997 to 1003 ug/mL of K(1) in 2% HNO3 (20 deg.C), 39.1, AAS, GHS Signal Word: Warning
Boron standard solution, CAS Number-7440-42-8, 500mL, CHEBI:27560, Undesignated, 997 to 1003 ug/mL of B in water (20 deg.C), 231-151-2, 10.81, AAS, ZOXJGFHDIHLPTG-UHFFFAOYSA-N, boron, 14, 1343, MFCD00134034, Plastic bottle, Solution, 546231