Hach Phosphate Standard Solution, 1 mg/L as PO4 (NIST), 500 mL, 256949By Hach $39.85 | EA Quantity discounts available QuantityPrice Product #: 700900Mfr. Part #: 256949 This item is in stock Quantity -+ Add to Cart Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description For accuracy checks in phosphate (phosphorus) determinations Product Specifications Volume / Pack... DetailsBackDescription For accuracy checks in phosphate (phosphorus) determinations Product Specifications Volume / Package Quantity 500 mL Concentrations 1 mg/L PO4 Description Phosphate as PO4 (NIST) Parameters Phosphorus Platform Solution California residents see Prop 65 WARNINGS