VWR® ARISTAR®, Sulphate Standard Solution, 1000 mg/L SO₄²⁻ in Water (from K₂SO₄) Standard for Ion Chromatography
K₂SO₄ in H₂O.
Traceable to SRM from NIST, tested in an ISO Guide 34 / ISO17025 accredited laboratory
Supplied with certificate of analysis.