Ricca
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VeriSpec™ Mixed Anion Standard 7 150 ppm SO₄²⁻, PO₄³⁻; 100 ppm NO₃⁻, Br⁻, NO₂⁻; 30 ppm Cl⁻, 20 ppm F⁻ Manufactured andRiccaRV010685-50N$181.76Order will ship within 1-3 business days -
VeriSpec™ Mixed Cation Standard 6 50 ppm Li⁺; 200 ppm Na⁺, K⁺, Mg²⁺; 400 ppm NH⁴⁺, 1000 ppm Ca²⁺ Manufactured and Tested inRiccaRV010689-50N$181.76Order will ship within 1-3 business days