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Appearance Clear to colorless liquid;
H3PO2 50% min;
H3PO3 0.3% max;
Na 0.1% max;
Sulfate 50ppm max;
Cl 80ppm max;
Fe 5ppm max;
We have medicine grade filter apparatus which diameter is more than 0.6 nanometer to keep off the impurities, and we have improved the odd technology to make the color better( less than 5 Hazen) , I think our products can meet your require.
If any query, please contact with me without hesitation!
Thanks and Best Regards,
Lian Xing Chemical Co. , Ltd International Trade Dept