Quality
Quality & safety
Controlled sieving, tested chemistry and heavy-metal safety.
Slow-release potassium
Lower solubility than KCl / K₂SO₄ means less leaching.
No acidification or salinization
pH 6.71–7.59, salinity 0.056–0.128 dS/m.
Micronutrients
Supplies Fe, Mg and traces of Zn, Co, Ni, Mn.
Heavy-metal safety (ppm)
| Sample | Cu | Pb | Zn | Ni | As | Cd | Co | Cr |
|---|---|---|---|---|---|---|---|---|
| El-Gedida E | 3.7 | 2.0 | 86 | 15.4 | 2.4 | <0.1 | 25.8 | 110 |
| El-Gedida W | 2.4 | 0.3 | 208 | 30.7 | 2.2 | <0.1 | 28.0 | 130 |
| CFIA limit | 400 | 150 | 700 | 62 | 13 | 3 | 34 | 210 |
All eight elements are below the CFIA limits. Agronomic performance still needs field trials on local crops.
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