 
     (1) Dawb hmoov. Qhov ceev yog 2.484 ntawm 20 ℃. Melting point yog 616 ℃, soluble hauv dej yooj yim, tab sis tsis nyob rau hauv cov organic hnyav. Nws yog ib qho dej muag muag zoo.
| Yam khoom | RESULT (Tech qib) | RESULT (Qib zaub mov) | 
| Tag nrho cov phosphates (raws li P2O5) % ≥ | 68.0 ua | 68.0 ua | 
| Inactive phosphates (raws li P2O5) % ≤ | 7.5 | 7.5 | 
| Fe% ≤ | 0.03 ib | 0.02 ib | 
| Dej tsis sib haum % ≤ | 0.04 ib | 0.06 ib | 
| Arsenic, as | / | 0.0003 | 
| Heavy hlau, raws li Pb | / | 0.001 ib | 
| PH ntawm 1% tov | 5.8-7.0 Nws | 5.8-6.5 | 
| Dawb | 90 | 85 | 
Pob:25 kg / hnab los yog raws li koj thov.
Cia:Khaws ntawm qhov chaw ventilated, qhuav.
Executive Standard:International Standard.