|
Test Items |
Specification |
|
Appearance |
White or off-white powder or grannies |
|
Assay |
≥92.0% |
|
Intrinsic viscosity |
|
|
PH(1% solution) |
5.0~7.5 |
|
Absorbance(4%, 400nm) |
≤0.12 |
|
Lead |
≤10ppm |
|
Loss on drying |
≤10.0% |
|
Total plate count |
≤100cfu/g |
|
Molds and Yeasts count |
≤100cfu/g |
|
Fecal coliforms |
Negative |
|
Pseudomonas Aeruginosa |
Negative |
|
Staphylococcus aureus |
Negative |
| Exclusive Use of PGA | PGA compound fertilizer |
| 1. Improve chemical fertilizer utilization2. Gather nutrients3. Promote root development, protein Synthesis | 1. Biodegrading of PGA gradually2. Releasing chelated fertilizer gradually3. Supplying nutrients continuously |
|
Test Items |
Specification |
|
Appearance |
White or off-white powder or grannies |
|
Assay |
≥30.0% |
|
Intrinsic viscosity |
|
|
PH(1% solution) |
4.0~8.5 |
|
Heavy metal |
≤20.0% |
|
Loss on drying |
≤10.0% |
|
Total Nitrogen |
5.0%~15.0% |