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PAO Accredited Laboratories (as of Dec. 2012) - DTI

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Cl<strong>as</strong>s <strong>of</strong> Test/Product<br />

Not applicable In presence<br />

<strong>of</strong> urea<br />

Applicable to urea only Biuret<br />

Di-Ammonium<br />

Phosphate (DAP)<br />

Mono-Ammonium<br />

Phosphate (MAP)<br />

Specific Tests or<br />

Me<strong>as</strong>urements<br />

342 <strong>of</strong> 391<br />

Method Used/Reference<br />

Standard<br />

Zn<br />

Boron (Carmine method)<br />

Spectrophotometry/ B<strong>as</strong>ed on<br />

SMEWW, 21 st Ed., 2005<br />

Organic Carbon Black-Walkey method/ Laboratory<br />

Manual for the analysis <strong>of</strong> Soils,<br />

Water, Fertilizers, Feeds, Plant<br />

Tissues, Sugarcane Juices and<br />

Sugars<br />

Phil. Sugarcane Commission, 1977<br />

Organic Matter Black-Walkey method/ Laboratory<br />

Manual for the analysis <strong>of</strong> Soils,<br />

Water, Fertilizers, Feeds, Plant<br />

Tissues, Sugarcane Juices and<br />

Sugars<br />

Phil. Sugarcane Commission, 1977<br />

Nitrogen (ammoniacal) Magnesium Oxide Method/ AOAC<br />

920.03<br />

Colorimetry/ PNS 88:1986<br />

Ammoniacal Nitrogen Kjeldahl Method (Magnesium<br />

Oxide (MgO) Method)/ AOAC<br />

920.03 (18 th Ed.)<br />

Available P2O5<br />

Spectrophotometric<br />

Molybdovanado-phosphate Method<br />

/ AOAC 920.03 (18 th Ed.)<br />

Ammonium Phosphate<br />

(NH4)2HPO4<br />

Water Sol. P2O5<br />

Spectrophotometric<br />

Molybdovanado-phosphate Method<br />

/ AOAC 920.03 (18 th Ed.)<br />

Citrate Sol. P2O5<br />

Spectrophotometric<br />

Molybdovanado-phosphate<br />

Method/ AOAC 920.03 (18 th Ed.)<br />

Moisture Air-oven Method/ AOAC 920.03<br />

(18 th Ed.)<br />

pH (10%) pH meter/ AOAC 920.03 (18 th Ed.)<br />

Pot<strong>as</strong>sium Sulfate (K2SO4) Total K2O Volumetric Sodium Tetraphenyl<br />

Boron Method (STPB)/ AOAC<br />

920.03 (18 th Ed.)<br />

Sulfate Gravimetric Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Chloride Volhard Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Moisture Air-oven Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Pot<strong>as</strong>sium Nitrate (KNO3) Nitrogen, Nitrate Devarda Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Total K2O Volumetric Sodium Tetraphenyl<br />

Boron Method (STPB)/ AOAC<br />

920.03 (18 th Ed.)<br />

Trisodium Phosphate (TSP) Total P2O5 Spectrophotometric<br />

Molybdovanado-phosphate<br />

Method/ AOAC 920.03 (18 th Ed.)<br />

Available P2O5 AOAC 920.03 (18 th Ed.)<br />

Water Soluble PO4 AOAC 920.03 (18 th Ed.)<br />

Moisture Air-oven Method/ AOAC 920.03<br />

Ammonium Sulfate<br />

(NH4)2SO4<br />

(18 th Ed.)<br />

Ammoniacal Nitrogen Magnesium Oxide Method / AOAC<br />

920.03 (18 th Ed.)<br />

Free Acidity Titrimetric Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Moisture Air-oven Method/ AOAC 920.03<br />

(18 th Ed.)<br />

Physical Form Visual/ AOAC 920.03 (18 th Ed.)

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