AgroMAT AG-2, Sandy Soil
Code: QX102851

AgroMAT AG-2, Sandy Soil

Previous QMX Code: 140-025-102

AgroMAT™ AG-2, Sandy Soil

AgroMAT™ Matrix Reference Materials for agricultural laboratories are a cost effective solution for validation of internal standards or routine quality control verification of various analytical techniques for multiple parameter testing and can be an invaluable component of any laboratory quality control program.

AgroMAT™ AG-1 and AG-2 are soil Matrix Reference Materials for the analysis of micro-nutrients together with pH, organic matter, nitrate and soluble salt.

  • Consensus certification removes any chance of analytical bias
  • Each Matrix Reference Material is certified through a round-robin study employing specific methods of analysis - independent verification from multiple laboratories
  • Sampling, handling and extraction method information is included
  • Includes Certificate of Analysis listing Consensus Values, Confidence and Tolerance Intervals, and Instructions for Use - complete documentation for audit purposes

The Matrix Reference Material AG-2 is a natural agricultural sandy soil (not spiked or fortified) with a particle size of -200 mesh. It is designed to be used for quality control verification, internal standards validation or methods development for the analysis of the listed parameters using the indicated extraction methods. Not intended for calibration

Expiry: 2 years from date of shipment

AgroMAT™ Matrix Reference Materials are available for clay soil, sandy soil and compost.

Unit Size: 175g

Consensus values were the result of an inter-laboratory study involving forty-five laboratories. Each
laboratory was asked to supply analysis data for a specific list of parameters employing specific
extraction methods. Not all the laboratories supplied data for the different parameters.

Several extraction methods have been used by lab participants. Mehlich III, Olsen, Ammonium Acetate at pH 7 and DTPA are methods that had enough results to do statistical calculation.

Agricultural extraction methods for all elements are listed on the certificate of analysis.

AG-2 AgroMAT™ Sandy Soil        
Parameters Method Unit Consensus Value Confidence Interval Tolerance Interval
Phosphorus Bray 1 ppm -47.3 ----- -----
Mehlich III 89.9 85.8 – 94.0 64.3 – 115.5
Olsen 45.6 41.1 – 50.2 20.8 – 75.5
Potassium Ammonium Acetate ppm 364 341 – 387 224 – 504
Mehlich III 398 380 – 416 286 – 511
Calcium Ammonium Acetate ppm 1370 1305 – 1435 995 – 1746
Mehlich III 1484 1426 – 1543 1110 – 1859
Magnesium Ammonium Acetate ppm 134 124 – 144 72.9 – 195
Mehlich III 186 178 – 194 133 – 238
Zinc DTPA ppm 0.79 0.73 – 0.85 0.47 – 1.11
Mehlich III 2.84 2.72 – 2.95 2.12 – 3.55
Manganese DTPA ppm 16.8 14.5 – 19.1 4.17 – 29.5
Mehlich III 156 147 – 164 103 – 209
Copper DTPA ppm 1.26 1.17 – 1.35 0.791 – 1.72
Mehlich III 1.25 1.09 – 1.41 0.270 – 2.23
Iron DTPA ppm 64.4 57 – 71.9 23.6 – 105
Mehlich III 700 660 – 740 437 – 963
Boron Hot Water ppm 0.39 0.28 – 0.49 0 – 0.95
Mehlich III 0.45 0.39 – 0.51 0.16 – 0.74
Sodium Ammonium Acetate ppm 35.4 32.8 – 38 19.7 – 51.2
Mehlich III 37.8 35.2 - 40.4 23.5 - 52.1
Sulfur Mehlich III ppm 15.2 14.6 - 15.8 11.9 - 18.5
Aluminum Mehlich III ppm 1354 1322 - 1387 1168 - 1541
pH 1 :1 Soil :Water ----- 6.89 6.86 – 6.93 6.67 – 7.12
1 :2 Soil :Water 7.02 6.98 – 7.07 6.76 – 7.29
Saturated Paste 6.85 6.74 - 6.96 6.33 - 7.37
Buffer SMP 7.06 6.95 – 7.17 6.53 – 7.59
Organic Matter LOI % 3.77 3.57 – 3.97 2.26 – 5.27
Walkley Black 2.79 2.63 – 2.94 1.96 – 3.61
Nitrogen as Nitrate KCl ppm 27.3 26.6 - 28.0 22.3 – 32.3
Soluble Salts 1 :1 Soil :Water uS/cm -334 ----- -----
1 :2 Soil :Water 199 188 – 211 121 – 277
Saturated Paste -551 ----- -----

Most participating labs used ICP or AA to test metals. ICP and colorimetric method have been used for phosphorus testing, colorimetric for Bray P1 and Olsen extraction methods, ICP for Mehlich III extraction method. For nitrates analysis, cadmium reduction with colorimetric method, ionic chromatography and segmented flow analyser have been used by most participating laboratories.

Values in brackets are not certified and are provided for information only.

Family
  • Matrix Reference Material
Product Type
  • Soil
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