AgroMAT AG-1, Clay Soil
Code: QX102850

AgroMAT AG-1, Clay Soil

Previous QMX Code: 140-025-101

AgroMAT™ AG-1, Clay 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-1 is a natural agricultural clay 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 for statistical calculation.

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

AG-1 AgroMAT™ Clay Soil        
Parameters Method Unit Consensus Value Confidence Interval Tolerance Interval
Phosphorus Mehlich III   8.37 7.26 – 9.48 1.62 – 15.1
Olsen 33.1 28.8 – 37.4 8.66 – 57.5
Potassium Ammonium Acetate ppm 337 307 – 367 149 – 524
Mehlich III 387 370 – 404 276 – 498
Calcium Ammonium Acetate ppm 2030 1943 – 2117 1528 – 2532
Mehlich III 2580 2084 – 2255 1620 – 2719
Magnesium Ammonium Acetate ppm 214 197 – 230 111 – 316
Mehlich III 285 274 – 295 217 – 352
Zinc DTPA ppm 0.67 0.58 – 0.76 0.19 – 1.16
Mehlich III 2.38 2.28 – 2.48 1.73 – 3.02
Manganese DTPA ppm 41.7 38.9 – 44.5 27.2 – 56.3
Mehlich III 238 223 – 253 138 – 338
Copper DTPA ppm 1.26 1.19 – 1.34 0.87 – 1.66
Mehlich III 0.61 0.52 – 0.70 0.061 – 1.16
Iron DTPA ppm 102 95.9 – 109 67 – 138
Mehlich III 584 541 – 628 297 – 871
Boron Hot Water ppm 0.5 0.4 – 0.6 0 – 1.07
Mehlich III 0.76 063 – 0.88 0.05 – 1.46
Sodium Ammonium Acetate ppm 71.3 67.4 – 75.1 47.9 – 94.6
Mehlich III 80.2 74.1 - 86.3 46.6 - 114
Sulfur Mehlich III ppm 19.7 18.7 - 20.6 14.1 - 25.2
Aluminum Mehlich III ppm 1519 1451 - 1586 1123 - 1914
pH 1 :1 Soil :Water ----- 7.04 7.0 – 7.08 6.81 – 7.28
1 :2 Soil :Water 7.16 7.1 – 7.21 6.82 – 7.49
Saturated Paste 6.94 6.84 - 7.05 6.44 - 7.45
Buffer SMP 7.19 7.06 – 7.32 6.51 – 7.86
Organic Matter LOI % 3.74 3.49 – 3.98 1.92 – 5.55
Walkley Black 2.21 2.02 – 2.40 1.18 – 3.24
Nitrogen as Nitrate KCl ppm 9.75 9.34 – 10.2 7.01 – 12.5
Soluble Salts 1 :1 Soil :Water uS/cm -287 ----- -----
1 :2 Soil :Water 197 184 – 211 113 – 282
Saturated Paste -597 ----- -----

Most participating labs used ICP or AA to test metals. ICP and colorimetric method have been used for phosphorus testing, colorimetric for Olsen extraction methods and 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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