Page 186 - Catalog Instruments and Supplies

186 SCP SCIENCE
Standards Reagents and CRMs

Matrix Reference Materials
AgroMATTM

claY soil ag-1 Extraction Units Consensus Confidence Tolerance
Method Interval Interval Interval
Parameter ppm
Mehlich III ppm 8.37 7.26 – 9.48 1.62 – 15.1
Phosphorus Olsen ppm 33.1 28.8 – 37.4 8.66 – 57.5
Potassium ppm 337 307 - 367 149 – 524
Calcium Ammonium Acetate pH 7 ppm 387 370 - 404 276 – 498
Magnesium Mehlich III ppm 2030 1943 - 2117 1528 – 2532
Sodium ppm 2170 2084 - 2255 1620 – 2719
Zinc Ammonium Acetate pH 7 ppm 214 197 - 230 111 – 316
Manganese Mehlich III ppm 285 274 - 295 217 – 352
Copper ppm 71.3 67.4 – 75.1 47.9 – 94.6
Iron Ammonium Acetate pH 7 ppm 80.2 74.1 – 86.3 46.6 – 114
Boron Mehlich III ppm 0.67 0.58 – 0.76 0.19 – 1.16
Sulfur ppm 2.38 2.28 – 2.48 1.73 – 3.02
Aluminum Ammonium Acetate pH 7 ppm 41.7 38.9 – 44.5 27.2 – 56.3
Mehlich III ppm 238 223 - 253 138 – 338
pH DTPA ppm 1.26 1.19 – 1.34 0.87 – 1.66
Mehlich III ppm 0.61 0.52 – 0.70 0.061 – 1.16
Organic Matter DTPA ppm 102 95.9 - 109 67.0 – 138
Nitrogen as Nitrate Mehlich III ppm 584 541 - 628 297 – 871
Soluble Salts DTPA ppm 0.50 0.40 – 0.60
Mehlich III ppm 0.76 0.63 – 0.88 0 – 1.07
DTPA ppm 19.7 18.7 – 20.6 0.050 – 1.46
Mehlich III ----- 1519 1451 - 1586 14.1 – 25.2
Hot Water ----- 7.04 7.00 – 7.08 1123 – 1914
Mehlich III ----- 7.16 7.10 – 7.21 6.81 – 7.28
Mehlich III ----- 6.94 6.84 – 7.05 6.82 – 7.49
Mehlich III % 7.19 7.06 – 7.32 6.44 – 7.45
% 3.74 3.49 – 3.98 6.51 – 7.86
1 :1 (Soil:Water) ppm 2.21 2.02 – 2.40 1.92 – 5.55
1 :2 (Soil:Water) uS/cm 9.75 9.34 – 10.2 1.18 – 3.24
Saturated Paste uS/cm (287) 7.01 – 12.5
uS/cm 197 ----
Buffer SMP (597) 184 - 211 ----
LOI 113 – 282
----
Walkley Black ----
KCl

1 :1 Soil :Water
1 :2 Soil :Water
Saturated Paste

Description Quantity Catalog No.
175 g 140-025-101
Clay Soil AG-1

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