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LY/T 1228-2015 Nitrogen determination methods of forest soils 360 (USD) via email in 1-3 business day VALID
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method 180 (USD) via email in 1-3 business day VALID
LY/T 3129-2019 Determination of the total copper, zinc, iron and manganese in forest soils by Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) 240 (USD) via email in 1-3 business day VALID
NY/T 889-2004 Determination of exchangeable potassium and non-exchangeable potassium content in soil 90 (USD) via email in 1-3 business day VALID
NY/T 890-2004 Determination of available zinc manganese iron copper in soil -- extraction with buffered DTPA solution 105 (USD) via email in 1-3 business day VALID
NY/T 1121.20-2008 Soil testing—Part 20:Method for determination of soil micro-aggregates distribution 135 (USD) via email in 1-3 business day VALID
LY/T 1234-2015 Potassium determination methods of forest soils 240 (USD) via email in 1-3 business day VALID
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