All Tests

78587-05-0

73790-28-0

Fe. This test method determines the concentration of iron in a water sample by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).The method has a detection limit of 0.01 mg/L.

This method quantitatively determines the concentration of iron in botanical materials utilizing a nitric-perchloric acid digestion. Digest analyte concentrations are determined by atomic absorption spectrometry (AAS) and/or inductively coupled plasma atomic emission spectrometry (ICP-AES). The method detection limit is approximately 0.5 mg/kg. Fe.

K fixation test by soil.

This method determines the amount of soil K fixation potential associated with illitic clay soils. Potassium is added to soil, then dried and incubated for seven days. Potassium concentration is determined using atomic emission (AES), absorption spectrometry (AAS) and inductively Coupled Plasma (ICP) instrumentation and fixation capacity calculated based on the amount of K recovered. Generally, the method is reproducible within ± 7% K on a given soil, or 3 - 5% on a soil K fixation basis.

Pb. This test method determines the concentration of lead by utilizing an acid digestion and determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

NO3-N, Olsen-P (Bray-P for pH<6), x-K.

This is a combined soil fertility test. It test the amounts of nitrogen, phosphorus and potassium.

Mg.

This is a soil salinity test. This method determines the amount of soil plant available magnesium on the soil colloid exchange sites by displacement with ammonium acetate solution buffered to pH 7.0. Cation concentrations are determined using atomic emission (AES), absorption spectrometry (AAS) or ICP-AES instrumentation. The method detection limit is approximately of 25 mg/kg and is generally reproducible ± 7%.

Mg. This test method determines the concentration of magnesium by utilizing an acid digestion and determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

Mn.

This is soil composition test by acid digest. This procedure analyzes the concentration of manganese by utilizing a nitric acid/hydrogen peroxide closed vessel microwave digestion. Determination is by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The approximate method detection limit is 1 mg/kg.

Mn. This test method determines the concentration of manganese by utilizing an acid digestion and determination by atomic absorption spectrometry (AAS). The method has detection limits ranging from 0.1 mg/Kg. The method is generally reproducible within 8%.

Mn.

This is a soil fertility test. The DTPA manganese extraction method is for estimating the potential soil. Analyte concentrations are determined by atomic absorption spectrometry (AAS) or Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The method detection limit is approximately 0.1 mg/kg.