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Ammonia (NH3) is a gas, which is held in soil as ammonium.   Plant available ammonium nitrogen is the most correct expression, as ammonia has to be fixe...

Moisture content: Is the quantity of water contained in a material such as soil, rock, wood and other solid material.  Often referred to as water content. ...

When determining a concentration of microorganisms within a test sample using a technique which involves counting individual bacterial  colonies or colony f...

Nitrite (NO2) is chemically less stable than nitrate (NO3). Nitrite will oxidize and be converted to nitrate resulting in an underestimation of nitrite and a...

A number of factors are used to identify a sample as a hazardous waste and unfortunately it is not an interpretation we are able to make for you, as there a...

Surrogates are compounds added to the sample either at the initiation of the sample extraction process (Extraction Surrogate), or at a  step immediately pri...

Comments on Certificates of Analysis (data reports) are meant to acknowledge situations when sample data falls outside recommended control limits or when th...

An EMPC is defined in section 11.9.5.2 of Method 8290 as the following;   11.9.5.2 Estimated Maximum Possible Concentration -- An estimated maximum possib...

In many chemical analyses, specifically where Gas Chromatography (GC) is utilized for chemical separation, your data can be represented and interpreted in t...