Lab Services

Cotey Chemical’s lab analysis focuses on the diagnosis of water well plugging issues.

Analysis – Sample Report (PDF)


There are two categories of testing that are used to classify plugging:

Water Analysis

Inorganic chemistries: pH, alkalinity, bicarbonate, carbonate, chloride, total dissolved solids, conductivity, total hardness, calcium, magnesium, copper, iron, manganese, phosphate, nitrate, silica, sulfate, tannin/lignin, potassium, sodium, chlorine, oxidation-reduction potential(ORP), total organic carbon (TOC), saturation index

Bacterial assessment: Heterotrophic plate count (HPC), sulfate reducing bacteria (SRB), iron precipitating bacteria (IPB), slime forming bacteria (SLYM)

Scale Analysis

The scale sample is digested with acid and is analyzed with spectrophotometric, turbidimetric, and/or titrimetric methods for final analysis.

These scientific parameters are tested for by standard methods so that the complete chemical layout of the well can be understood. Other information is also gathered such as formation identification, well history, well specifications, well use, and well construction. After gathering all this information Cotey Chemical can then recommend a well rehabilitation procedure tailored to the exact desires of the project. When the final lab report is given to the customer it includes a complete well rehabilitation procedure, chemical volumes necessary for the rehab, and results and interpretations of the water and/or scale lab test.

Titration of a water sample to determine hardness.