Microbiological Testing

We provide a range of services to meet your needs for Safety audits, HACCAP protocols, and your in-house QC criteria. Our microbiology department performs the following tests using methodology from BAM, USDA, AOAC, USP, EPA:

Laboratory techniques include MPN, Membrane filtration, MUG/MMO, CFU and VIA. As part of our Quality Assurance program, we participate in the AOAC Laboratory Proficency Testing Program (M01)

    • Total Aerobic Plate Counts

    • Yeast & Mold Counts

    • Coliforms - Total, Fecal, E. coli

    • Salmonella

    • Listeria spp.

    • Listeria monocytogenes

    • Staphylococcus aureus

    • E. coli 0157H7

    • Salmonella

    • Fecal coliforms

    • Escherichia coli

    • Total Plate Counts

Fertilizer Testing

We provide an extensive range of analytical services to meet the needs for new fertilizer product labeling registration, production monitoring / QC product development. Chemical and physical testing is also provided for other agronomic related materials - Limestone, Coated Slow Release (CSR) products, Pesticides & Herbicides. Continued involvement with The Association of Fertilizer & Phosphate Chemists (AFPC) and state regulators (AAPFCO) enables us to inform our clientele of regulatory issues that may affect the marketplace.

We maintain membership in the following organizations - TFI, AOAC, FFAA. Analysis of Fertilizer products conform to the methodology of AOAC, AFPC, FDACS, ASTM, ISO/CEN, EPA.

When the need arises, Thornton Laboratories can provide assistance with new method development and validation -SLV for peer review and publication.

    • Nitrogen

    • Available Phosphate (P2O5)

    • Potassium (K2O)

    • Calcium

    • Magnesium

    • Copper

    • Iron

    • Manganese

    • Zinc

    • Chloride

    • Sulfate

    • Boron

    • Ammonia -nitrogen

    • Nitrate -nitrogen

    • Urea

    • Arsenic

    • Cadmium

    • Chromium

    • Cobalt

    • Lead

    • Mercury

    • Molybdenum

    • Nickel

    • Selenium

    • Copper

    • Zinc