Services We Provide


Overview of Services

Mineral slurries are used in the papermaking and paint production process. These slurries
are expected to have a high brightness (whiteness) and low viscosity in order to
enhance the coating ability of the paint or gloss of the paper. Bacterial contamination can
cause the mineral slurry to “lose” brightness or “gain” viscosity, making the mineral slurry
less desirable to the final customer until these properties are corrected. The use of
biocides, at levels predetermined by the customer, mitigates the growth of bacteria and
maintains product quality.


  • Chemical Testing
    Analysis of incoming samples for biocide content using HPLC, GC,
    spectrophotometer, or colorimetry.

  • Microbiological Testing
    Contamination monitoring using Dipslide, Petrifilm, or Standard Plate Count

  • Product Testing / Evaluation / Research
    Evaluation of biocides that are currently not used by the customer in order
    to reduce cost of operations for the customer, enhance efficacy of final
    product, or enhance chemical compatibility with customer’s process.

  • Consulting Services
    Audit of facility to determine possible points of bacterial contamination
    and/or biocide depletion through chemical interactions.

  • Interpretation / Recommendation based on test results, if made, are based on
    criteria specified by the customer.
    Example
    Analysis of sample from customer’s product tank indicates that tanks has
    biological contamination in excess of customer’s specifications or biocide
    level lower than customer’s specification. Customer is notified of results and
    how much biocide to add to the product tank in order to correct the out-of-
    spec situation.
Equipment that we use

  • High Performance Liquid Chromatograph (HPLC)
  • Gas Chromatograph (GC)
  • UV specrophotometer
  • Moisture Balance
Ken P McDonald, LLC dba
Analytical Alternatives * 360 Stephens Road * Tennille, GA  31089
Phone: 478-553-0424 * Fax: 478-553-9942
Ken P McDonald, LLC dba
Analytical Alternatives