


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.
Analysis of incoming samples for biocide content using HPLC, GC,
spectrophotometer, or colorimetry.
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.
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
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Ken P McDonald, LLC dba
Analytical Alternatives