Automated preservative efficacy test method and device
US9625479B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | May 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/00702
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A preservative efficacy test for determining efficiency of at least one preservative material that is present in a consumable product to reduce or eliminate living microorganisms that includes challenging the preservative material with at least one microorganism derived from a pure culture by inoculating a sample of the product with a quantity of at least one challenge microorganism and allowing the microorganisms to grow for an predetermined interval after which the preservative is neutralized and a portion of the resulting sample is cultured in a testing system that includes at least one testing container, wherein the testing container contains liquid growth media and sensor means capable of monitoring microorganism growth by sensing the metabolic by-products generated by growth of microorganisms present in the liquid growth media and producing an output signal that can be measured and analyzed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.