Visual colour change verifies salmonella sampling procedure

Hygiena now offers the InSite Salmonella rapid micro-organism test

The InSite Salmonella test is a self-contained, ready to use swab test

Hygiena has added InSite Salmonella to its rapid micro-organism tests, a rapid and convenient colorimetric Salmonella species test for environmental surfaces.

The all-in-one test format contains both the pre-enrichment and selective enrichment procedures, maintains security and minimises the risk of cross contamination. It also retains the active culture for any subsequent verification and identification tests.

InSite Salmonella is a self-contained, ready-to-use swab test which contains a special liquid medium that changes colour when Salmonella species are present in the sample. A colour change from purple to bright yellow indicates presence, with positive results available in 24 hours from sample collection.

A short pre-enrichment period of six hours gives the optimum and earliest detection of presumptive positive samples in the 24-hour period.

Optional overnight or 24-hour pre-enrichment enables detection of such samples in 48 hours. The all-in-one test device eliminates the need for sample preparation materials and therefore saves costs.

A colour change from purple to bright yellow indicates the presence of Salmonella

InSite Salmonella’s design eliminates the need for any special preparation, measurement, or enrichment outside the test device, simplifying the assay so that any user can successfully run the test, thus virtually eliminating the possibility of operator error.

The incorporation of a large foam swab bud improves sample collection, while enabling the coverage of a large surface area for environmental surface testing, the company says. The neutralising non-selective pre-enrichment broth used enables detection for even low numbers of Salmonella. It also minimises the effect of residual sanitisers while also facilitating the recovery of stressed cells.

InSite provides a proven performance for the detection of Salmonella, but with little interference from non-Salmonella bacteria.

Environmental pathogen screening, such as with InSite Salmonella, is a critical element of a comprehensive environmental monitoring programme for certain food manufacturers. Not only does environmental monitoring verify that a sanitation procedure is effective, it is also part of a well-designed preventive control verification programme. The US Food and Drug Administration’s proposed rule for preventive controls in the Food Safety Modernisation Act suggests emphasis on environmental pathogen monitoring for food processors with significant contamination risk. Accordingly, InSite Salmonella meets the needs of food processors for a rapid, convenient, and affordable environmental pathogen screening test kit.