Automated plate streaking

The vital, routine task of plate streaking to isolate a pure culture is inefficient and time-consuming, significantly slowing microbiologists' responses.

Photo: Automated plate streaking

At last, automated testing, which has transformed many laboratory procedures, also looks set to transform this procedure. Following a licensing agreement with LabTech Systems of Kent Town, Australia, the diagnostic equipment distributor BioMérieux Clinical Diagnostics of Marcy l’Etoile, France, has developed the patented robotic Previ Isola automated pre-pour media streaker.

This piano-size equipment contains a plastic, sterile, disposable comb-like applicator. Specimens are put on the agar plates and the comb is placed above them. The plates spin and the combing then streaks plates consistently, without the variations seen with manual processing. That alone marks a major advance because inconsistent streaking can seriously lessen the success of a culture.

The Previ Isola simultaneously holds up to five types of media, including biplates, and can process 180 plates an hour, far more than even the most efficient manual processing. In addition there is no cross-contamination. Previ Isola’s joint inventor John Glasson, former chief scientist at the Institute of Medical and Veterinary Science, Adelaide, Australia, says that he had become ‘fed up’ with the bore of taking samples in diagnostic laboratories. Nearly three quarters of microbiology costs came from personal labour, he observed, ‘so there was a clear need to automate what we do at the bench. When the machine sees a particular type of specimen, it can work out which agar plates to select for that protocol,’ he explained. ‘As that is controlled by computer, once all the information is in, it is there forever. This means that if, for instance, you are looking for salmonella or campylobacter the machine can manage any of those plates. It is up to the microbiologists to select what plates to use. They programme the machine.’

Report: David Loshak

19.11.2008

More on the subject:
Read all latest stories

Related articles

Photo

Multiple tumor tissue biomarkers

MOSAICA: next-generation biopsy technology

A new biopsy tool will enable scientists and clinicians to simultaneously profile many biomarkers in cells and tissues.

Photo

Potential game-changer

Telling COVID-19 apart from influenza

Researchers have developed a diagnostic for SARS-CoV-2 that is capable of differentiating between COVID-19 and the garden-variety bug with fast turnaround.

Photo

Mini-microscopes

Are disposable robots conquering the labs of the future?

The team at the Institute of Medical Device Technology at the University of Stuttgart, Germany, is developing methods to produce top-quality medical devices at affordable prices. Professor Dr Peter…

Related products

Alsachim - Dosimmune immunosupressant Alsachim – kit (CE-IVD or RUO)

Clinical Chemistry

Alsachim - Dosimmune immunosupressant Alsachim – kit (CE-IVD or RUO)

Alsachim, a Shimadzu Group Company
Alsachim – Dosimyco immunosupressant reagent kit (RUO)

Clinical Chemistry

Alsachim – Dosimyco immunosupressant reagent kit (RUO)

Alsachim, a Shimadzu Group Company
Alsachim – Dosinaco anticoagulant reagent kit (RUO)

Clinical Chemistry

Alsachim – Dosinaco anticoagulant reagent kit (RUO)

Alsachim, a Shimadzu Group Company
ASP Lab Automation – Bench-top Decapper DeCap Pro

Sample Processing

ASP Lab Automation – Bench-top Decapper DeCap Pro

ASP Lab Automation AG
ASP Lab Automation – Recapper KapSafe

Sample Processing

ASP Lab Automation – Recapper KapSafe

ASP Lab Automation AG
ASP Lab Automation – Tube Sorter SortPro

Sample Processing

ASP Lab Automation – Tube Sorter SortPro

ASP Lab Automation AG
Subscribe to Newsletter