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FEATURE MEDICAL EQUIPMENT & DEVICES


REVOLUTIONISING LIQUID ANALYTES LAB TESTING


best product development and speeds up time to market.”


ELIMINATING CONTAMINATION RISKS Just like a regular Quest diamond puck, the Arrow’s ultra-thin silicon wafer ATR can be used to analyse forensic, microbiological, food and drink and paint coatings samples, yet more cost efficiently. Rather than placing samples directly onto the puck, samples can be prepared in batches away from the spectrometry unit and analysed consecutively. To avoid the risk of cross contaminating


From prototype to full scale production, technical moulder Broanmain Plastics has assisted lab testing spectrometer innovator to develop a unique puck and slide concept that prevents cross contamination of food & drink, microbiological, chemical and forensic liquid laboratory samples


xxxaccessories used in the laboratory analysis of specimens in a wide range of scientific and industrial settings, - from life science research to polymers and plastics - recently unveiled its revolutionary ATR (Attenuated Total Reflection) consumable puck and slide innovation. The unique Arrow concept comprises a puck and silicon wafer ATR consumable polypropylene slides featuring overmoulded lids, allowing lab scientists to batch test, save and cross-compare chemical changes in samples over a period of time. Removing the need to clean the spectrometry


S


puck between each individual lab sample has been hailed by Specac and industry experts as a major scientific breakthrough, as it safeguards against sample cross contamination as well as speeding up analysis. Technical tool developer and injection


moulding specialist Broanmain previously assisted Specac with its development of a new ATR accessory for the company’s high-spec offering to the spectroscopy market. This project’s success instilled so much confidence in Specac’s team, they invited Broanmain’s tooling and production professionals - Kamil Stec and Thomas Catinat - to input into the full development of this completely new ATR concept.


26 FEBRUARY 2021 | IRISH MANUFACTURING pecac Ltd, a global provider of spectroscopic


TAKING ATR IN A NEW DIRECTION Specac’s original concept was to create a disposable puck for high volume hazardous applications. Yet, through the company’s collaborations with Broanmain, the idea progressed to the development of an aluminum holding puck and disposable recyclable silicon ATR slides, which used less material, so was less wasteful. At the very first meeting, suggestions for tooling


and material mouldability were made. Within a week Broanmain had commissioned a specialist to build the prototype Arrow aluminium tooling for the slide with a built-in silicon wafer ATR crystal. As the slide must create a liquid tight seal between the well and ATR element whilst also aligning the optical components accurately, design precision was critical. The Broanmain team also pooled their expertise in overmoulding and material selection for the development of the innovative disposable Arrow slide, opting for an acid resistant 100 per cent recyclable polypropylene combined with elastomer. The result was a single component, cleverly constructed to reduce part count and manufacturing complexity. Specac’s strategic buyer Anthony Gomme


comments: “It’s always our experience that collaboration with a production partner like Broanmain at the earliest stage results in the


samples or evaporation, a cap can be pressed down over the well. This enables scientists to archive samples or perform long running tests using different solution concentrations to observe chemical changes in the samples. Additionally, an overmoulded seal clips down to ensure long term storage without risk of the sample leaking past the silicon wafer. Specac’s project leader Michael Ramsay explains


more and why the Arrow ATR warranted a patent: “The method of overmoulding the clipping mechanism on the slide and the process of removing slides from the spectrometry unit is very novel. From a productivity perspective, labs can now batch prepare and analyse over 25 samples in less than 10 minutes, with no cleaning of the puck between tests.” Citing the importance of analysing the


composition of food and drink commodities and ensuring samples are not cross contaminated, Ramsay expands: “In the food supply chain, brand integrity, authencity and traceability is critical. Correct labelling of calorific and nutritional content help consumers stay within recommended limits. This requires accurate quantification of the composition of food and drink to ensure full compliance with local labelling regulations. Quality control is stringent. These food analysis tests are typically performed in large batches, where speed and accuracy is critical.” Launched in July 2020, Broanmain has now


scaled up into full production of the Arrow puck and slides at its state-of-the-art Dorking facility. Operations Manager Thomas Catinat comments: “It’s always exciting to be involved in such a revolutionary market development that has the potential to reshape how scientific communities will perform sample analysis in the future. As these processes become increasingly automated, innovations like the Arrow ATR will yield more accurate and reproducible results.”


Broanmain Plastics www.broanmainplastics.co.uk


/ IRISHMANUFACTURING


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