In a major leap forward for public safety, researchers have developed a groundbreaking laser technology capable of detecting deadly methanol inside sealed bottles.

The innovation comes as a vital response to the global threat of methanol poisoning, which claims hundreds of lives annually. The issue hit close to home recently following the tragic deaths of Australian teenagers Bianca Jones and Holly Morton-Bowles, who succumbed to tainted drinks while holidaying in Laos.

How the Laser Tech Works

Methanol is a highly toxic, industrial alcohol that the human body breaks down into dangerous compounds like formaldehyde and formic acid. Because it is cheap, it is sometimes illegally added to alcoholic beverages or accidentally produced during faulty distillation processes, posing a severe risk to travelers and locals alike in several overseas destinations.

Currently, testing for methanol requires opening the container and sending samples to a laboratory for a process called chromatography. However, the team at the Centre of Light for Life at Adelaide University has found a way to bypass this destructive and time-consuming method entirely.

"We create a cone-shaped laser beam that allows us to penetrate the bottle while completely avoiding the signals coming from the glass itself," explained PhD candidate Ané Kritzinger. "By slightly shifting the wavelength of the laser during measurement, we can identify even minute amounts of methanol."

The system is incredibly precise, capable of detecting methanol concentrations as low as 0.2 percent inside any bottle, regardless of the liquid type—be it vodka, whiskey, or tequila—or the color of the glass.

From Labs to Handheld Devices

While laboratory chromatography remains the industry standard, the researchers are looking to make this new technology highly accessible. The ultimate goal is to package the laser system into a portable, handheld device.

"When we make this handheld, it could be used virtually anywhere—in distilleries, at local bars, or by border control agents," said researcher Dr. Ralf Mouthaan. "It offers a proactive shield, ensuring drinks are safe before they ever reach a consumer's glass."

Broader Applications on the Horizon

Beyond saving lives from toxic spirits, the research team is eyeing several other commercial and agricultural applications for their light-shaping technology.

In South Australia's famous wine regions, the tool could be used to combat counterfeit wine and fraud. It also holds potential for detecting contaminants in olive oil, identifying counterfeit perfumes, and spotting trace microplastics in food and beverages.