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[Update] This week Innovation Origins reported on a dispersion coating that uses photosynthesis to kill viruses and bacteria. We based our findings on a press release from the Dutch company At the request of the manufacturer of the coating, the German company Varcotec, we have decided to partially withdraw that story because it allegedly contains inaccuracies.

According to Joachim Frings of Varcotec, the press release claims certain things that are not based on fact. One of the errors is the suggestion that the coating definitely kills all viruses and bacteria. In reality, the dispersion coating has been tested on several strains of viruses and bacteria. Those tests showed that the chance of survival for those strains of bacteria and viruses was virtually zero. This means there is a good chance that this also applies to other viruses and bacteria., one of the largest providers of online printed matter in The Netherlands and Belgium, has informed us that for the time being it no longer offers the products with the dispersion coating on their website and apologizes for the incorrect information provided.

Below, the original article as reported earlier today

We all know by now from COVID-19 that there’s a risk that the virus can survive for days on any kind of surface. From the refrigerated compartment in the supermarket to a shopping mall railing. Unfortunately, the coronavirus is not unique in this respect. For example, the common flu is also known to survive for days on a slippery surface such as paper. The e-coli bacterium can even survive for months on end.

It’s a problem that the German University of Regensburg has been working on for some time. In mid-2019 they brought out a study on a new type of coating that uses photosynthesis to kill viruses and bacteria, published in the Journal of Hospital Infection. It was initially intended exclusively for hospital use. But a German paint manufacturer (Varcotec) thought that it might be a technique that could also be used for antibacterial dispersion coatings in the graphics industry. And now this coating, called “Lock-3“, has also reached The Netherlands.

The Dutch company announced today that it will use the new technology for virus-free and bacteria-free printed matter such as flyers and leaflets. Managing director Haico Meijerink states in a press release: “Our European partner network enables us to find and offer these kinds of innovations to our customers at lightning speed. We see a market particularly for companies that serve a broad public. Consider, for example, supermarkets and (hospitality) companies that are now delivering products to customers’ homes.” Drukwerkdeal is the largest online provider of printed matter and marketing materials in The Netherlands and Belgium.

Inverted suntan lotion

According to spokesman Lourens Scholing van Drukwerkdeal, the coating used is somewhat similar to suntan lotion. Except that it works precisely the other way around then. The coating is based on a photosynthetic process that accelerates the detrimental effect of sun- and other light on cell membranes of viruses and bacteria. Germs that come into contact with the coating die off almost immediately.