Charles Johnson

Charlie Johnson

Senior Toxicologist

Charlie Johnson,
Senior Toxicologist

Charlie joined the bibra team in mid-2015 after he completed his MChem degree, which included a six-month organic chemistry project in Queensland, Australia. He is now a senior toxicologist and manages a range of projects, notably for clients within the medical device, pharmaceutical and e-cigarette industries. He has a wealth of experience in the medical device sector. He has conducted biological evaluations for a variety of interesting devices with numerous medical applications, and routinely provides scientific advice to clients with a consideration of biocompatibility testing strategy. He actively keeps up to date with scientific and regulatory advances in the industry, notably with respect to the development of ISO 10993 standards.

Charlie has also been involved in projects assessing safety of e-cigarettes and e-liquids, often in the context of the EU Tobacco Products Directive (TPD) and US FDA Premarket Tobacco Product Application (PMTA) frameworks. He has also co-authored a poster (along with Richard Young) on "Application of the Human Health Risk Assessment Process for Evaluation Electronic Cigarettes" - click here to download.

Charlie’s interest in science is not limited to toxicology, but also extends to the world of beer and brewing. After moving out of London and into rural Kent, he is now an active homebrewer, and is always keen to discuss the amber nectar (with anybody that will listen)!

Charlie's case studies and blog posts

Save yourself the pain of last-minute reformulation with early ingredient screening

Blog articles

Developing a new consumer product? Maybe you’ve come up with the hottest new gadget or e-liquid flavour and are eager to get the product out to market as soon as possible. Prior to mass production, a safety evaluation is key. A preliminary screening assessment of the component ingredients during early development could save you a lot of time and money further down the line.

An overlooked aspect of organophosphorus compound neurotoxicity

Blog articles

Organophosphorus compounds (OPs) are widespread in both the natural and industrial worlds. Being major components of DNA and cell membranes, their diverse chemical properties are fundamental for the biology of life. But they also find uses in a range of anthropogenic applications, for example, as flame retardants, plasticisers, antioxidants and, perhaps most famously, as pesticides.

Determining a Specific Migration Limit (SML) for a data-deficient compound identified in food labels

Case study

The client was informed by a supplier that a chemical compound with a worrying structure was present within a food label ink. Click to find out how we dealt with it.

Want to read more case studies and blog posts that Charlie has been involved in? Click below to read more.

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