Update with some more info:
https://www.compoundchem.com/2020/03/04/hand-sanitisers/ has some general information about hand sanitisers and includes info about BZK—they caution that it works less quickly than alcohol based ones, so perhaps that’s useful to take into account.
Also, it may interest some people that BZK is the active ingredient in Lysol spray (US) and Dettol spray (UK). (Do not use them as hand sanitiser as they have other ingredients and are not formulated for hands!)
Update with some more info:
https://www.compoundchem.com/2020/03/04/hand-sanitisers/ has some general information about hand sanitisers and includes info about BZK—they caution that it works less quickly than alcohol based ones, so perhaps that’s useful to take into account.
Also, it may interest some people that BZK is the active ingredient in Lysol spray (US) and Dettol spray (UK). (Do not use them as hand sanitiser as they have other ingredients and are not formulated for hands!)