Something new! To give this gasdget its full title: 84 Disinfection Water Maker Electrolytic Generator Sodium Hypochlorite Disinfectant Liquid Making Machine USB Charging Phone Sterilizer this product from Banggood generates disinfectant liquid from nothing more than common salt and water using a process called electrochlorination.
Given the rather unique circumstances we find ourselves in today – I thought it worth putting something in the blog on the subject and Banggood were kind enough to send me one of these inexpensive units to play with.
In essence, take a plastic container with fresh water and add table salt, run a DC current through it using stainless electrodes (so they won’t corrode) and over time you will see hydrogen bubbles appear – and you will end up with a container of sodium hypochlorite – bleach (in water) – which can then be used to clean and disinfect. The upshot is that a number of gadgets are appearing on the market to do this for you. One option is a USB-charged, battery powered container like this one – generating (off-load) 5v – dropping as needed to keep a constant current.
Typically such devices will come complete with aesthetic coloured lights.
Here is the relevant Wikipedia article on the chemistry – and Big Clive’s video on a cheap example gadget. I’m assuming not that many of you are interested in commercial – large scale bleaching – there’s plenty of information out there if you are.
It’s not that long ago I got my first battery powered touchless foaming unit – you’ll see it here and it is now in daily use back in the UK in our holiday rental property – pretty much essential really given the current pandemic. And now I can even make my own disinfectant out of plain old salt and water? Ok, I’m happy to have you doubting this – I was convinced the whole thing was a con until I looked into the chemistry and went off to Banggood to get a unit. See my attempt at a short accompanying video below…
This spray container uses a USB-charged, battery-powered system which – a bit like those ultrasonic cold steam generators you see in garden centres which take plain water and generate utterly cold steam to add humidity to the air, this device converts salt and water into disinfectant in typically 5-10 minutes depensding on the setting. Instructions are in English and are pretty comprehensive. Trust me it works – you can smell the chlorine. The sterilization claim is 99%
In short, this device uses low voltage to turn simple salt and water into disinfectant. Depending on the setting of the timer button, you get a mild disinfectant suitible for cleaning fruit, seafood, vegetables, meat and other edible materials or a stronger version for cleaning floors, car interiors, toilets etc – but I’m not going to run through all of that here.
I like this easy-to-use gadget and suggest if you are not familiar with these, you do a little reading – Banggood product and Wikipedia information links above.
From scratch, with a flat battery, the unit shows a red light – once charged it turns green – while generating mild disinfectant it glows blue, for stronger disinfectant – it glows purple – in both cases generating fine bubbles in the process. This is GREAT fun. I thought it might make sense to put a label on my storage bottle – in case anyone took the contents to be drinking water.
The solution can be stored and diluted for hand-washing and disinfection, pet washing etc – all covered in the supplied manual. The unit comes complete with USB lead and measuring spoon.