4 ms·
I've been researching this and it's too bad that only a few companies produce these, and the pricing is outrageous! I understand they want to make sure only 222
by nikolay 4y ago
I've been researching this and it's too bad that only a few companies produce these, and the pricing is outrageous! I understand they want to make sure only 222nm UVC is produced, but still, come on!