Rubber plunger, not suited for ozone
I am not sure about the experience of the other reviewers, but the plunger has a strong rubber smell (think the smell of new tires), which makes it unsuitable for for ozone use. Silicone is supposed to be odorless. I already have another 200ml ozone syringe, with a white/milky plunger, and the plunger is completely odorless.
Rating: 1 stars