English is mine and I still had to look it up.

It seems they’re asking if it’s medical grade silver.

https://www.qwant.com/?q=colloidal+silver

I can’t tell if there are actually people put there who don’t know what Blade Runner is. I may be getting too old to follow along with the youth of today, but to me, Blade Runner is as much a part of popculture as Star Wars and Harry Potter.

Blade Runner, at its core is about a dystopian future where artificial humans, called “replicants” have become part of society, yet are seen and treated as lesser. This is a very simplistic description, but there’s a lot of philosophical discussions about what it means to be human and whether or not we can dehumanize artificial humans if what they sense and feel is real to them despite their bodies, brains and memories all being artificial.

In essence it is about empathy.

Sadly, a lot of people who watch blade runner fail to understand its message and just see a protagonist be an unempathetic pos to replicants in several scenes and deem it a misogynistic and bigoted work, which is certainly a take one can have if they insist on being complete media illiterate, but on a deeper level, the movie is definitely wanting people to consider what humanity is and what makes someone human and that everyone deserves empathy. Else we will end up with a cold, brutalist society where you can meet someone and question their validity as a human.