A man in Sydney has been charged with filling a lube dispenser with hydrochloric acid at a gay and bisexual sex club in Sydney's west.

The 62-year-old man allegedly tampered with the dispenser fitted to the wall in a room at the Aarows club in Bridge Street, Rydalmere, on Saturday.

Items in the room had been fitted with sensor alarms because similar tampering had happened several times recently, police said.

"Police will allege an alarm sounded and security detained the man before police from Rosehill Local Area Command attended," police said.

Hydrochloric acid is a clear, pungent chemical that is corrosive to the eyes, skin, and mucous membrane. It can cause burns to the skin depending on how concentrated it is.

No serious injuries have been reported to police and a worker at Aarows declined to answer questions on Sunday.