On Thu, 28 Jan 2016 21:17:20 +0000, Mike Barnes wrote:

My pocket-sized bottle of spectacle lens cleaner has run out. Would it
be OK to refill it with ordinary (e.g. Sainsbury's) window and glass
cleaner?

Cheapskate? Me?

http://www.safechem.co.uk/index.php/...al-Laboratory/
LENS-CLEAN.html