I've got a few proper lab glass 10/90 tubes left.http://biopowered.co.uk/forum/index.php?topic=1504.msg17642#msg17642https://www.google.com/search?q=Kimble+Kimax+45244-200&oq=Kimble+Kimax+45244-200&aqs=chrome..69i57&sourceid=chrome&ie=UTF-8Where are you in Bucks?
I've got a few proper lab glass 10/90 tubes left.