D DiyNutJob Joined 29 Aug 2011 Messages 4,397 Reaction score 361 Location London Country Today at 4:50 PM #46 Avocet said: The genuine one has more than double the number of tubes - much smaller bore and flatter, so the have a huge "surface area-to-volume ratio". Click to expand... My cheap ebay one is same as your expensive one.
Avocet said: The genuine one has more than double the number of tubes - much smaller bore and flatter, so the have a huge "surface area-to-volume ratio". Click to expand... My cheap ebay one is same as your expensive one.
