LED fluro tubes

[Tonyz]

How can I tell if fluro tubes are LED or not, Slowly cleaning everything and at same time have been made aware of 'free fluro light exchange

[BobL]

LED lights
- normally have a transparent plastic (polycarbonate) outer shell. Tapping them with a metal key will make a "chack" rather than a "chink" sound.
- will come on instantaneously
- are usually lighter than the glass tubes - not by much so you can't really tell without using a weight balance.

[Handyjack]

Have a look at any writing on the tube. Should tell you if it is LED or not.

[Tonyz]

ok something to go with..

[arose62]

Mine have a "This side up" marking, as there's an LED strip which needs to shine down.