The classic fluorescent tube is gradually being banned from the European market due to increasingly strict EU regulations on efficiency and hazardous substances inside the lamps. LED tubes already offer an excellent and efficient replacement there. Among them, there are currently two different versions:
the plastic variant and the glass variant. 

However, the main disadvantage of the lamps with plastic tubes is that – especially longer LED tubes – will often sag in the luminaire and additionally bend due to the heat generated during operation.

To clarify the comparison between plastic and glass tube, we have made the test for you. In our video you can see both variants before and during operation:

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In this comparison, you can see that the plastic tube already sags before switching on in the "cold" state (see graphics above left). No deformation can be seen with the glass tube.

After about one minute in operation (shown in time-lapse in the video), the plastic lamp in the luminaire has bent in the opposite direction towards the luminaire (cf. graphics above center) – the glass tube, on the other hand, remains firmly in its shape (cf. graphics above right). 

More attractive, therefore, is the variant made of glass, which comes optically very close to the fluorescent lamp. We have therefore switched our portfolio exclusively over to LED tubes made of glass*, which are provided with special shatter protection for safe use. 

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Here you will also find helpful hints for determining the operating mode of your luminaire.

*Exception: T9 in ring shape