could be universal at no extra cost

That the connections of the hose have different Druchmesser (one side 8mm, 10mm the other) is really clever, because different brands are covered in this way. The one who has the siphon designed (the "Tee") was, unfortunately, not so clever -da fits namely only the 8mm-side of the tube top.
(Believe me: at 10mm to 8mm hose nozzles helps no clamp!)
Had run the nozzle stage for the condensate hose (below 10mm, 8mm above), you could simply cut the 8mm-piece if needed and connect the 10mm side of the hose. Would be so easy and not even more expensive to manufacture.

Dryer from Bosch / Siemens incidentally have an 8mm connector, that is hardly relevant for this market brands above problem.
I have applied 3 layers shrink tubing on the neck of the spigot, then it has also fitted the 10mm side of the hose. Teflon tape should go in principle, but a layer thickness of 1 mm is quite a lot and you have to be very careful that you do not abrubbelt it when pushing on the hose.

The hose connection for the end of the washing machine is unnecessarily also a bit too small-but because you can still help out with a clamp. Would have been well to avoid by simply had measured time a commercial connection ...

Another tip: If the dryer is not on the machine (or otherwise increases), then you should use the hose from the siphon from only slightly upwards result (eg at the top of the dryer tie), so that the waste water from the washing machine is not in the running back dryers.
For dryers without condensate pump (condensate tank bottom) can only work anyway all logically, if the dryer is increased. Water does not flow uphill precisely.

The hose is but great and with some reworking was also the siphon to use, so I forgive nor scarce 3 stars. For little money, I now no longer has to think about emptying the condensate container.