The 2 x 1 litre glass carafes are only compatible with the SodaStream Duo model and not with the older SodaStream Play model. The bottles are specially designed for the Duo and E-Duo sparkling water makers, but not for Play.

https://www.fust.ch/de/p/kuechengeraete/wasseraufbereitung-und-sprudler/trinkwassersprudler/sodastream/ersatzdeckel-edelstahl-1-l-glaskaraffe-duo-e-duo-2-stk-8737720.html

Yes, on the Sodastream website.

Only sodadsrem duo bottles go !

No, they are not. I was allowed to make this experience myself. The bottles are too big

Usually all SodaStream bottles fit, just look at the volume. Normally this item is suitable for your SodaStream :)

Yes

I gave my old Sodastream bottles to an acquaintance with the old system: https://support.sodastream.com/hc/de-at/articles/360055026274-Sind-bereits-existierende-Flaschen-und-Zylinder-kompatibel-mit-der-neuen-DUO-

Hello, only with the SodaStream Duo. They do not fit on Crystal or Spirit. Greetings Erwin

Hello The glass bottle has a diameter of 3cm and this is leak-proof according to my experience.

No. That's not true.

No, bottles and also the CO2 cartridge currently only work with the SodaStram Duo. My experience has also shown that only the new CO2 cartridges work with the Duo.

This reference includes 2 glass bottles

The glass carafes are only compatible with the DUO drinking water bubbler.