Everything you need to know.

The Flexcubes come in the following nominal volumes: 1kl/10HL/265Gal, 1.5kl/15HL/397Gal and 2kl/20HL/530Gal.
The walls are flexible, so expand and contract (slightly but significantly) when empty or full, so the dry volume will be smaller than the wet volume. So nominal means "approximate". The Flexcube holds something like 20-30L more volume than when it is empty.
Up to 4,000L/40 hl/1,060gal worth. That is equivalent to: 4x1,000 litre Flexcubes or 2x2,000 litre Flexcubes or 2x1,500 litre Flexcubes + 1x1,000 litre Flexcube.
Flexcubes are BPA free. BPA has no role in the manufacture of any components of a Flexcube, so Flexcubes are free of BPA. A BPA free statement can be downloaded here.
No. This has been verified in laboratories both sensorily and by analysis and in repeated analytical tests the company has conducted. A Phthalate-free statement can be downloaded here.
Yes. Just clean your Flexcube with caustic soda to de-colorise the polymer.
While all polymers scalp to some degree, tests have shown that the scalping of the polymer used in the Flexcube is sensorially insignificant and is much the same as the polymer disc in a metal screw-capped wine bottle.
Swiss laboratory (CIBA) reported migration according to EU migration standards is within safe levels. Sensory experience; in 10 years of Flexcube use throughout the globe there has been ZERO cases of 'plastic taint'. Regular HPLC / GC analysis of our polymers through accredited laboratories continually monitors this.
No. Hot water will distort the polymer and should never be used. Always clean your Flexcube with cold water and a 2% solution of caustic soda (sodium hydroxide) or similar.
Yes, the Flexcube is ozone-safe.