De-ionized water for HV probe

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Original poster: "Denicolai, Marco" <Marco.Denicolai-at-tellabs-dot-com> 

Hello all,

Can anybody tell me, is de-ionized water also free from dissolved gases?

I ask this because I'm going to fill my HV water probe (see
http://www.iki.fi/dncmrc/work/hv_divider.htm) with distilled and
de-ionized water instead than distilled and boiled water. This thing is
going to be 2.7 m tall, containing 20 liters of water inside. We are
going to hang it from the roof (16 m high) on the top of the Thor TC.

Regards