JR, I can assure you that neither deionized or distilled water will dissolve glass or metal containers. They are both just very very pure forms of water, purified in by different techniques. Distilled water is purified by boiling and recondensing it, deionized water goes through a "deionizer". I drank deionized water for several years with no ill effects.

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Robert W. Roe
1984 300SD 169K mi