Thanks for your concise response. A few more questions:
- Does the apparently acceptability of deionized water for "standard" B&W work carry through to deionized water being acceptable for;
1. home brew developers etc. ?
2. alternative process solutions ?
3. emulsion making ?
To rephrase my question (while acknowledging the problems of making clear cut statements): Are there circumstances when distilled water is needed / a very good idea, and what benefits does distilled water offer over deionized?
PS) I'm in a hard water area.