Suppose you want to IV a solution that is transparent or nearly so. You want to do so without the people present recognising what you inject for what it is. You want them to go home and tell their folks that you injected some green (blue etc.) stuff, so no one can't put two and two together.
What you need is a dye of a light colour other than red (so that registering is not obscured). It should be totally inert and harmless and produce plenty of colour when present in trace amounts. Any idea?
What you need is a dye of a light colour other than red (so that registering is not obscured). It should be totally inert and harmless and produce plenty of colour when present in trace amounts. Any idea?
