Kevin Childress
© Tom Cooper
I can't give you what you are looking for. I always have a grey card (cut one down to a convenient size), and if I have to balance fluorescents, that is where I start. But fluorescent bulbs (and the sodium and mercury vapors listed in the same category) are not like other light sources. Lamps with a heat-based light source (such as the sun or incandescent bulbs) have a more-or-less continuous spectrum, and balancing them to a point where most colors are rendered close to expected is usually possible.
Because of the discontiuous nature of fluorescents, even if you have a grey card that is balanced grey, you could have a blue object look very dark because the bulb produces no wavelengths that the blue object reflects. You might have a green object that renders bright green because it is very efficient at reflecting the specific green that the bulb produces.
Now add to that a facility that is a number of years old, and the facilities people have not been careful about what type of bulbs have been used for replacements. (Think of an old church basement as an example.) You could end up with several different types of bulbs, and even the bulbs of the same type can be different if they are different ages. So even if you could get it close, different parts of the room can render differently because the bulbs are different.
I do not know enough about LED bulbs to know where they fall in this mess.
I wish I could be more helpful, but I can't.
Kevin Childress
Because of the discontiuous nature of fluorescents, even if you have a grey card that is balanced grey, you could have a blue object look very dark because the bulb produces no wavelengths that the blue object reflects. You might have a green object that renders bright green because it is very efficient at reflecting the specific green that the bulb produces.