Photo-Flo is used to reduced water tension allowing water to run off film without leaving spots. It also helps the film dry more evenly. I would suggest contacting Kodak directly for advise on handling and cleaning damaged film. You could also try contacting an archivist at a local museum that specializes in photography.

After you use Kodak Photo-Flo 200 Solution (16 oz), you do squeegee the film.

No - Drops mean nothing. if mixed too strong or too weak it will not work well. It is diluted 200:1 or 5ml to a liter or 2.5ml to 500ml. I use a small medical syringe to measure out the concentrate accurately. Works best if diluted in distilled water as tap water has dissolved minerals that induce marks on the film. After processing using tap water, the final step in wetting agent using distilled water works well. I use it one shot for each processing run.

The solution should be smooth if you follow the instructions listed on the bottle.

I am using it to recreate the mystery formula for the no-longer available Discwasher D4 fluid. According to online vinyl gurus: To 99% distilled water, 1% Isopropyl alcohol, add a single drop of Kodak Phot-Flo (as a wetting agent). For me, it works beautifully. My use is a couple drops on a brush. Can't speak to using large amounts in a record-cleaning machine, but I wouldn't hesitate. (btw the one large drop I added was to the D4 bottle, which is 1.25 oz.)

Very very long. Never seen one go bad

The recommended dilution is 1:200. The cap size cannot be measured.

This product is designed for use when processing Black and White Film only.