fluorescein (soluble, D&C Yellow #7)/sufficient Glycerin/6.60 oz Dissolve the soap in the water, add the glycerin and tint it with the fluorescein. Shake well. Place a few drops of this preparation on the eyeglass and wipe off clean with a soft cloth. Formula No. Isopropyl Alcohol/85.0 Water/q.s.to 1.00 gal "Triton" X-100/0.1 Ammonium Soap/6.40 oz Water/14.9