Henk;

You are confusing the term "blooming" with Bloom Index or BI. Blooming is the act of softening gelatin with a small amount of water prior to addition to the emulsion. BI or Bloom Index refers to the coagulating properties and viscosity of the gelatin. Figures usually range from 75 BI to 250 BI or even 300 BI. Normal photo grade gelatin is about 250 BI and at about 5 - 10% will coat properly at about 40C - 45C. If there are too many salts left in the emulsion it will be more fluid, and it will be more fluid if there is Alcohol present.

Remember, coat film and plates on a surface that is hot and with the plate hot, but coat paper on a cold surface for best results. Make sure that your coating instrument of whatever kind is hot.

PE