when putting protector on a suite, I use just a normal empty 500ml bottle with a trigger spray, comes out in a fine mist and cost nothing, I use my empty spotting liquid bottles, I always put my protector through a sieve first so never get any blockages, I use a pump up 4 litre solo sprayer for carpet protection, have no clue what the nozzle size is, I use the one that comes with the sprayer, I think you can get a bit arsey about what jet/nozzle to use, anyhow works for me...I always use a pump up orion 1.5 litre for applying pre spray , I mix it up warmish because if its to hot then it wont spray properly or Knackers the o ring inside, I would like to know if there is a pump up 1.5 that I can mix really hot liquid in, I tried the solo 1.5 but didn't like it, it kept falling over because the bottom isn't flat enough