Correct, not argueing with anything your sayingthere ZF, but if they bothered to read the manual that comes with the tool then they'd see see that there is a warning about the pressure to be used, having the cap blow off and end up cleaning the mess is what I would class as geting lucky, I've seen people put these kits straight onto the wheel at full pressure and the reservoir just lets go right round the seam, then the fluid just sprays everywhere, then you have to clean up AND replace the reservior AND explain why the heater blower smells funny.
LOL, so true
The instructions are a little confusing, as the bottle itself says something like "test with 40psi before adding fluid", which I suggest not to do.
I find that just under 20psi works best, I use an old spare wheel that I can leave in a semi-flat condition, and just lift onto the engine when needed.
I bought my Eezibleed relatively recently and it came with four caps - one of them seems to fit OK but I have also saved the cap from an old FIAT 128 reservoir and intend to use that if I have problems.
The nice thing about the Eezibleed vs. other things hooked up to the bleed nipple (one-way valves, loops of pipe above the level of the caliper, etc.) is that with the Eezibleed you get to watch the fluid actually coming out, so you don't have to try and guess whether those air bubbles were a while ago or still coming out now.
If I get stuck and can't use the Eezibleed, I just leave a pipe attached to the bleed nipple (ideally going 'uphill' so that air goes to the top) and pump the pedal a number of times - as long as the pipe is full of air-free fluid when I tighten the bleed nipple, that works fine. No second person needed.