Main thing is not number of devices (I'm sure with todays technology you can build 100s of them litteraly over night) but the way they measure that and results given. There was test a while ago, with 3 or 4 different devices where each of them showed different number for same ski. As based on current rules (regardless of date), old skis will be allowed to be used, which means it's not about if there is fluoro in base or not, but about how much fluoro there is and if it's under or above limit. With that, you need to have exactly same number as result every single time you test, regardless of device or test. And that's not what is happening now.
I have been talking with few old friends from xc side, and they all agreed that this is actually worse then doping. With current state of testing, you could actually get more profit out of this, then you would with doping. And that was reason why German Biathlon team said more then month ago already, they will boycott IBU World cup races if this won't be resolved and results will be very clear, not like they are currently. And some 2 or 3 weeks ago, Norwegian xc team said same for their racers, that they won't be racing World cup if this won't be resolved. And biathlon with Germans, and xc without Norwegians is something that just doesn't work, so I'm not really surprised to see this postponement.