What is the point of these "24 bit" parts ? Best case is usually only about 16-17 bits of precision
The point is that many makes resolution equal to precision. If you make e.g. a 100kg scale that show a resolution of 0.1g you can fool the poor sod that buy your product into thinking he get 0.1g precision. Worst of all, often even the designer believes he has that precision because even the designer did not get the difference between resolution and precision. Now, there is a SLIGHT advantage of an A/D with a resolution that exceed your precision and that is that you can gain about 1/2 LSB of a 16 bit A/d by replacing it with a higher resolution A/D simply because you will get much better averaging.

In my opinion there would be no 24 bit A/Ds in thye 'economy' market if resolution was never equated with precision. I, could probably find someone that could design 24 bit presision, but such a scale would cost 10.000s of dollars because of a) very expensive components and b) as lot of compensation stuff and c) would cost a fortune to develop d) would need monthly recalibration.

I just had a look at the sartorius website and even they say NOTHING about precision, but state resolution!

Erik