The weighing systems have to be 0.1% accurate. But the
resolution of 7135 is +/- 20,000 counts. People make
that 40,000 counts. Other system components are responsible
to make 0.1% accuracy - precision- possible and be certified
as such. So biting of of 1-2 clock counts in 20,000 may not
matter. Also if biting is consistent then can be adjusted
in code.
There are so many persons making these systems and some
of them might have noticed this. High end systems do use
chopper stabilised OPAMPs and now everybody is switching to
+/- 60,000 counts ADC from Microchip which is at same cost
as 7135.
Hope that this is practical way of view. I am not contesting
any claim about biting.
psd