PH REX is a specific mixture of substances with buffering and alkalizing action: the first are able to block the descent of rumen pH, while the second have the characteristic of elevating their values (Shaver et al., Dietary buffers for Dairy Cattle).

The study of the composition, as well as the granulometry and solubility of the various components, guarantees full functionality already from the first minutes after ingestion and for all the following 24 hours.