An exhaust-based pH reference method, says Eppendorf, can allow biomanufacturers to determine pH offsets for carbonate-buffered systems and to correlate them for process transfers across plants ...

Søren Husted, Jan Kofod Schjoerring, Apoplastic pH and Ammonium Concentration in Leaves of Brassica napus L., Plant Physiology, Vol. 109, No. 4 (Dec., 1995), pp ...

The influence of pH and ammonium-nitrogen on methane production in a high-solids sludge digestion process was investigated using a mesophilic batch digester fed with a sludge cake. A simple model ...