Nofoaga tutotonu o su'esu'ega Citymax Plant Physiology Laboratory 01 Citymax Saina R & D Nofoaga Autu 02 Citymax Plant Physiology Laboratory 03 Puleaina lelei Kjeldahl su'esu'e nitrogen 01 Atomic absorption spectrophotometer 02 Atomic fluorescence spectrophotometer 03 Suavai chromatograph 04 Otometi Potentiometric Titrator 05