pH measurements of whole and sub-fractionated (< 1000 Da) white tea alone and with added 4.8 mM copper (II) sulphate. (Cu = 4.8 mM copper (II) sulphate, WT = whole white tea, '+' = combination of agents specified, WTF = white tea sub-fraction < 1000 Da. Bars show SEMs).
Holloway et al. BMC Complementary and Alternative Medicine 2011 11:115 doi:10.1186/1472-6882-11-115