but when 2 NZ students, 14 year old tested the drink in a school science experiment, Ops... it contained almost no trace of vitamin C!!!

Apparently, GSK(lead market for Ribena) did not take the children seriously when they approached them w the result bck in 2004. Eventually, it comes into light after a top-rating New Zealand TV consumer prog broadcast the news.
and what? Elsyne, next time b4 u order Ribena, pls rem it is only water with a lit of purple colouring n blackcurrent. loL
Ps: I hv no idea how to test for Vitamin C, but i do know how to test for starch usin Iodine~the purple result. =)
Pls read ful articles here
http://www.dailytelegraph.com.au/news/nsw-act/no-vitamin-c-in-ribena/story-e6freuzi-1111113233625