Response to RoHS Exemption Application No 2013-5 http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=0CEYQFjAF&url=http%3A%2F%2Frohs.exemptions.oeko.info%2Ffileadmin%2Fuser_upload%2FRoHS_IX%2FRequest_2013-5%2F20131106_Nonoco_Dow_Contribution_Ex_2013-5_Response_to_RoHS_Questionnaire.pdf&ei=NiTVVKPWBMLFggTzzoKQCg&usg=AFQjCNFz4x9A63vnO3IHJPox1OEKyq8KwQ&sig2=K3IXaAxlkuHBagJcAe6HhQ ....may help some w/why RG QDs Methods for the determination of photoluminescence quantum yield An overview of the methods used by Nanoco Technologies for the determination of luminescence quantum yields of quantum dots http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCMQFjAA&url=http%3A%2F%2Fwww.nanocotechnologies.com%2Fsites%2Fdefault%2Ffiles%2Fattachments%2Fpdf%2FNanoco%252BTech%252BWhite%252BPaper%252BPLQY.pdf&ei=NiTVVKPWBMLFggTzzoKQCg&usg=AFQjCNHjsy9CZm1HgTZ88Erzm5BC-jWb7Q&sig2=eCOMcENNDYMsVpetOL4S2w .....the plus minus numbers made me smile search pg https://www.google.com/?gws_rd=ssl#q=nanoco+green+quantum+dots+yield Looking Forward