Dear all: We need containers for sampling and storage of CO2 gas for isotopic measurement. It will take a couple of days to bring the gas samplers from our site and undertake the isotopic measurement. Does anyone have comments about the materials of the gas samplers, and about the procedure for gas sampling? Previously, topic on materials of stopcocks is discussed on this mailing list. Then we would like to know if this effect is detectable in carbon isotopic measurements of CO2 gas (several hundred ppm) stored for a week. Any comments are welcomed. Thanks in advance. Keisuke *********************************** In Japanese ***************** $BLZDm7<2p!J$3$P$1$$$9$1!K (J $B5~ETBg3XBg3X1! (J $B>pJs3X8&5f2J (J $B<R2q>pJs3X@l96 (J $B@8J*7w>pJs3X9V:B (J $B@8J*4D6->pJs3XJ,Ln (J $B=u<j (J [log in to unmask] 606-8501 $B5~ET;T:85~6h5HEDK\D.!!!!!!!! (J Tel 075-753-3132 $B!! (JFax 075-753-3133 Office $B9)3XIt#29f4[ (J404A http://rfecol.kais.kyoto-u.ac.jp/KOBA/welcome.htm ***************************************************************** Keisuke Koba (Assistant professor) Environmental informatics, Biosphere Informatics Department of Social Informatics, Graduate School of Informatics, Kyoto University 606-8501, Japan. Tel +81-75-753-3132 Fax +81-75-753-3133 [log in to unmask] (temporal) http://rfecol.kais.kyoto-u.ac.jp/KOBA/kobaeng.html ***************************************************************** 11/26 $BH|GJ8PGnJ*4[ (J 27 $BL$Mh3+Bs2q5D!\FCJL9V1i (J 30 $B=PD%!JEl5~9)6HBg3X!! (J045-924-5506 $B!K (J 12/3-4 $B%"%s%1!<%HD4::!J;0>r!";M>r!K (J