Dear Friends, I am planning to make DOC measurements in river water samples using Shimadzu TOC 5000A analyser. One of the basic problems we are facing is storage of samples. Can anybody suggest the standard protocol for storage of river water samples for DOC measurement. Thanks Ravi ************************************************************************** * RAVI BHUSHAN ** Tel(O): 91-79-6302129 Ext:4047 * * OCEANOGRAPHY & CLIMATE STUDIES AREA ** E-mail: [log in to unmask] * * PHYSICAL RESEARCH LABORATORY ** Fax : (91)-(0)79-6301502 * * NAVRANGPURA ** Telex : 0121-6397 * * AHMEDABAD-380 009 ** Tel(R): 91-79-6766546 * * INDIA ** * **************************************************************************