Available CRM
Both low carbon water (1-2 µM DOC) and deep Sargasso Sea/Florida Straight water (44-46 µM DOC) are available in 10 mL ampoules. They are already acidified with hydrochloric acid and tested to be stable for at least one year. They should be stored in the dark at room temperature. These waters have been tested for DOC concentrations by the laboratories of Drs. Jim Bauer, Ron Benner, Yngve Borsheim, Gus Cauwet, Craig Carlson, Bob Chen, Dennis Hansell, Chuck Hopkinson, Ken Mopper/Jianguo Qian, Hiroshi Ogawa and Jonathan Sharp. The consensus values of DOC and TN for each DSR batches can be found in Table 1.

CRM Use
The CRM's should be used when you wish to reference your results against the international community of DOC analysts. We have several thousand ampoules of each CRM available, so we encourage their use on each analytical day. More ampoules will be prepared for distribution as needed. The good news is more and more DOC labs around the world are using DOC CRMs since this project started in 1999. By the end of 2005, 605 boxes of CRM ampoules were sent to 150 DOC labs in 26 countries. For the CRM usage profiles, please refer to Table 2.  

FUNDING
The cost of developing and maintaining the DOC-CRM program has been borne by the US National Science Foundation . The program is currently slated to run into the year 2009. Subsequent funding will be contingent on the success of the program, as demonstrated by the DOC community's commitment to the use of CRM's. If we use them effectively, the program may continue. If we elect to not use them, the service will end.

COST & SHIPPING
The DOC CRM ampules are no longer free to the users as NSF cut its funding to the program.  The cost per box (144 ampules) is $100 for DSR and $50 for LCW  plus that of shipping.  To request CRM's, please provide your name, number of ampoules required of each CRM (minimum of 72 ampoules of LCW and DSW), your shipping address, telephone number and a means of covering the cost. We will ship most samples via Federal Express. If your institute has a Federal Express or other courier account number, please send that to us and we will ship immediately. If your institute does not have a Federal Express account, you can either pay by credit card or you will need to send a banker's draft or international money order in the sum of the cost of the ampules and that of shipping to:

DOC-CRM
University of Miami
RSMAS/MAC
4600 Rickenbacker Causeway
Miami, FL 33149
We will ship the CRM's to you upon receipt of this payment.
Please contact Dr. Wenhao Chen for more informations or to place orders.

LINKS

High Temperature Catalytic Oxidation DOC measurement: HTCO website

CONTACT: 
Dr. Wenhao Chen 
Program Manager
University of Miami
RSMAS/MAC
4600 Rickenbacker Causeway
Miami, FL 33149
wenchen@rsmas.miami.edu
Tel: (305) 421-4727