Thank you very much for providing a link to your website. Can you
please offer details on how you measured the stable isotope ratios
of your standard materials? Which laboratories made how many
measurements with which standard deviation? Which international
reference materials were used for normalization? Was two-point
normalization employed? I apologize in advance if your website
offers some or all of this information and I missed it.
Thank you very much!
Mark,You can see our range of standard for isotopes at https://eaconsumables.com/consumables-for-organic-samples/standards-61/isotopic-references.html
Elemental Microanalysis holds ISO 17034 certification for the production of certified reference standards.Scott HughesEA Consumables, Inc.5090 Central Hwy STE 3APennsauken, NJ 08109-4637Toll Free: 855-695-1312 x301Fax: 856-343-0550----------------------- Original Message -----------------------Cc:Date: Wed, 11 Sep 2019 20:08:19 +0000Subject: [ISOGEOCHEM] solid Nitrogen standard for elemental analysis
Can anyone recommend readily available, low % N solid standards for elemental analysis?
Urban Environmental Biogeochemistry Laboratory
Fisher College of Science and Mathematics
-- Arndt Schimmelmann, Ph.D. Senior Scientist Indiana University Dept. Earth and Atmospheric Sciences 1001 East 10th Street Bloomington, IN 47405-1405 Ph (812) 855-7645 e-mail: [log in to unmask] https://earth.indiana.edu/schimmelmann/index.html