As a public university, we will supply reference material as a service to the scientific community rather than as a commercial product. Trial amounts of n-alkane mixtures sealed in glass with sufficient volume for multiple injections are available free of charge within the USA, or for the cost of international shipping. Free trial amounts are also available for acetanilide #1 and some other compounds. To offset our significant investment in pure substances and ongoing analytical effort, we ask for compensation in the amount indicated in the various pdf lists of available compounds.  For example, a 0.5 milliliter aliquot of an n-alkane mixture (solution in hexane) sealed under argon in a glass ampoule at U.S. $250 reflects a price of a few cents per injection after appropriate dilution of our product to match the sensitivity of modern GC-irm-MS systems.
Orders for reference materials should ideally be submitted by e-mail to [email protected].  Ordering may require the exchange of pdf files. Some web browsers have built-in pdf readers that cannot open editable pdf files. Internet Explorer uses Adobe's pdf reader and can open editable pdf files. New customers are encouraged to use the order form in pdf format (  Prior to receiving reference materials, new international prospective customers are required to answer a questionnaire (  The enduser (i.e. the person responsible for the actual use of the reference material) must copy the questionnaire text on his/her institutional letterhead in a way that the official institutional seal, emblem, full name and address are clearly visible on top of the questionnaire. All questions must be answered. ‘Yes’ or ‘no’ boxes must be marked.  The questionnaire must be signed, dated, and returned by mail, fax or pdf. We are prohibited by U.S. law from sending reference materials to certain countries.
Privacy notice: Personal information is required to satisfy U.S. Export Regulations and to ensure proper invoicing by Indiana University. Proprietary information about purchases is stored for 7 years at Indiana University. Due to the rapidly evolving nature of information technologies, no transmission of information over the Internet can be guaranteed to be completely secure. While Indiana University is committed to protecting user privacy, IU cannot guarantee the security of any information users transmit to university sites, and users do so at their own risk. Indiana University is not responsible for the availability, content, or privacy practices of non-university sites. Non-university sites are not bound by this site privacy notice policy and may or may not have their own privacy policies.
Shipments of some reference materials must be declared hazardous material. This requires the use of special, IATA-approved, non-reusable safety cardboard shipping boxes with internal metal or plastic containers (ca. U.S. $15 per container; one container can hold many reference materials). Some countries or regions of countries do not permit the importation or delivery of hazardous materials. International customers are advised to first call their local Federal Express office to inquire about the legality and cost of importing hazardous material.
All FedEx and DHL shipping requires the full street address (no PO box), as well as the name and phone number of the recipient. We prefer that customers make available their institutional Federal Express or DHL account to cover express shipping and customs expenses.  Payment for reference materials is required within 30 days after the receipt of reference materials and invoice.
Our isotope reference materials are research materials offered for use without guarantees and without acceptance of any responsibilities for damages arising from its use or possible failure in any application. It is not sold for profit and is distributed as a service to those engaged in geochemical research. Remedies for any claimed defect in these products will be limited to product replacement or refund of the purchase price. In no event shall Indiana University, Woods Hole Oceanographic Institution, Caltech, Penn State University, or any other collaborating research institution and their staff be liable for any damages, including but not limited to incidental or consequential damages. By accepting shipment of reference materials you agree to this limitation of liability.
For more information please contact Arndt Schimmelmann,  [email protected]
Indiana University
Department of Earth and Atmospheric Sciences
Biogeochemical Laboratories
1001 East 10th Street
Bloomington, IN 47405-1405, USA
Phone: (812) 855-7645
Fax: (812) 855-7899

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