Back to Ecosystems Center Stable Isotope Laboratory Overview Our Equipment Sample Requirements Services & Charges Shipping & Turnaround Home Groundbreaking Research at the MBL Research Centers The Ecosystems Center Stable Isotope Laboratory Services & Charges *Total N, %N, Total C, %C, Total S, %S provided upon request at no extra charge. Solid Materials Analytical Services SAMPLE TYPE ISOTOPE* CHARGE PER SAMPLE Bulk Organic Matter δ15N δ13C δ15N & δ13C δ34S $ 10.00 $ 10.00 $ 15.00 $ 20.00 Sample Requirements NH4 & NO3 Salts δ15N $ 10.00 Particulates Filters δ15N δ13C δ15N & δ13C δ4S $ 15.00 $ 15.00 $ 20.00 $ 20.00 Sample Requirements NH4 Diffusion Filters δ15N $ 10.00 Sample Requirements Solid Materials Preparation Services SERVICE CHARGE PER SAMPLE Drying & Grinding $ 10.00 Acid Treatment $ 10.00 Sample Weighing & Packing $ 3.50 Derivatized Organics Please contact us.