The pricing schedule (Canadian Non-profit or Commercial) is assigned based on the billing address listed on the cover sheet of the submission form and the pricing posted on our website at the time of submission."Canadian Non-profit" is defined as Canadian academic institution, Canadian Government agency, Regsitered Canadian non-profit organization, or Canadian Indigenous Group.Physical and chemical pretreatments vary depending on the type of material and the depositional environment from which it came.It is important to understand the nature of the material being dated as certain organic fractions are more appropriate than others, depending on the environment.Bulk peat samples often contain a silty component and a vegetable component. Please remove visible rootlets prior to shipping and do not ship in aluminum foil as it may degrade. Samples will undergo AAA treatment, unless specified otherwise.Researchers sometimes request to date the humic acid (alkali-soluble) and humin (alkali insoluble) fractions of bulk sediment or peat.
Our chemical pretreatment methods will remove post-depositional carbonates as well as humic acids.If using bulk sediment, be sure to remove rootlets.For bulk samples, some consultation may be needed to determine whether a simple acid wash, AAA method, or compound specific analysis is needed.For the analysis of bone samples, collagen is extracted.Always send clean and dry bone samples as damp samples may contain mould which can cause deterioration of the collagen.Avoid porous (cancellous tissue) or soft bones as these are aslo likely to be low in collagen.