The Buyer is engaged in a research project requiring the isolation, purification, and chemical analysis of n-alkanes from archaeological sediment samples. The Supplier shall receive the total lipid extracts (TLE) from the Buyer, perform lipid fractionation to isolate the apolar hydrocarbon (n-alkane) fraction, conduct additional purification as needed, and carry out quantitative and isotopic analysis using gas chromatography (GC-FID, GC-MS, or GC-IRMS). The Supplier will deliver a complete data set package, including quantified concentrations, chromatograms, method documentation, and a detailed method report in English. The contract includes a pilot phase and full sample processing, with all deliverables provided within agreed timeline.