The type of material from which the sample was obtained. For the Hydrocarbon package, samples include types like core, rock trimmings, drill cuttings, piping section, coupon, pigging debris, solid deposit, produced fluid, produced water, injected water, swabs, etc. For the Food Package, samples are usually categorized as food, body products or tissues, or environmental material. This field accepts terms listed under environmental specimen (http://purl.obolibrary.org/obo/GENEPIO_0001246).
- Range: string