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Other Organics

Other Organics


$299 Standard, $374 Expedited
Ceramic residue: Preferred: >30 mg, Minimum: 10 mg, 
Plant-based textiles: Preferred: >40 mg, Minimum: 20 mg, 
Plant-based paper: Preferred: >40 mg, Minimum: 20 mg, 
Synthetics (e.g. resin): Preferred: >50 mg, Minimum: 20 mg, 
Feces, coprolites: Preferred: >50 mg, Minimum: 20 mg, 

$199 Standard, $249 Expedited
Pollen: Preferred: >10 mg, Minimum: 5 mg, 
Pretreated organic: Preferred: >20 mg, Minimum: 10 mg, 

(Please refer to our Bone & Protein page for submissions on leather, parchment, or textiles derived from hair.) Please use our Submission Form to submit your samples. Please contact us with any questions about your submission.


Ceramic Residue

Preferred submission size: >30 mg (with <20% ceramic fraction)
Minimum submission size: 10 mg (with <20% ceramic fraction)

Organic residue submissions are typically charred due to cultural use of cooking in ceramic vessels.  Charred material is typically treated the same, but ceramic residue often includes grains of already baked ceramic temper.  This inorganic material adds significantly to the mass of the sample and further will not contribute to the results obtained from processing the sample.  It is important to exclude or minimize the ceramic fraction when sampling.  Pictured below are highly organic samples with minimized ceramic presence.


Linen textile sample, chemically cleaned material.

Linen textile sample, chemically cleaned material.

Plant-based Textiles and Paper

Preferred submission size: >40 mg
Minimum submission size: 20 mg

Textiles and paper should also be submitted as dry as possible. Extremely fragile artifacts can easily be slipped into a plastic sheath for protection, such as a plastic bag, then shipped to us in a padded envelope.

Ideal submissions should sample from areas with the least 'wear-and-tear,' showing minimized staining and optimizing that new and unvarnished look.  Because of the potential for cultural applicants (e.g. varnish, resins), we need a large enough sample in case of significant mass loss in the chemical pretreatment.

 


Resin collected from a shipwreck.

Resin collected from a shipwreck.

Synthetics (e.g. resin)

Preferred submission size: >50 mg
Minimum submission size: 20 mg

Other organics can include unusual materials, such as synthetic or modified-organic cultural products. These materials may require customized treatment, so it is important you contact us in advance so that we may advise you preferable sampling and submission.


Feces and Coprolites

Preferred submission size: >40 mg
Minimum submission size: 20 mg

Feces is a complex matrix of undigested botanical, digested botanical, digested other(!), sediment, and most likely urine. These fractions must be carefully inspected to determine the ideal material for a radiocarbon date.  Unless the submitter understands those fractions and has separated the preferred material to date, feel free to send our lab the entire sample for careful selection and further consultation.  It is important to package these types of samples with as much protection as possible to avoid crushing, thereby compromising its integrity and sampling potential.


Extraction of pollen with fine organics.

Extraction of pollen with fine organics.

Pollen

Preferred submission size:  >10 mg
Minimum submission size: 5 mg

Because pollen is extracted from other types of samples such as sediment, it is considered an already chemically-cleaned material and can be dried and go straight into combustion.  Pollen is typically received in solution, but can be stored in individual small vials like microcentrifuge tubes secured somehow with cardboard or tape.  The material is easiest to work with when stored in liquid, however.  Our lab can then simply transfer (i.e. pipette) the pollen to a combustion vial and freeze-dry for combustion.