Contact Us

Use the form on the right to contact us.

We will be happy to answer any questions you have. Please send us a message and one of our expert staff members will get back to you shortly!

4254818122

Wood, Plant, & Cellulose

Wood, Plant, & Cellulose

Wood samples may be submitted for Macrobotanical Identification.


$299 Standard, $374 Expedited
Wood and plant: Preferred: >40 mg, Minimum: 20 mg

$199 Standard, $249 Expedited
Pretreated wood and plant: Preferred: >20 mg, Minimum: 10 mg

$329 Standard, $411 Expedited
Wood for cellulose extraction: Preferred: >80 mg, Minimum: 40 mg

Please use our Submission Form to submit your samples. Please contact us with any questions about your submission.


Wood   

Preferred submission: 40 mg
Minimum submission size: 20 mg

Wood samples undergo a chemical pretreatment protocol to remove adsorbed carbon compounds, such as humic acids, that may alter the apparent age.

When clean and well-preserved, wood should appear the natural color of its species, such as light brown, dark brown, or reddish brown. There should be clear striations to indicate growth layers.  Ideal submissions include bark, twigs, seeds, or at least the most apparent outermost growth layer in order to represent the most recent growth of the wood, or the shortest lifespan.

Sample Selection & Submission Recommendationds

Choosing the most appropriate sample for submission is vital to the success of analysis.

  • Select the youngest material available: twigs, cone scales, herbaceous stems, seeds, leaves, pine needles, bark, or closely-spaced outer growth rings.
  • Select the best-preserved pieces. Clean, well-preserved wood retains the natural color of its species.
  • If the only available material is degraded, submit as large a sample as possible. Common degradations include:
    • Partially burned wood, driftwood, and dry-rotted wood
    • Areas of visible mold or lichen growth
    • Partial mineralization
  • Remove obvious contaminants: rootlets, mold, insects, and epiphytes.
  • Rinse and/or scrape away adhered soil.
  • Dry completely.
  • Package and ship samples according to our general recommendations.

Plant

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

Plant samples undergo a chemical pretreatment protocol to remove adsorbed carbon compounds, such as humic acids, that may alter the apparent age.

Sample Selection & Submission Recommendations

Choosing the most appropriate sample for submission is vital to the success of analysis.

  • Select the most robust material available (e.g. stems, rather than leaves).
  • Select the best-preserved pieces.
  • Remove or avoid obvious contaminants: intrusive rootlets, insect parts, grease from handling, tobacco smoke, spills and stains, and synthetic resins.
  • Rinse and/or scrape away adhered soil.
  • Dry completely.
  • Package and ship samples according to our general recommendations.

wood_ideal.jpg

Pretreated wood and plant

Preferred submission size:  20 mg
Minimum submission size:  10 mg 

"Pretreated" material has been chemically treated prior to submission to DirectAMS, such as extracted cellulose and dry, acid-base-acid treated organic matter. Please provide a brief summary of the protocol applied in the Comments section on the Submission Form.  

Package and ship samples according to our general recommendations.


Wood for Cellulose Extraction

Preferred submission size:  >80 mg
Minimum submission size:  40 mg 

Cellulose Extraction chemically isolates various fractions of a wood sample (e.g. alpha-cellulose and holo-cellulose). This pretreatment protocol may be beneficial in avoiding the influence of inter-ring contamination, although in most contexts there is little evidence of statistically significant age differences between cellulose isolates and the whole wood.

Sample Selection & Submission Recommendations

Choosing the most appropriate sample for submission is vital to the success of analysis. Please contact us to let us guide you on the submission.

  • Cellulose represents only a fraction of a wood sample; thus, a large quantity of material is required. It is best to provide as much material as possible. 
  • Select the youngest material available: closely spaced outer growth rings.
  • Select the best-preserved pieces. Clean, well-preserved wood retains the natural color of its species.
  • If the only available material is degraded,m submit as large a sample as possible. Common degredations include:
    • Partially burned wood, driftwood, and dry-rotted wood
    • Areas of visible mold or lichen growth
    • Partial mineralization
  • Remove obvious contaminants: rootlets, mold, insects, and epiphytes.
  • Rinse or scrape away adhered soil.
  • Dry completely.
  • Package and ship samples according to our general recommendations.