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Analytical Research Laboratory (ARL)


(Please print a copy of your confirmation sheet to send in with your samples. All other guidelines stated below still apply.)

All Samples must be Scheduled with ARL Prior to Delivery

Two copies of your information sheet will be returned to you with your assigned appointment date listed. Keep one copy and return the other with your samples. Please ensure that samples arrive by the appointment date. Samples arriving after their appointment date will be returned to the researcher and will need to be rescheduled before they will be analyzed.

Plan Ahead

It is in your best interest to complete and submit your Sample Analysis Request Forms during the planning stages of your research or teaching project. This ensures prompt analysis and coordination of your appointment date(s). Contacting us after your samples have been collected, extracted, or digested may result in sample analysis delays. If you need to complete a sample set by an imposed deadline, please provide this information in the Requested Processing Date line above.

Typical Turnaround times at the ARL are given below, when samples are received by the lab as solutions and in separate vials for each analysis.

Analysis Results can be expected in (from the date of receipt)
ICP Metals only 10 Days
Nitrate, Ammonium, Ortho Phosphorus 7 Days
Total Phosphorus and TKN 17 Days

  • For certified analysis, the typical turn around times are based on the 'sample holding times' as per the NELAP protocols counting from the time of sampling.

Please provide the ARL with your best estimate of the number of samples you would like to submit. It is best to over-estimate rather than under-estimate on this number. Once a sample set is scheduled, it is easy to decrease the number of samples scheduled while increasing the number requires cancellation of the original appointment date and rescheduling of the samples again leading to delays in analysis. Please DO NOT deliver more samples to the ARL than are indicated on your Sample Analysis Request Form.


The ARL is using direct invoicing of UF/IFAS research account numbers for payment of services. Please expect to budget $2.00 per requested analyte/element, $1.00/extraction/sample and $2.00/digestion/sample. Samples with unusual matrices or other problems may be subject to additional charges. Be sure to provide your sample matrix on this form. Please contact the ARL with any questions concerning unusual matrices or special analyses. Pricing for ARL Services

Choose from the following analyses on solutions

*Nitrate-Nitrite Nitrogen - NOx-N - EPA Method 353.2
*Ammonium-Nitrogen – NH4-N - EPA Method 350.1 (modified)
*Total Kjeldahl Nitrogen - TKN - EPA Method 351.2
*Phosphorus (ppm) - ICP- EPA Method 200.7
*Total Phosphorus (ppb) - EPA Method 365.1
*Ortho-Phosphate (ppb) - EPA Method 365.1
*Total Metals (except Arsenic) - ICP- EPA Method 200.7
Chlorides - EPA Method 325.2
*pH – EPA Method 150.1
*EC – EPA Method 120.1

All of the above analyses may also be performed on soil extracts in addition to the Organic Matter - Walkley-Black and LOI methods.
Services at the UF ARL are offered on a first-come-first-served basis to all researchers.

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