Service Fee Schedule

Below is a list of analytical services and prices effective Jan, 1, 2024. Download a fee schedule PDF. Additional services may be available by request. Contact the lab for more information.

I. Lab (“bench”) fees

Daily Fee Weekly Fee Monthly Fee
Researcher (includes STRI staff, Research Associates, and non-fellows registered at STRI) $8 $40 $160
Postdoctoral Fellow $5 $25 $100
STRI Fellow (STF, predoc) No bench fee

II. Water chemistry

Analyte Procedure Cost per sample
Ammonium1 Flow-injection analyzer $8.00
Nitrate + Nitrite1 Flow-injection analyzer $8.00
Phosphate1 Flow-injection analyzer $8.00
Silicate1 Flow-injection analyzer $9.00
DOC and / or TDN2 TOC-TN analyzer $15.00
Total dissolved phosphorus Wet oxidation/FIA $12.00
TDN + TDP Oxidation/FIA $15.00
Cations3 ICP-OES $18.00
Chloride Flow-injection analyzer $9.00
Sulfate Flow-injection analyzer $9.00
Water Isotopes (δ2H, δ18O) CRD Spectroscopy $14.00
Filtration of water samples 0.7µm GF/F $2.00

1 Base price, add $2 for each additional FIA analysis (e.g. NO3, PO4, NH4, Si).
2 Dissolved organic carbon and / or total dissolved nitrogen.
3 Includes Ca, K, Mg, Na, Si; add $1.00 per sample for each additional element.

III. Total element analysis in soil, sediment, or plant tissue

Analyte Procedure Cost per sample
Total carbon and/or total nitrogen Combustion CHN analyzer $10.00
Total phosphorus in plant tissue Ignition/acid extraction/FIA $17.00
Total phosphorus in soil (includes LOI) Ignition/acid extraction/FIA $20.00
Total mineral elements1 Nitric acid digestion/ICP-OES $28.00
Total organic carbon Acidification and dry combustion $15.00
δ13C, δ15N isotopes Isotope Ratio Mass Spectrometer $15.00
δ34S isotopes Isotope Ratio Mass Spectrometer $18.00
Carbonate isotopes (δ13C, δ18O) Headspace gas analysis $18.00
Sample weighing/folding fee $1.00

1 Includes Al, Ca, Cu, Fe, K, Mg, Mn, Na, P, Zn; add $1 for each additional element.

IV. Soil or sediment extraction and analysis

Analyte Matrix Procedure Cost per sample
Analysis only Analysis with extraction
Ammonium KCl/K2SO4 Flow-injection analyzer $9.00 $15.00
Nitrate KCl/K2SO4 Flow-injection analyzer $9.00 $15.00
Phosphate Bray/Olsen/Mehlich Flow-injection analyzer $9.00 $15.00
Ammonium + nitrate KCl/K2SO4 Flow-injection analyzer $11.00 $17.00
Resin P Anion-exchange membrane Flow-injection analyzer $10.00 $16.00
Mehlich phosphorus Mehlich-III ICP-OES $15.00 $21.00
DOC and / or TDN KCl/K2SO4 TOC-TN $15.00 $21.00
TDP Bicarbonate, etc. Oxidation1/FIA $12.00 $18.00
TDN + TDP Water extract/soil solution Oxidation1/FIA $15.00 $21.00
Cations/CEC2 BaCl2 ICP-OES $18.00 $24.00
Nutrients3 Mehlich-III ICP-OES $18.00 $24.00
Chloride Water Flow-injection analyzer $9.00 $15.00
Sulfate Water Flow-injection analyzer $9.00 $15.00
Amorphous metals4 Oxalate extraction ICP-OES $18.00 $24.00
Total organic phosphorus NaOH-EDTA ICP and FIA5 $23.00 $29.00
Microbial C / Microbial N K2SO4 Fumigation/TOC-TN $32.00 $44.00
Microbial P (includes resin P) Anion-exchange membrane Fumigation/FIA $20.00 $32.00

1 Persulfate oxidation.
2 Includes effective cation exchange capacity, total exchangeable bases, and base saturation.
3 Includes Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, P, S, Si, and Zn.
4 Includes Al, Fe, Mn, P, and Si.
5 Total P by ICP spectrometry and phosphate by FIA colorimetry.

V. Sample preparation

Procedure Sample type Cost per sample
Drying Plant/soil $2.00
Drying (with moisture content) Soil / Sediment $5.00
Sieving Soil / Sediment $3.00
Grinding (ball or Wiley mill) Soil / Sediment $4.00
Crushing for high clay soils Soil / Sediment $5.00

VI. Miscellaneous analyses

Procedure Sample type Cost per sample
Soil pH (in water, KCl, or CaCl2) Soil / sediment $5.00
Carbonate (acid treatment) Soil / Sediment $3.00
Loss on ignition Soil / sediment / Plant tissue $8.00
Texture (sand, silt, clay) Manual $15.00
Texture (sand, silt, clay) Laser Particle Size Analyzer $10.00