Sample Requirements and Price List
Sample Requirements
Field samples (both solid and liquid) should be placed in sturdy containers and labeled with a water-proof marker to indicate the sample identification. If the sample container is glass, this container should be protected from breakage using bubble wrap or another appropriate protector. Field samples should be shipped on ice.
If extraction and purification has already been completed, the sample requiring characterization should be placed in a sturdy container, labeled, and protected from breakage. Samples of this type need not be shipped on ice.
Additional sample quantity requirements are listed below.
Humic Substances Analyses Price List
|
CDPAb Method |
$75.00 |
|
EarthFax Method (Alkaline extraction/purification) |
$125.00 |
| Molecular Weight Fractionation | $350.00 |
Fulvic Acida
|
EarthFax Method without purification |
$100.00 |
|
EarthFax Method with purification |
$125.00 |
|
Molecular Weight Fractionation |
$350.00 |
Humic and Fulvic Acid Functional Group Analyses (requires purified samples)
| Analyte |
Price per Sample ($) |
Comments |
| 1. Total Acidity | $75.00 | Requires minimum 300 mg sample |
| 2. COOH Groups | $75.00 | Requires minimum 300 mg sample |
| 3. Total OH Groups | $150.00 | Requires minimum 600 mg sample |
| 4. Phenolic Groups | $175.00 | Includes analyses 1 and 2 |
| 5. Alcoholic Groups | $200.00 | Includes analyses 1, 2, and 3 |
| 6. Total C=O Groups | $125.00 | Requires minimum 300 mg sample |
| 7. E4/E6 Ration | $25.00 | Requires minimum 300 mg sample |
| 8. IR Spectra (using DRIFTc ) | $250.00 | Requires minimum 150 mg sample |
a Submit > 1gm dry sample and at least 1 L liquid sample.
b California Department of Food and Agriculture
c DRIFT = Diffuse reflectance infrared fourier transform
Call or e-mail for price quotes involving larger sample amounts or special sample or analytical requirements.
