The GWI Service Laboratory at the University of Missouri analyzes grape juice, wine, and cider samples to support the production of high-quality products across the state. Customers have access to analytical data as well as consulting through the extension mission of the Grape and Wine Institute.
Instructions for sample submission
- Please fill out the sample submission form (PDF) and include a printed copy with your samples.
- If you are personally delivering your samples, please use one of the 30-minute parking spots on the west side of Eckles Hall or a visitor spot in AV12 (see Service Lab parking map). Please make parking arrangements if your visit to GWI is expected to exceed the 30-minute limit. The GWI Service Lab is located in 135 Eckles Hall. Follow the wayfinding signs in the building.
- If you are shipping your samples, please use well-sealed plastic containers with plenty of cushioning material and select overnight delivery. The shipping address is:
GWI Service Lab
Attn. Connie Liu
135 Eckles Hall
Columbia, MO 65211
The results will be sent to you via email usually within 24 to 48 hours using the email address you provide on the sample submission form.
Invoices will be sent by email and can be paid by check only until further notice.
Pricing information
Individual tests for single attributes:
| Attribute | Method | Accuracy | Price per sample |
|---|---|---|---|
| Absorbance | Single wavelength | High | $5 |
| Multiple wavelengths | High | $8 | |
| Acetic acid (VA) | FT-MIR | Medium | $5 |
| Distillation | Medium-High | $15 | |
| UPLC | High | $20 | |
| Enzymatic | High | $16 | |
| Alcohol | FT-MIR | Medium | $5 |
| Ebulliometry | Medium | $12 | |
| Brix | FT-MIR | Medium | $5 |
| Refractometry | High | $7 | |
| Citric acid | FT-MIR | Medium | $5 |
| UPLC | High | $20 | |
| Enzymatic | High | $16 | |
| Glucose + Fructose | FT-MIR | Medium | $5 |
| Enzymatic | High | $16 | |
| Lactic Acid | FT-MIR | Medium | $5 |
| UPLC | High | $20 | |
| Enzymatic | High | $16 | |
| Malic acid | FT-MIR | Medium | $5 |
| UPLC | High | $20 | |
| Enzymatic | High | $16 | |
| pH | FT-MIR | Medium | $5 |
| pH meter | High | $7 | |
| Stability | Cold stability | Medium | $10 |
| Heat stability | Medium | $10 | |
| Fining trial | Medium | $15 | |
| Sulfur dioxide (SO2) | FT-MIR | Medium | $10 |
| Titration (A-O) | Medium | $20 | |
| Titration (Ripper) | Medium | $15 | |
| Tartaric acid | FT-MIR | Medium | $5 |
| UPLC | High | $20 | |
| Colorimetric | High | $16 | |
| Titratable acidity (TA) | FT-MIR | Medium | $5 |
| Titration | High | $15 | |
| Total polyphenols | Folin C | High | $16 |
| Total tannins | MCP assay | High | $16 |
| Yeast Assimilable Nitrogen (YAN) | FT-MIR | Medium | $5 |
| Spectrophotometry | High | $20 |
Grouped tests — common combination of tests bundled for discount:
| Name | Panel | Method | Accuracy | Price per sample |
|---|---|---|---|---|
| Acid Spectrum | Acetic acid, Citric acid, Lactic acid, Malic acid, Tartaric acid | FT-MIR | Medium | $10 |
| UPLC | High | $60 | ||
| Anthocyanin Spectrum | Anthocyanin spectrum | HPLC | High | $70 |
| Aroma Spectrum | Aroma compounds | GC | High | $70 |
| Juice Panel 1 | Brix, pH, TA | FT-MIR | Medium | $8 |
| Reference methods | High | $20 | ||
| Juice Panel 2 | Brix, pH, TA, Malic acid, YAN | FT-MIR | Medium | $12 |
| Reference methods | High | $28 | ||
| Polyphenol Spectrum | Total polyphenols, Iron Reactive Phenolics, Total tannins | Spectrophotometry | High | $50 |
| Wine Panel 1 | Alcohol, pH, TA, SO2 | FT-MIR | Medium | $12 |
| Reference methods | High | $28 | ||
| Wine Panel 2 | Alcohol, pH, TA, VA, SO2 | FT-MIR | Medium | $15 |
| Reference methods | High | $30 | ||
| Wine Panel 3 | Alcohol, Sugars, pH, TA, Malic acid, Tartaric acid, VA, SO2 | FT-MIR | Medium | $18 |
| Reference methods | High | $35 |
Contact
If you would like to request analytical services that are not listed above or if you have any other questions, please contact our laboratory manager Connie Liu.
Email: liugw@missouri.edu
Phone: 573-882-4972