Hanna Instruments HI-83748 Photometer for the determination of Tartaric Acid in wine
The HI-83748 photometer is for the determination of tartaric acid in wine. Hanna’s photometers feature an advanced optical system.
Photometer for the determination of Tartaric Acid in wine; Range 0.0 to 5.0 g/L ppt.
The combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time. The exclusive cuvette locking system ensures that the cuvette is inserted into the measurement cell in the same position every time to maintain a consistent path length.
- Built-in timer: Display of time remaining before a measurement is taken. Ensures that all readings are taken at the appropriate reaction intervals for the test being performed.
- Zero key: A simple press of the zero key on the face of the meter will account for the colour and imperfections in the oil sample before reagent addition.
- GLP: Review of the last calibration date.
- Auto shut-off: Automatic shut-off after 15 minutes of non-use when the meter is in measurement mode. Prevents wastage of batteries in the event the meter is accidentally left on.
- Battery status indicator: Indicates the amount of battery life left.
- Error messages: Messages on display alerting to problems including no cap, high zero, and standard too low.
- Units of measure: Appropriate unit of measure is displayed along with reading
- Supplied with a rigid carrying case
Significance of Tartaric Acid in wine production
Tartaric Acid and tartrate play an important role in the stability of wines. They can be present in wine and juice in various forms, like tartaric acid (H2T), potassium bitartrate (KHT), or calcium tartrate (CaT). The ratio of these depends mainly on the pH of the wine. The percentage of tartrate present as bitartrate (HT-) is maximum at pH 3.7.
The formation of crystalline deposits (tartrate casse) is a phenomenon of wine aging that does not meet customer acceptance. It is therefore important to test for and reduce the potential for bottle precipitation. For example, by adjusting the pH of the wine, winemakers can significantly influence the potential of casse formation.
Tartaric acid concentrations in wine range normally from 1.5 to 4.0 g/L. This acid concentration should not be confused with total or titratable acid of wines, which are often expressed as tartaric acid content as well.
Although it is the tartaric acid that is the predominant acid present (up to 60% of the total acidity), others like malic, citric, and several volatile acids contribute significantly to total acidity.
Specifications
| Range | 0.0 to 5.0 g/L (ppt) |
| Resolution | 0.1 g/L |
| Accuracy @25°C | ±0.1 g/L ±5% of reading |
| Light source | Tungsten lamp |
| Manual precision | SD ±0.1 g/L @ 2.0 g/L |
| Light Detector | Silicon photocell with narrow band interference filter @ 525 nm |
| Method | The reaction between tartaric acid and the reagents causes a yellow/orange red tint in the sample |
| Environment | 0 to 50°C; RH max 95% non-condensing |
| Battery type | 1.5 V AA batteries (4)/12 VDC adapter |
| Auto shut-off | After 15 minutes of non-use |
| Dimensions | 225 x 85 x 80mm |
| Weight | 500g |
| Ordering information | Supplied with sample cuvettes and caps x 2, reagents for 5 manual tests (HI-83748A-0 and HI-83748B-0), 200µL automatic pipette, plastic tips for 200µL automatic pipette x 2, 5mL syringe with tip, cuvette wiping cloth, 12 VDC adapter, batteries, instructions, instrument quality certificate and rigid carrying case. |
| Reagent Set | HI-83748-20 Tartaric acid reagents set for wine (20 tests) |
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.