KERN analog refractometer ORA-W (wine)

Beschreibung

KERN analog refractometers ORA-W (wine)

KERN ORA-W analog refractometers (wine) offer a highly precise way of determining sugar and alcohol content in wine and fruit cultivation. They are particularly suitable for users who require fast and reliable measurement in everyday use. Compared to similar products, this series impresses with its universal application options and robust design. Similarly equipped products such as the KERN analog refractometer ORA-H can be used in other areas and also offer maintenance-free handling.

Performance features and possible applications

The analog handheld refractometers in this series are designed for wine, must and other alcoholic beverages. They can be used to measure the degree of ripeness of grapes, berries or other fruits by determining the Brix value. In addition, the expected alcohol content can be estimated. This is an ideal handheld measuring device for anyone involved in fruit growing, winemaking or the production of cider and spirits in the agricultural sector.

Another advantage is the various selectable scales, which display several values without the need for conversion. This allows Brix, Oechsle and KMW (Klosterneuburger Mostwaage) to be recorded precisely and, above all, without errors. The automatic temperature compensation (ATC), for example on the ORA 1WA, ORA 3WA or ORA 7WA models, supports the accuracy of the measurement under varying ambient conditions.

Similar to the KERN ORA-B analog refractometers, the ORA-W series also ensures high measurement precision, as the optical system including the prism cover is made of high-quality, low-tolerance materials. This combination allows long-term, reliable measurements without extensive maintenance.

Important technical details

– Measuring range depending on model:
– Brix: 0-32 %
– Oechsle: 0-140 °Oe or 30-140 °Oe
– KMW (Babo): 0-25 °KMW
– Other variants (percent by volume, percent by mass) also available

– Fine gradation (graduation):
– 0.2 % Brix
– 1 °Oe
– 0.25 °KMW
– Different graduations depending on the model (e.g. 1% (v/v) or 2.5% (w/w) for percentages by volume or mass)

– Models with ATC (automatic temperature compensation)
– Marking „yes“ in the model name
– Measuring accuracy at an ambient temperature of 10 °C to 30 °C

– Optical precision:
– High-quality lenses and scratch-resistant prism cover
– Exact reading due to clear, fine scale lines

– Scope of delivery:
– Refractometer in storage box
– Calibration solution, pipette, screwdriver
– Cleaning cloth

Depending on the model (e.g. ORA 1WB, ORA 1WA, ORA 3WB, ORA 3WA), the focus is on different measuring scales. Users who only require Brix and Oechsle, for example, will find the basic models without ATC a cost-effective solution. Those who often measure at changing ambient temperatures should consider a model with ATC such as the ORA 1WA.

Certifications and standards

Kern & Sohn products are generally CE-compliant and meet the usual industry standards. In combination with the high measuring accuracy and precise processing, professional applications in laboratories and agriculture can be ensured.

Concrete application examples

– Determining the degree of ripeness of grapes for wine production in order to determine the optimum time for harvesting
– Checking the fruit sugar in berries or other fruit to accurately estimate the subsequent alcohol content
– Use in the orchard to guarantee consistent quality for different varieties (e.g. soft fruit, pome fruit).
– Support in the production of must, cider and similar alcoholic beverages to specifically regulate sugar content

For example, those who produce highly concentrated fruit juices can also monitor the density or Brix value. This is relevant in order to control the taste, sweetness and shelf life.

FAQs

How do I calibrate the refractometer

?

– Put a few drops of the calibration solution supplied on the prism.
– Close the cover and use the screwdriver to adjust the device so that the display matches the value of the calibration solution.

What does ATC mean and when is it useful?

ATC stands for automatic temperature compensation. This means that measurements are accurate even when ambient temperatures fluctuate greatly. Anyone measuring outdoors or in warm and cool rooms will benefit considerably from this function.

Can the device also be used for liqueurs or spirits?

Yes, the ORA series offers models such as the ORA 1AB (percent by volume) or ORA 2AB (percent by mass), which are particularly suitable for high-proof alcohol measurements. However, the appropriate model should be selected for wine, must and juices.

How do I proceed with cleaning?

The prism and the housing can be cleaned using the cleaning cloth provided and clean water. Take care not to scratch the prism and do not use any aggressive chemicals.

Conclusion

The series presented here offers a reliable method for determining the sugar content, potential alcohol content and degree of ripeness in wine and fruit. With a variety of measuring scales, robust materials and an optional ATC function, the analog handheld refractometers are extremely flexible and offer maximum utility for professionals in agriculture, viticulture and food production. The device is characterized by its durability and uncomplicated handling, making it a central tool in any professional process chain.

°Oe:Oechsle degrees
°KMW:Klosterneuburg must scale

Models with “ATC“ have an automatic temperature compensation which,
exact measurements at different ambient temperatures (10 °C / 30 °C).