02 9543 7377


AlcoTest is Multi-Purpose Tool for the Distillery Lab

The AlcoTest-RI from Rudolph Research is many tools in one. Almost all the testing needed for a busy and productive distillery can be done with the Alco-Test-RI. Your goals as a distiller are to produce consistent tasting, high quality, alcohol beverages that are compliance with the TTB and it labeling requirements

Product Category: Alcohol testing

Industry: Distilleries, Food, Dairy and Wine

Supplier: Rudolph Research Analytical


AlcoTest is Multi-Purpose Tool for the Distillery Lab

The AlcoTest-RI from Rudolph Research is many tools in one. Almost all the testing needed for a busy and productive distillery can be done with the Alco-Test-RI. Your goals as a distiller are to produce consistent tasting, high quality, alcohol beverages that are compliance with the TTB and it labeling requirements

The AlcoTest-RITM Allows Alcoholic Beverage Producers To Lock In Quality With Additional Benefits

Measure RI, BRIX, Specific Gravity and Density of incoming flavors and additives. When making flavored alcohol product sugars, flavors and colors are added to ethanol and water to create a finished beverage.

Adding the same volume of the various components to each production run would have you believe your product is consistent and in specification but what if the flavorings themselves are out of specification? The AlcoTest-RITM allows you to measure key flavor quality indicators such as density, refractive index, and BRIX. This can be done when the materials are delivered so you can monitor your suppliers for quality and keep your finished product tasting exactly the same from batch to batch.

AlcoTest-RITM can also measure Corrected BRIX which is the actual BRIX corrected for obscuration caused by the alcohol. Refractometers by themselves cannot measure BRIX accurately when alcohol is present. The measurement must be corrected to give you the actual BRIX measurement – thus the term “Corrected BRIX”. Using AlcoTest-RITM as a final test of your finished beverage gives you a Corrected BRIX value which is an excellent benchmark of residual sugars. Maintaining a stable Corrected BRIX value ensures your product’s taste is consistent from batch to batch.

For most spirit blending and production operations, simply load a sample and receive % ABV in less than 3 minutes. Even obscured samples are easy to measure while blending down to label value, saving you hours of time each month on time consuming lab distillations. Using both density and refractive index measurements the AlcoTest-RITM can calculate % ABV accurately even with the presence of flavorings, colorings, additives and barrel aging. If you maintain tight formulas for your products, the need for lab distillations is greatly reduced.

As a producer of Wine and obscured alcoholic beverages it is your goal to choose the most accurate, least time intrusive solution to measure these samples without distillation.

Lab distillations are required by taxation bureaus as a means to measure the percentage of alcohol in a given alcohol beverage. Simple alcohol and water mixtures are very easy to read in a density meter alone as the Density Meter knows the density of water and ethanol so with some internal calculations, the percentage of alcohol can be determined. When other elements are present in an alcohol solution such as flavorings, heavy barrel aging or sugars, the percent alcohol in the water is masked or obscured by the added elements. Scientists discovered that by distilling the alcohol solution they could vaporize and recollect just the alcohol, add back the missing volume of water, and now the percentage of alcohol can be determined. Is distillation perfect? No, but it is a fairly reliable way of separating alcohol from a solution and for governments to have a means to collect tax.

Many government taxation bureaus require alcohol beverages that are not just alcohol and water to be distilled. You may go one step further and say “Or use another known more accurate method”. Thus, distillation is often the default standard, but methods such as Gas Chromatography may also be used, as this is a known more accurate method.





Alcohol Proof Measurement – Testimonial Palmetto Moonshine
Alcohol Proof Measurement – Testimonial Palmetto Moonshine
Testimonial Palmetto Moonshine

March 26, 2015

Attn: Mike Pierpont
Rudolph Research Analytical Manager, Densitometry
55 Newburgh Road
Hackettstown, NJ 07840


Palmetto moonshine began needing a consistent method to monitor and record our

alcohol based products for our consumers and to the strict requirements of the Tobacco Tax and Trade Bureau (TTB). There are many different methods that one could monitor and record the exact proof of their products but only a few methods approved to be used by the TTB that provides the definitive results of the findings such as the DDM2911 Plus (Density Meter).
I began asking friends and business associates within the industry about these various types of methods and concepts and which companies supplied the best equipment, best value, and best service. We researched online, spoke on the phone, read interviews of customers and then met with the reps of these different companies. After several months Palmetto Moonshine realized that there seemed to be only one provider that met those requirements. Rudolph Research.
From our first email requesting general information about Rudolph Research products, Mike was very responsive and extremely knowledgeable about not only the products that Rudolph research sold but the industry itself. During the time of trial testing of the equipment to the final visit 30 days after the installation to ensure the machine was still suiting our needs, our distillery staff learned a lot about the customers and experiences of Mike that spanned the globe from micro distilleries to NASA. I was not only impressed by his experience but the equipment of Rudolph Research offered.
As a young micro distillery that experienced fast exceptional growth, we needed a reasonable financial solution for our testing needs. Rudolph Research user friendly interface, price point, equipment size and utility of use coupled with the education and knowledge of Mike made our decision a no brainer of what was best for us. Palmetto Moonshine is proud to use and promote the density meter to our industry colleagues and will be more than happy to answer any direct question from any future customers of Rudolph Research.

Palmetto Moonshine Owner
Brian P. Boggs


200 West Benson St. Anderson, SC 29624
Phone (864) 226-9917 • Fax (864) 226-1097 •

Density Meter Testimonial – Painted Stave Distillery
Density Meter Testimonial – Painted Stave Distillery
Mike Pierpont June 26, 2014
Manager, Densitometry
Rudolph Research Analytical
55 Newburgh Road,
Hackettstown, NJ, 07840

Hi Mike!
Thank you for the excellent service you’ve provided throughout ordering, installing and updating our DDM2911 Plus (Density Meter). As you know, we primarily employ the DDM2911 Plus to proof the spirits we craft in our distillery. In our industry, our governing body, the TTB, requires 0.02% Ethanol accuracy for testing of % Ethanol in wine, beer, and spirits for the purposes of taxation and labeling. For several months we tested the DDM2911 Plus, side by side, against the (Competitor). In the end, we found the performance of the DDM2911 Plus to be superior in a number of categories, and in the end, its accuracy, repeatability, and intuitive user interface sold us. We have, and will continue to recommend Rudolph’s DDM2911 Plus to other members in our industry. It is an outstanding instrument that comes with outstanding technical support. Thank you again for your help and ongoing support. We certainly enjoy your visits and look forward to the next time you pass through.

Ronald R. Gomes, Jr., Ph.D.

CEO Legacy Distilling, LLC dba Painted Stave Distilling
106 W Commerce St.
Smyrna, DE 19977

Painted Stave Distilling

Scientific Solutions

Scientific Solutions have been providing carefully selected laboratory and analytical equipment to Australian Industries such as Environmental, Pharmaceutical, Food and Beverage and Research markets of the Science Industry for over a decade.

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