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ANALYSIS OF BEER BY WAY OF FULLY AUTOMATED STEAM DISTILLATION
(reference method), WITH PC PROGRAM
BEERDIST 2 : for the precise determination of
the densitiy, the original gravity, the alcoholic strength, the extract and the degree of fermentation of beer -
without any need to use an additional thermostat. Measurement is quick, simple, cost-effective and extremely accurate.
Principle of Analysis
First of all, an ultrahigh-precision hydrometer is employed to determine the density of a sample of decarbonated beer in a special glass cylinder that is suspended in a cardanic stand equipped with a magnifying glass. Next, the alcohol contained in 100 ml of that decarbonated beer is distilled over into a calibrated distillation recipient, where the original volume of the sample liquid is restored by diluting the distillate with distilled water. It is ensured by the configuration of the system ("natural thermostat") that the temperature of the diluted distillate is identical to that of the original sample liquid, which is indispendable to accurate measurement, as this also ensures that the alcoholic strength of the diluted distillate is identical to that of the original beer sample. Direct readings of that alcoholic strength are now taken in the afore-mentioned hydrometer measuring system by means of an ultrahigh-precision hydrometer.
Extract and original gravity are determined by way of computer-assisted calculations that are performed on the basis of the formula by Taberié and Balling (cf. "Brautechnische Analysenmethoden", 3rd ed., vol. II, Freising-Weihenstephan 1993).
The method is also applicable to the analysis of non-alcoholic beer.
The real extract can be directly determined from the thermical unchanged extract residue in the distillation flask i.e. without the formula by Tabarié.
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Most important features |
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Measurement is based on distillation: the method of choice for the performance of any scientific and/or official analysis the method that sets the standrads all other methods of analysis must meet. Just fill in the sample liquid and press the START button to activate the fully automated quick distillation process (a standard sample of 100 ml will be distilled over within little more than two minutes)! |
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Fully automated running (timed) of the quick distillation program or, as an option, manual control of the distillation process (indispensable to the direct determination of the real extract)! |
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In consequence: both energy saving and economies on cooling water the cooling water supply is only turned on during distillation cycles (consumption of cooling water per 100 ml of sample liquid: approx. 5.5 l)! |
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Volume of steam and duration of the distillation cycle are freely definable ideal for the determination of a variety of substances contained in beer! |
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No need to remove the distillation flask at the end of each distillation cycle! |
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Very quiet operation of the distillation unit! |
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Burning-in of samples in the distillation unit is absolutely excluded! |
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As a result of the extremely gentle extraction process, extracts will remain completely unaltered (absolutely no chemical changes due to overheating or similar cases) and can, therefore, be used for further analysis. |
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The readings for density and alcoholic strength may either be taken with ultrahigh-precision hydrometers or optional, yet even or expedient with officially verified hydrometers provided with official certificates of verification/calibration. In that latter case, the extremely high measuring accuracy of the corresponding hydrometers is publicly attested to by a government agency and the measured results are therefore even admissible as evidence in a court of law. KUEBLERs range of products covers densimeters with a measuring accuracy of 0.00003 g/ml as well as alcoholometers with a measuring accuracy of 0.02 % vol. And this is not just another advertising statement (promotion) easy to write down, but hard to verify -, this is a fact that has been confirmed by numerous German government offices of verification. We use hydrometers for two main reasons: First, all brewers are very familiar with the handling of those instruments and, second, the cost-to-performance ratio of hydrometers is far better than that of all comparable measuring instruments. |
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Precise, self-adjusting "natural thermostatic control" of sample, distillate and distilled water no costly additional thermostat required. A tank full of water (a special cooling tub) can be used instead. |
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Hydrometric measurement is performed by means of an innovative measuring system (special glass cylinders suspended in a cardanic stand equipped with a powerful magnifying glass that is fixed to the stand by means of Velcro fastener and, therefore, freely adjustable). This system eliminates practically all difficulties traditionally encountered in hydrometric measurement: The hydrometer is positionned in the middle of a special glass and will maintain that position while it sinks, slowly and without any rotation, into the sample liquid. This eliminates not only the risk that the hydrometer might accidentally collide with the bottom of the glass cylinder but it also ensures that the hydrometerwill finally be in the ideal positon for its readings to be taken with the help of the magnifying glass. Just forget all you know about conventional hydrometric measurement! |
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An extremely user-friendly PC program for the speedy and error-free performance of any and all calculations needed is included in the price of system. That program has been successfully tested in many practical applications and, as it is self-explaining, can also be used by personnel without computer skills. All relevant data are reliably captured and safely stored, all results are presented in a clearly structured form. The program can be installed on any PC operating under Windows or Windows 95 that is equipped with a central memory of (at least 2 MB, Print-outs of all calculated results optionally with indication of the type of beer analysed, the date and the time of the test, etc. can either be made instantaneously or later. In addition to that, the program also provides for the fully automated compensation of any deviations from the official standards that are stated in the verification/calibration certificate of any particular hydrometer used. Thus, whenever hydrometers are employed that have either been calibrated or verified by a government office for verification and that have subsequently been provided with an instrument-specific certificate of calibration/verification the truly phenomenal measuring accuracy that can be reached with those hydrometers within a range of 0.00001 g/ml (or better) for densimeters or 0.01 % vol. (or better) for alcoholometers is in fact officially documented by the competent government office for verification. That extremely high level of accuracy is achieved by storing any deviations (i.e.: if any) of the hydrometer scale and/or of the scale of a built-in thermometer from the relevant national standards of the Federal Republic of Germany at the Physikalisch-Technische Bundesanstalt (i.e. the Federal Agency for Physics and Technology) that have been noticed at the verification of the corresponding hydrometer in an instrument-specific PC data file. This ensures that such deviations will be automatically compensated whenever a corresponding hydrometer is used. |
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Independence and flexibility no need to wait for laboratory results! |
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No laboratory cost, no shipping expenses ...! |
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Measuring accuracy: at least as good as that of the most favoured methods of official analysis. Absolutely flawless results yet much easier to handle and far less time-consuming than any method currently used for official analysis! |
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No skilled operators required! |
To summarize all of the above in one sentence:
We have not only succeeded in speeding up the standard method of scientific analysis, but at the same time, we have also succeeded in making it safer and easy to handle for virtually everyone while fully maintaining its extremely high level of measuring accuracy.
IDEAL FOR USE IN ALL BREWERIES NOT ONLY FOR THE MONITORING OF SUCH PIECES OF ANALYTICAL EQUIPMENT AS CANNOT BE SUBMITTED TO OFFICIAL VERIFICATION (E.G. FULLY AUTOMATED ANALYSIS SYSTEMS), BUT ALSO AS A REFERENCE METHOD, E.G. FOR THE PERFORMANCE OF COMPLIANCE CHECKS IN RESPECT OF DIN/ISO 9000 AND/OR RELATED STANDARDS.
BEERDIST 2 consists of:
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Quantity |
Cat. No. |
Description |
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1 |
L 1090 |
AUTODEST 10 (automated distillation system) including 1 feed house couplings, 1 discharge hose for cooling water ( 2,5 m long) and pump unit for distilled water |
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1 |
L 2000 |
cardanic stand |
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1 |
L 2002 |
reducing adapter with matching O-ring for use with L 2000 |
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1 |
L 2006 |
reading glass for use with L 2000 |
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1 |
K 1170 |
plastic tub with discharge hose ( 2 m long) |
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1 |
K 1183 |
glass measuring flask (100 ml) with plastic stopper |
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6 |
K 1177 |
glass measuring cylinders for use with L 2000 |
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1 |
K 1193 |
plastic spray-bottle (250 ml) for distilled water |
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2 |
K 1360 |
plastic pipettes ( 3 ml ) |
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3 |
K 1185 |
plastic bottles ( 250 ml ) for liquid samples |
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4 |
K 1196 |
lead rings |
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1 |
K 1191b |
antifoaming agent |
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1 |
K 1403 |
floating thermometer |
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1 |
K 1502 |
plastic storage rack for up to 10 hydrometers |
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1 |
K 1505 |
plastic storage rack for up to 6 glass measuring cylinders |
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1 |
L 1013 |
plastic graduated beaker ( 250 ml) |
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1 |
L 1046 |
plastic funnel |
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1 |
A 510100 |
hydrometer with built-in thermometer, scale division: 0,0001 g/ml; body Ø: 23 mm; length: approx. 370 mm, measuring range: 1,0000 1,0060 |
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1 |
A 510200 |
as above, measuring range: 1,0060 1,0120 |
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1 |
A 510300 |
as above, measuring range: 1,0120 1,0180 |
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1 |
A 510400 |
as above, measuring range: 1,0180 1,0240 |
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1 |
A 510500 |
as above, measuring range: 1,0240 1,0300 |
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1 |
A 511000 |
matching range finder hydrometer, without thermometer, g/ml; scale division: 0,0005, body Ø: 23 mm, length: approx. 370 mm; measuring range: 1,000 - 1,0300 |
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1 |
A 512000 |
alcoholometer with built-in thermometer, % vol., scale division: 0,05; body Ø: 23 mm; length: approx. 370 mm; measuring range: 0,0 0,5 |
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1 |
A 300110 |
alcoholometer with built-in thermometer, %vol.; scale division: 0,1; body Ø: 23 mm, length: approx. 370 mm; measuring range: 2 - 7 |
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1 |
K 3401 |
beer analysis program for PCs |
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1 |
K 3501 |
set of tables 1 & 2 + reading square |
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1 |
K 3502 |
set of tables 3 & 4 |
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1 |
K 3505 |
set of tables 20 & 21 |
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1 |
K 3507 |
test data sheet for beer analysis |