Portable EBC Haze Meter
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Significance of Use
Beer clarity is a parameter constantly controlled in the brewery. Clarity can be affected by haze, an insoluble or semi-soluble particulate matter which is small enough to form a colloidal suspension in beer. These particles scatter transmitted light and are observed as a degradation in the brilliance of the beer. To assure consistent product quality, the brewmaster needs more than visual inspection.
Several substances can cause haze in beer, but the most frequently encountered problem is due to a cross-linking of polyphenols and proteins. These materials exist in equilibrium in beer and manifest themselves as a haze when they combine to form insoluble colloids. A range of stabilization treatments is available for avoiding haze problems, and the product has to be controlled in several steps during the brewing process, particularly after filtration and before the beer enters the bright tanks.
The HI93124 Portable Haze Meter reports the measurements in EBC (European Brewery Convention) units. EBC units are ¼ of an FTU and FTU units are equal to NTU units (Nephelometeric Turbidity Units). The conversion table between these measurement units is shown below:
Conversion Table
|
FTU/NTU/FNU |
EBC |
ASBC |
HELM |
|
|
1 FTU 1 NTU 1 FNU |
1 |
0.25 |
17.25 |
10 |
|
1 EBC |
4 |
1 |
69 |
40 |
|
1 ASBC |
0.058 |
0.014 |
1 |
0.579 |
|
1 HELM |
0.1 |
0.025 |
1.725 |
1 |
Beer Haze Table
|
Grade |
EBC |
ASBC |
|
Brilliant |
0.0 to 0.5 |
0.0 to 34.5 |
|
Almost Brilliant |
0.5 to 1.0 |
34.5 to 69 |
|
Very Slightly Hazy |
1.0 to 2.0 |
69 to 138 |
|
Slightly Hazy |
2.0 to 4.0 |
138 to 276 |
|
Hazy |
4.0 to 8.0 |
276 to 552 |
|
Very Hazy |
> 8.0 |
> 552 |
The HI93142 is designed according to the EBC standard for haze in beer measurements, compensating for beer color to guarantee accuracy. The light beam that passes through the sample is scattered in all directions. The intensity and pattern of the scattered light is affected by many variables, such as wavelength of the incident light, particle size and shape, refractive index, and color. The optical system includes an LED light with a 890 nm wavelength and a scattered light detector (90°). The HI93142 features a powerful microprocessor that calculates the EBC value from the signal that reaches the light detector.
The HI93124-03 AMCO AEPA-1 standards ensure that measurements are traceable to primary reference materials. These standards are used for calibration and performance verification of the turbidity meter.
Supplied with Certificate of Analysis
- Lot number
- Expiration date
- Standard value @ 25 °C
- Provided storage containers
- Light tight
- Protects from accidental breakage
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