The HI93124 Portable Haze Meter is specially designed for measurement of haze in beer quality analysis. The instrument is based on a state-of-the-art optical system which guarantees accurate results, assures long term stability, and minimizes stray light and color interferences. The 10 mm round cuvettes composed of special optical glass guarantee the repeatability of turbidity measurements.
EBC Compliant Measurement – The HI93124 meets the requirements of the EBC standard for haze measurements. Measurements are taken from beer samples that have been degassed, and results are reported in European Brewery Convention units (EBC).
Calibration – A two or three point turbidity calibration can be performed by using the HI93124-03 calibration standards
AMCO AEPA-1 Primary Turbidity Standard – The AMCO AEPA-1 standards are recognized as a primary standard by the USEPA. These non-toxic standards are made of styrene divinylbenzene polymer spheres that are uniform in size and density. The standards are reusable and stable with a long shelf life.
GLP Data – The HI93124 features GLP (Good Laboratory Practice) functions that allow traceability of the calibration. Data includes date and time.
Data Logging – Up to 199 measurements can be stored in the internal memory and recalled at any time.
Data Transfer – For further storage or analysis options, logged data can be downloaded to a Windows compatible PC using the RS232 port and the HI92000 software.
Backlit Display – A backlit LCD display provides an easy to understand, user-friendly interface. Displayed codes guide the user step-by-step through routine operation and calibration.
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
Beer Haze Table
0.0 to 0.5
0.0 to 34.5
0.5 to 1.0
34.5 to 69
Very Slightly Hazy
1.0 to 2.0
69 to 138
2.0 to 4.0
138 to 276
4.0 to 8.0
276 to 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
Provided storage containers
- Lot number
- Expiration date
- Standard value @ 25 °C
- Light tight
- Protects from accidental breakage
- Lot number
Turbidity Range 0 to 10.00 EBC and 10 to 250 EBC Turbidity Resolution 0.01 EBC or 1 EBC Turbidity Accuracy ±0.20 EBC ±3% of reading (0.00 to 10.00 EBC); ±1 EBC ±5% of reading (outside) Turbidity Calibration Two or three-point calibration Turbidity Light Source Infrared LED @ 890 nm Turbidity Light Detector SiliconPhotocell Logging Memory 199 records Connectivity RS232 Automatic Shut-Off After 5 minutes of non-use Display backlit LCD Battery Type/Life 4 (1.5V) AA batteries / 60 hours or 900 measurements Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing Dimensions 220 x 82 x 66 mm (8.7 x 3.2 x 2.6") Weight 510 g (1.1 lb.) Ordering Information HI93124 is supplied with sample cuvettes and caps (2), 4 (1.5V) AA batteries, instruction manual, and rugged carrying case.