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Force and mechanical measuring equipment
– Portable turbidity meter for monitoring protein and bentonite stability in wine.
– The machine is supplied with pre-measured standard solutions and reagents.
– Data transfer via USB or RS232
– Automatic data recording
– Fast Tracker™ Tag Identification System (TIS)
– GLP data
LCD BACKLIGHT
– Blue backlight, warm and user-friendly.
– Display codes guide the user through routine operations and calibration.
Two, three, four point turbidity calibration using supplied standards (<0.1, 15, 100, 500 NTU) or user standards.
AMCO AEPA-1 TURBIDITY STANDARD SOLUTION
AMCO AEPA-1 Standard is recognized by USEPA. The non-toxic standard is made of styrene divinylbenzene polymer that is uniform in size and density. The solution is pre-contained in cuvettes and light-proof protective boxes and can be used repeatedly until the expiry date.
PRE-DOSED, EASY-TO-USE BENTONITE REAGENT
The reagent vials are pre-measured, simply take 1mL and follow the instrument's Instructions for Use.
Data collection and management has never been simpler. Fast Tracker™ allows users to record the time and location of specific or batch measurements using iButton® tags near sampling points for quick and easy results. Each iButton® tag contains a computer chip with a unique identification code encased in stainless steel.
USB AND RS232 PORTS
Logged data can be downloaded to a Windows PC using the USB or RS232 port and HI 92000 software.
– Full GLP (Good Laboratory Practice) functionality allows traceability of standard conditions.
– Data includes benchmarks, dates, and times.
DATA LOG
Up to 200 measurements can be stored in the meter's memory and reviewed at any time.
CONVENIENT, STURDY MACHINE CARRYING LIFLE
The HI83749 meter comes complete with all the essential accessories needed to take measurements without the need for additional purchases.
Includes: meter, sample cuvettes and caps (6), HI83749-0 bentocheck reagent, HI83749-11 standard cuvettes, silicone oil, 1000 µl automatic pipette, 25 mL glass vials with caps (4), 1 mL syringe, cuvette wiping cloth, batteries, 12 VDC adapter, instructions and carrying case.
IMPORTANCE
Unrefined wines often suffer from reduced clarity or turbidity due to suspended solids produced during fermentation, and to deal with this problem, special chemicals are used, and are often treated with chemicals that increase the clarity of the wine. Among them, thaumatin-like proteins (TLPs) and chitinases are the two main proteins that are thought to cause turbidity in wine, these substances are easily altered and combine together into clusters, creating hazy streaks, reducing the clarity of the wine.
Stabilizing and preventing protein precipitation in white wine before bottling is a very common problem in the winemaking process. One of the most common substances today is bentonite, a substance often found in soft volcanic soil (such as Kaolin), which will increase the clarity and stability of the wine, but also has the drawback of creating sediment layers, reducing tannins and discoloring the wine. Because there are many types of bentonite with different protein stabilization abilities, it is necessary to test in the laboratory many times to determine the appropriate amount of bentonite to add to the wine cellar.
Normally, in red wine, because of the high content of phenols, it will automatically combine with unstable proteins and precipitate before bottling, so there is usually no problem with wine stabilization. Just add about 12 g/hL bentonite (1 lb/1000 gal) to the wine to partially remove suspended solids, increasing the efficiency of the filtration process.
However, for wines with low phenols content such as white wine, light red wine, protein stability needs to be tested before bottling. Based on that need, Hanna has created a device that can quickly test to determine the risk of protein causing cloudiness in wine in the future. If the protein is found to be unstable, the next test step will determine the amount of bentonite needed to increase protein stability. It is important to note that too much bentonite should not be added, to avoid changing the smell, taste and color of the wine, such as light-colored wines. In addition, adding just the right amount of bentonite will help the wine have the highest stability at the most economical cost.
Initially, the winemaker will determine the initial turbidity of the raw wine using the HI83749, then add the HI83749-20 Bentonite reagent to the sample and measure it a second time. If the second reading is lower than the initial reading + 2 NTU, the wine is stable, otherwise, the next step is to determine how much Bentonite needs to be added to stabilize the wine.
The HI83749 is built with a powerful processing system that automatically calculates the NTU value from the signals received by the two light detectors, and the algorithm automatically compensates for any color effects that may affect the measurement results. In addition, the optical system and measurement method have been improved to compensate for fluctuations in light intensity, reducing the need for frequent recalibration.
SPECIFICATIONS
|
The scale |
0.00 to 9.99; 10.0 to 99.9; 100 to 1200 NTU |
|
Resolution |
0.01; 0.1; 1 NTU |
|
Select scale |
Automatic |
|
Accuracy |
±2% measurement result plus 0.05 NTU |
|
Repeatability |
±1% measurement result or 0.02 NTU whichever is larger |
|
Lost light |
< 0.05 NTU |
|
Light detector |
silicon photovoltaic cells |
|
Method |
nephelometric ratio method |
|
Measurement mode |
normal, average, continuous |
|
Turbidity standard solution |
< 0.1, 15, 100, and 500 NTU |
|
Calibration |
two, three or four points |
|
Light source |
Tungsten filament lamp / greater than 100,000 values |
|
Screen |
60 x 90 mm with backlight |
|
Memory |
200 records |
|
Connect |
USB or RS232 |
|
Environment |
0 to 50°C (32 to 122°F), RH max 95% non-condensing |
|
Source |
4 1.5V AA batteries / 12 VDC adapter; Automatically turns off after 15 minutes of non-use |
|
Size |
224 x 87 x 77 mm |
|
Mass |
512 g |
|
Supply includes |
– Measuring machine HI83749 – 6 cuvette sample and lid – Reagents bentocheck HI83749-0 - Set calibration solution HI83749-11 – Silicone oil HI93703-58 – Automatic pipette 1000 µl – 4 25 mL glass tubes with caps – 1 mL syringe – Cuvette cleaning cloth - The battery – 12 VDC Adapter - User manual - Warranty – Quality certification of measuring device – Carrying case. + HI83749-01: 115V + HI93749-02: 230V |
|
Guarantee |
12 months (for products with intact tags and warranty card) |
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment