HANNA HI83749 Portable Turbidity Meter

Wines with low phenol contents, such as rosé, light reds and whites should be checked for protein stability before bottling. HANNA is offers a quick test to verify the risk of future protein haze formation. If protein instability is detected, a subsequent test can help define the right amount of bentonite to be added for improving protein stability. It is important not to overdose bentonite to avoid stripping wine flavor, body, and significant loss of color, especially in young red wines. Moreover, adding only the necessary amount of bentonite to obtain the desired protein stability also saves costs.

The HI 83749 measures turbidity of samples from 0.00 to 1200 NTU (Nephelometric Turbidity Units) and is USEPA compliant. In the USEPA measurement mode the instrument rounds the readings to meet USEPA reporting requirements.

Specification:
Range         0.00 to 9.99 NTU; 10.0 to 99.9 NTU; 100 to 1200 NTU automatic range selection
Resolution         0.01 NTU from 0.00 to 9.99 NTU; 0.1 NTU from 10.0 to 99.9 NTU; 1 NTU from 100 to 1200 NTU
Accuracy @25°C         ±2% of reading plus 0.05 NTU
Repeatability         ±1% of reading plus 0.05 NTU
Stray Light         < 0.05 NTU
Light Source         tungsten filament lamp
Light Detector         silicon photocell
Method         Ratio Nephelometric
Calibration         two, three or four points
Log Memory         200 records
PC Connectivity         RS232 or USB 1.1
Environment         0 to 50°C; max 95% RH non-condensing
Power Supply         1.5V AA batteries (4) / 12 VDC adapter
Auto-off         after 15 minutes of non-use
Dimensions / Weight         224 x 87 x 77 mm (8.7 x 3.3 x 3.1") / 512 g (17.6 oz.)