Surface Tensiometer

The new ST-PLUS Semi-automatic Surface Tensiometer from Tantec, i . offers advanced, microprocessor based measurement using either the Wilhelmy Plate or DuNouy Ring Methods. This instrument can be used for evaluation of liquid surface tension in studying liquid surface tension in  studying liquid solubility, coating, wetting bubbling and permeability. The ST-PLUS can be used to study how liquid surfaces bahave or to take measurements applicable to QC studies.

The ST-PLUS gives you ease of use and microprossor based results at an affordable price. By simply raising and lowering the sample with the manual stage, you can get results quickly with no additional calculations. Results are then printed to the thermal printer, which accompanies the unit. Printer will give date, measurement mode, sample number and the results. The results can also be exported to a PC.

The ST-PLUS Semi-automatic Surface Tensiometer features:

• Automated calculation of results to avoid operator error
• Automatic readout and printout of equilibrated surface tension for complete professional documentation and reporting of results
• Several measurement options including both the Wilhelmy Plate and DuNouyy Ring Methods
• Ability to measure interfacial surface tension and high viscous material

Tension measurement method due to:

• The plate used is more stable than the stage of the du Noüy method, where the ring is easily bent and is an added measurement error
• Whilhelmy plate measurement technique allows for variation in time of surface tension to be measured. The du Noüy method does not allow for such time-based surface tension measurements, as it relies on the detachment phenomenon of the liquid from the ring
• Ability to measure high viscosity liquids with little effect on the accuracy, as these type of liquids provide a larger stress to the balance upon detaching the ring from the liquid surface

Standard ST-PLUS Semi-automatic Surface Tensiometer package includes:

• Tensiometer
• Printer
• 2 glass lab dishes
• 2 platium plates
• Calibration weights
• Tweezers
• Alcohol burner

Specifications

• Measuring methods: Wilhelmy Plate Method (optional du Noüy ring)
• Measuring range: .01-100 dynes/cm
• Printout (Std): Sample #, Measurements, time, date and measuremment mode
• Accuracy: กพ0.01
• Input Voltage: 110V
• Dimensions: 8"W x 13"D x 12,25"H (153 x 330 x 312mm)
• Weight: 30 lbs ( 14 kgs)
• Output: Serial RS-232C, Analogue