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Discover Attension Sigma Solo and all of its advantages in this 1 minute long video.

Measurements

Measure surface and interfacial tension with Du Nouy ring, Wilhelmy plate and rod methods and liquid density.

Surface and interfacial tension measurements Surface and interfacial tension measurements
Density For liquid density measurements

Full automation with standalone simplicity

Intuitive user interface

with guidance

Automated measurements

Let the instrument do the work for you

Key features

Quick measurements

Get results in minutes
Results as pdf files

Transfer results from the instrument to your computer or phone through USB-C connection
High precision

Highly sensitive balance combined with super accurate samples stage movement guarantee reliable measurements
Multiple correction methods for Du Nouy ring

Huh-Mason, Zuidema-Waters and Harkin-Jordan corrections available
Several probe options for surface tension

Use Platinum Du Nouy ring or Wilhelmy plate, platinum rod or paper plates
Additional capabilities

Add advanced sample stage for temperature, pH or stirrer. Include ionizer to remove static discharge

All-inclusive system

Easy operation without PC

Sigma Solo features an intuitive touch display with a guided interface, making surface and interfacial tension analysis straightforward — minimal training required, from measurement to report.

Applications

Chemicals
Coatings
Food & beverages
Pharmaceutical
Energy
Environment

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Standalone excellence

Attension Sigma Solo combines dependable automation, established measurement techniques and true stand-alone operation to deliver accurate surface tension, interfacial tension and liquid density data, measurement after measurement. Whether you are running quality control, qualifying incoming materials or performing routine testing. Sigma Solo is your reliable force tensiometer for everyday analysis.

Why Sigma Solo?

Automated results

Standalone operation with full automation

The instrument is fully automated, and measurements can be performed easily with a single tap. The embedded software guides you through the measurements of surface and interfacial tension and liquid density. Results are presented on the screen immediately after the measurement is completed.

Quick data sharing

Easy result transfer

Sigma Solo utilizes modern USB-C technology which enables easy data output when measurement results need to be saved. Connect the instrument to a PC or a mobile phone to transfer the automatically produced PDF reports to your own data storage system. Up to 100 measurements can be stored in instrument memory.

More possibilities

Advanced options

Sigma Solo can be equipped with protective doors to reduce the effect of air flow on the measurement results. An advanced sample stage enables a stirrer and the connection of temperature and pH probes for sample monitoring. An ionizer can be added to eliminate issues caused by static charge.

Standalone operation

Sigma Solo is operated through intuitive touch display. The results are shown in a table format immediately after the measurement is completed. The data can be transferred to PC or even through phone as a .pdf file.

Several probe options

Sigma Solo can be used with platinum Du Noüy ring, platinum, and paper Wilhelmy plates, and platinum rod. Using the paper plate removes the need for cleaning as the plates are disposable. Using the platinum rod, allows surface tension measurements of small volumes, down to few ml.

Built-in bubble level and ambient temperature monitoring

Sigma Solo has a built-in bubble level indicator close to the balance to ensure levelness where it matters the most. Ambient temperature sensor monitors the environment constantly for better result traceability.

Optional functionalities

Advanced sample stage

Include advanced sample stage to add stirrer, or possibility to connect temperature or pH sensors. Add temperature vessel to control sample temperatures between -20 to +200C.

Ionizer

Add built-in ionizer to reduce the static charge of the sample. Especially meaningful when measuring very small forces such as in fiber wettability.

Chamber doors

Add doors to the instrument to protect the measurement chamber from airflow.

A closer look

Dive into the specifics of Sigma Solo and compare it to our other instruments to make a smart decision on what you need.

Measurement Capabilities

Surface tension with Du Noüy ring	√
Surface tension with Wilhelmy plate	√
Surface tension with rod	√
Interfacial tension with Du Noüy ring	√
Density of liquid	√

Measurement performance

Surface tension	1....2000 mN/m
Displayed resolution	0.01 mN/m
ST resolution - ring	0.01mN/m
ST resolution - plate	0.02 mN/m
Density range	0...2.2 g/cm³
Density resolution	0.001 g/cm3

Balance and force sensing

Max. load	5 g
Weight resolution	0.01 mg
Force resolution	10 μg
Measurement rate	50 Hz
Taring	Automatic
Calibration & Locking	Manual

Sample stage & Motion

Travel distance	125 mm
Sample stage	Automatic
Sample stage speed	0.001 - 800 mm / min
Stage position resolution	16 nm

Instrument - Physical & Electrical

Dimensions (L x W x H)	265 x 300 x 500 mm
Weight	15 kg
Power supply	100 ... 240 VAC
Frequency	50 - 60 Hz
Power consumption	20 W
Connectivity	USB-C
Standalone	Yes
PC-controlled mode	No

Accessories

Ionizer	Optional
pH Sensor	Optional
Temperature control range	-20....+200 °C
Stirrer	Optional
Bubble level	Built-in
Ambient temperature sensor	Built-in
Thermostatic vessel	Optional
Temperature probe	Optional

Software & System Requirements

Software	Integrated
Result output	.pdf

Standalone operation

Sigma Solo is built for routine surface and interfacial tension measurements, no computer required. Its standalone operation delivers quick, reliable results for everyday quality control and production work. One instrument, ready when you are.

Integrated Software

Operation via touch display

Sigma Solo has embedded software allowing full instrument operation via touch display.
Surface and interfacial tension made easy

Surface and interfacial tension as well as liquid density measurements can be performed with ease.
No training needed

Intuitive user interface with guidance provides a platform that can be used by anyone with minimum training needed.

Intuitive UI for surface and interfacial tension

Standalone mode has intuitive user interface allowing measurements of surface and interfacial tension with Du Noüy ring, surface tension with Wilhelmy plate, and density.

Default settings and guided measurements

Each measurement type has default settings that can be used in most use cases. If needed, modification of the most important parameters can be done. User interface will guide the operator through the measurement steps.

Results displayed on screen and .pdf

Immediately after the measurement is completed, the results are shown on the instrument screen. Each measurement will automatically create .pdf file, up to 100 of them can be stored in the instrument memory. Connect the instrument to computer or phone via USB-C and store the reports to external drive, quality system or share with the colleagues.

Add more possibilities

Check out accessories and modules available for Sigma 702. We selected a few favorites for you, but you can always find the whole list below.

Platinum Du Nouy ring

Pt-Ir-ring made to fulfill the requirements at least in following standards; ISO 301, ISO 4311, ISO 6889, ASTM D1331 and ASTM D 971. Includes also additional weight for push-mode.

Platinum Wilhelmy plate

Platinum Wilhelmy plate with micro roughened surface.

Thermostatic vessel (from -20 to +200°C)

Chamber made from Teflon and Aluminum for temperature control of the sample liquid. A heat exchange vessel with fluid jacket type of construction. Heating/cooling of the fluid jacket requires external bath/circulator (T102ME or T102USB). Fits glass sample vessel 70 mm in diameter (T104). Operable temperature range from -20 to +200°C .

t705a

For printing results directly from instrument into paper.

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What others say

Our instruments are present at many prestigious universities and research facilities world wide. Take a minute to find out what others say about our Sigma Instruments.

citat8

Researcher at Riken, Japan

"We wanted the most accurate force tensiometer on the market for our research on surface tension. Our in-depth testing of the Attension force tensiometer convinced us: it is the one."

Riken, Japan

Riken is a Japanese research institute established in 1917. Its research areas include physics, chemistry, biology, medical science, engineering and computational science.