Biolin - Force Tensiometers

	Sigma 700	Sigma 701	Sigma 702	Sigma 702 ET	Sigma 703 D
Surface tension	V	V	V	V	V
Interfacial tension	V	V	V	V	V
Critical Micelle Concentration	Automatic	Automatic	Manual	Manual	Manual
Dynamic contact angle	V	V	–	–	–
Surface free energy	V	V	–	–	–
Powder wettability	V	V	–	–	–
Density	V	V	V	V	V
Sedimentation	V	V	–	–	–

Sigma 700

Sigma 701

Sigma 702

Sigma 702 ET

Sigma 703 D

Surface tension

Interfacial tension

Critical Micelle Concentration

Automatic

Manual

Dynamic contact angle

–

Surface free energy

–

Powder wettability

–

Density

Sedimentation

–

	Sigma 700	Sigma 701	Sigma 702	Sigma 702 ET	Sigma 703 D
Measuring range (mN/m)	1…2000	1…2000	1…1000	1…1000	1…1000
Displayed resolution (mN/m)	0.001	0.001	0.01	0.01	0.01
Density range (g/cm3)	0…2.2	0…2.2	0…2.2	0…2.2	0…2.2
Density resolution (g/cm3)	0.0001	0.0001	0.0001	0.0001	0.0001
Maximum load (g)	210	5	5	5	5
Weighing resolution (mg)	0.01	0.005	0.01	0.01	0.01
Force resolution (µN)	0.1	0.05	0.1	0.1	0.1
Contact angle range (°)	0…180	0…180	–	–	–
Contact angle resolution (°)	0.01	0.01	–	–	–
Calibration & Locking	Automatic	Manual	Manual	Manual	Manual

Sigma 700

Sigma 701

Sigma 702

Sigma 702 ET

Sigma 703 D

Measuring range (mN/m)

1…2000

1…1000

Displayed resolution (mN/m)

0.001

0.01

Density range (g/cm3)

0…2.2

Density resolution (g/cm3)

0.0001

Maximum load (g)

210

Weighing resolution (mg)

0.01

0.005

0.01

Force resolution (µN)

0.1

0.05

0.1

Contact angle range (°)

0…180

–

Contact angle resolution (°)

0.01

–

Calibration & Locking

Automatic

Manual

	Sigma 700	Sigma 701	Sigma 702	Sigma 702 ET	Sigma 703 D
Sample stage	Motorized	Motorized	Motorized	Motorized	Manual
Sample stage speed (mm/min)	0.01…500	0.01…500	0.01…500	0.01…500	–
Stage positioning resolution (µm)	0.016	0.016	0.26	0.26	–
Dimensions (L×W×H, cm)	33.3×24.4×62	33.3×24.4×62	33.3×24.4×62	33.3×24.4×62	27.5×15.5×39
Weight (kg)	16.3	13	10.7	10.7	4.9
Power supply (VAC)	85…264	85…264	85…264	85…264	100…240
Power consumption (W)	13	13	13	13	7
Frequency (Hz)	47…440	47…440	47…440	47…440	50…60

Sigma 700

Sigma 701

Sigma 702

Sigma 702 ET

Sigma 703 D

Sample stage

Motorized

Manual

Sample stage speed (mm/min)

0.01…500

–

Stage positioning resolution (µm)

0.016

0.26

–

Dimensions (L×W×H, cm)

33.3×24.4×62

27.5×15.5×39

Weight (kg)

16.3

10.7

4.9

Power supply (VAC)

85…264

100…240

Power consumption (W)

Frequency (Hz)

47…440

50…60

Available models

Sigma 700/701

Dive into the specifics of Sigma 700/701 and compare them to each other to make a smart decision on what you need. Sigma 700 and 701 have full support of all measurement modes, making them adaptable to all measurements and applications. However, they are also optimized for different experiments. Sigma 700 is the optimal choice especially for powder wettability and contact angle experiments. Sigma 701 is a great choice for surface tension and interfacial tension experiments due to its very high sensitivity.

What you can measure

Surface tension: Du Noüy ring and Wilhelmy plate methods
Interfacial tension: Du Noüy ring and Wilhelmy plate methods
Critical Micelle Concentration: Du Noüy ring and Wilhelmy plate methods
Dynamic contact angle: Wilhelmy methods
Surface free energy: Based on contact angle measurements
Powder wettability: Washburn method
Density: Density probe
Sedimentation: Sedimentation probe
Adhesion force: Liquid droplet pull-off method

Sigma CMC

Sigma CMC is based on the versatile Sigma 701 that is known for its particularly high sensitivity. It can also be used with the Sigma 700 which is optimized for powder wettability and contact angle measurements.

What you can measure

Critical Micelle Concentration: Du Noüy ring and Wilhelmy plate methods
Surface tension: Du Noüy ring and Wilhelmy plate methods
Interfacial tension: Du Noüy ring and Wilhelmy plate methods
Dynamic contact angle: Wilhelmy methods
Surface free energy: Based on contact angle measurements
Powder wettability: Washburn method
Density: Density probe
Sedimentation: Sedimentation probe
Adhesion force: Liquid droplet pull-off method

Sigma 702

A standalone force tensiometer with automated sample stage for precise measurements. Easy to operate.

What you can measure

Surface tension: Du Noüy ring and Wilhelmy plate methods
Interfacial tension: Du Noüy ring method
Critical Micelle Concentration: Manual measurements with Du Noüy ring and Wilhelmy plate methods
Density: Density probe

Sigma 702ET

Transformer Oil Analyzer specifically designed for measurements of interfacial tension of transformer oil according to relevant standards.

What you can measure

Oil-water interfacial tension: Measured with a Du Noüy ring in accordance to the ASTM D971 and IEC 62961 standards
Surface tension: Du Noüy ring method
Interfacial tension: Du Noüy ring method
Critical Micelle Concentration: Manual measurements with Du Noüy ring
Density: Density probe

Sigma 703D

A manual standalone force tensiometer. Easy to use and perfect for simple measurements of surface tension and interfacial tension.

What you can measure

Surface tension: Du Noüy ring and Wilhelmy plate methods
Interfacial tension: Du Noüy ring method
Critical Micelle Concentration: Manual measurements with Du Noüy ring and Wilhelmy plate methods
Density: Density probe