Theta Lite

Theta Lite

Contact angle meter for simple and precise measurements. Clean and compact instrument with user-friendly design.

What you can measure

Static contact angle
Sessile drop, captive bubble and meniscus methods
Dynamic contact angle
Dynamic contact angle, advancing and receding contact angle, contact angle hysteresis and roll-off angle
Surface free energy
Sessile drop, captive bubble and meniscus methods
Surface- and interfacial tension
Pendant drop and reverse pendant drop methods
Roll-off angle
Batch contact angle

3 reasons to invest

Incredibly easy to use

Theta Lite is controlled with OneAttension software that has been designed for extreme user-friendliness. OneAttension analyzes your results in real-time and includes a batch quality control measurement mode for efficient industrial quality control. No complicated adjustments needed, the system comes fully assembled and ready to perform.

Packed with smart features

The automatic disposable tip dispenser ensures you don’t need to worry about cleaning as droplets are created precisely using a disposable pipette tip. The droplet volume is calculated from the live image with advanced machine vision to ensure repeatability.

Designed for high accuracy

Precise automated or manual droplet deposition will keep the droplet volume the same each time to minimize any result variation. The Theta Lite camera captures the extremely fast wetting phenomena up to 2068 FPS and performs exceptionally precise drop shape analyses with 1280 x 1024 pixel resolution. It is included in every Theta Lite system as a default.

	Theta Flow	Theta Flex	Theta Lite
Available Measurements
Static contact angle and captive bubble	√	√	√
Batch contact angle	√	√	√
Dynamic contact angle	√	√	√
Meniscus contact angle	√	√	√
Surface/Interfacial tension	√	√	√
3D surface roughness and roughness-corrected contact angle	√	√	-
Interfacial rheology	√	√	-
Surface free energy	Zisman Plot, OWRK/Extended Fowkes, van Oss Acid-Base, Wu, Neumann’s Equation of State, Schultz 1 and 2
Software and hardware
Measuring range (°, mN/m)	0…180, 0.01…2000	0…180, 0.01…2000	0…180, 0.01…2000
Accuracy (°, mN/m)	±0.1, ±0.01	±0.1, ±0.01	±0.1, ±0.01
Maximum sample size (mm)	Unlimited×100×320	Unlimited×100×320 (with stage)	Unlimited×45×200 (with stage)
Integrated sample holders	√	√	√
Maximum resolution (px)	2592 x 2048 (5 MP)	1984 × 1264 (2.3 MP)	1280 × 1024 (1.3 MP)
Maximum measuring speed (fps)	3422	3009	2068
Camera	CMOS 1'' USB 3.0 digital camera with zoom	CMOS 2/3'' USB 3.0 digital camera with zoom	CMOS 1/2'' USB 3.0 digital camera with fixed zoom
Image focusing	Software-controlled autofocus, manual fine focus in optics	Manual fine focus in optics	Manual fine focus by optical rail
Image quality	Enhanced with DropletPlus technology, Native	Native	Native
Camera protection	Inside instrument covers	Inside instrument covers	Inside instrument covers
Camera view angle (°)	-4 ... 2.5, with digital scale	-4.5 ... 2.5, with mechanical scale	-2 ... 2
Light source and size	LED based homogeneous background lighting, 62 x 62 mm	LED based homogeneous background lighting, 62 x 62 mm	LED based background lighting, Ø 20 mm
Field of view (Ø, mm)	1.44…45.3	1.44…32.3	2.9…12
Measurement indicator LED	√	√	-
Integrated touch display	√	-	-
Environment monitoring	√	-	-
Disposable tip dispensing	√	√	√
Software	OneAttension, includes all measurement modes	OneAttension, includes all measurement modes	OneAttension, includes all measurement modes
Dimensions — Basic frame (L×W×H, mm)	765 x 230 x 435	765 x 230 x 435	495 x 130 x 310
Weight — Basic frame (kg)	29	26	5
Power supply (VAC)	100...240	100...240	100…240
Frequency (Hz)	50...60	50...60	50 ... 60

Theta Flow

Theta Flex

Available Measurements

Static contact angle and captive bubble

√

Batch contact angle

√

Dynamic contact angle

√

Meniscus contact angle

√

Surface/Interfacial tension

√

3D surface roughness and roughness-corrected contact angle

√

-

Interfacial rheology

√

-

Surface free energy

Zisman Plot, OWRK/Extended Fowkes, van Oss Acid-Base, Wu, Neumann’s Equation of State, Schultz 1 and 2

Software and hardware

Measuring range (°, mN/m)

0…180, 0.01…2000

Accuracy (°, mN/m)

±0.1, ±0.01

Maximum sample size (mm)

Unlimited×100×320

Unlimited×100×320 (with stage)

Unlimited×45×200 (with stage)

Integrated sample holders

√

Maximum resolution (px)

2592 x 2048 (5 MP)

1984 × 1264 (2.3 MP)

1280 × 1024 (1.3 MP)

Maximum measuring speed (fps)

3422

3009

2068

Camera

CMOS 1'' USB 3.0 digital camera with zoom

CMOS 2/3'' USB 3.0 digital camera with zoom

CMOS 1/2'' USB 3.0 digital camera with fixed zoom

Image focusing

Software-controlled autofocus, manual fine focus in optics

Manual fine focus in optics

Manual fine focus by optical rail

Image quality

Enhanced with DropletPlus technology, Native

Native

Camera protection

Inside instrument covers

Camera view angle (°)

-4 ... 2.5, with digital scale

-4.5 ... 2.5, with mechanical scale

-2 ... 2

Light source and size

LED based homogeneous background lighting, 62 x 62 mm

LED based background lighting, Ø 20 mm

Field of view (Ø, mm)

1.44…45.3

1.44…32.3

2.9…12

Measurement indicator LED

√

-

Integrated touch display

√

-

Environment monitoring

√

-

Disposable tip dispensing

√

Software

OneAttension, includes all measurement modes

Dimensions — Basic frame (L×W×H, mm)

765 x 230 x 435

495 x 130 x 310

Weight — Basic frame (kg)

Power supply (VAC)

100...240

100…240

Frequency (Hz)

50...60

50 ... 60

	Dispenser	Droplet placement	Sample stage	Camera	Possible upgrades
Theta Flex Auto 5	Auto, 4 liquids	Auto	Auto XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Auto 4	Auto, 2 liquids	Auto	Auto XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Auto 3	Auto, 1 liquid	Auto	Auto XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Auto 2	Auto, 2 liquids	Auto	Auto X, Manual YZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Auto 1	Auto, 1 liquid	Auto	Manual XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Plus	Auto, 1 liquid	Manual	Manual XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Flex Basic	Manual	Manual	Manual XYZ	1984 × 1264 px, max 3009 FPS	Full
Theta Lite Auto 2	Auto, 2 liquids	Manual	Manual YZ	1280 x 1024 px, max 2068 FPS	Limited
Theta Lite Auto 1	Auto, 1 liquid	Manual	Manual YZ	1280 x 1024 px, max 2068 FPS	Limited
Theta Lite Basic	Manual	Manual	Manual YZ	1280 x 1024 px, max 2068 FPS	Limited

Dispenser

Droplet placement

Sample stage

Camera

Possible upgrades

Theta Flex Auto 5

Auto, 4 liquids

Auto

Auto XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Auto 4

Auto, 2 liquids

Auto

Auto XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Auto 3

Auto, 1 liquid

Auto

Auto XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Auto 2

Auto, 2 liquids

Auto

Auto X, Manual YZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Auto 1

Auto, 1 liquid

Auto

Manual XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Plus

Auto, 1 liquid

Manual

Manual XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Flex Basic

Manual

Manual XYZ

1984 × 1264 px, max 3009 FPS

Full

Theta Lite Auto 2

Auto, 2 liquids

Manual

Manual YZ

1280 x 1024 px, max 2068 FPS

Limited

Theta Lite Auto 1

Auto, 1 liquid

Manual

Manual YZ

1280 x 1024 px, max 2068 FPS

Limited

Theta Lite Basic

Manual

Manual YZ

1280 x 1024 px, max 2068 FPS

Limited

OneAttension Features

User friendly interface
To get you going in no time
Fully automatic dynamic contact angle mode with the needle method
For user independent results
Automatic baseline detection and drop shape fitting
For simplicity and precision
Batch angle mode
When you have plenty of tests to run in no time
Meniscus contact angle mode
When you are finding out the contact angle of fibers
Automated liquid purity checkup
So you can trust your results

Terry Qian, GSM, Apple

"I’m satisfied with Biolin Scientific customer service, quick response, efficient on-site support to setup the instrument and train end user on how to handle the machine properly. In especially urgent cases, Biolin Scientific always try to allocate resources to fulfill Apple needs. I really appreciate it."