Holmarc’s Contact angle meter Model no: HO-IAD-CAM-01B is an advanced model with automated dispenser, rotatable substrate holder and temperature control. Additional feature from the Model: HO-IAD-CAM-01A is that this model is equipped with temperature control for the substrate holder (up to 100 degree Celsius from ambient). This proves to be ideal for the study of contact angle variations with respect to temperature. Video capturing and video image processing features are included in Holmarc Contact angle analysis software. The surface over which contact angle is to be measured can be rotated through 180 degree from its horizontal position for advanced contact angle studies and to find out contact angle hysteresis.
State-of-the-art optics, precise opto-mechanics, high-resolution CMOS detector and associated electronics used in our instrument guarantee stable and accurate measurements. The illumination intensity of the back light LED can be controlled using the software. The flow rate and volume to be dispensed can be controlled from the software. Three chromatographic syringes with 50 micro litre, 100 micro litre and 250 micro litre capacity are supplied along with the equipment. Standard off the shelf syringes can be integrated from 0.4 to 20 ml, from any manufacturer. The equipment is compatible with glass, plastic and SS syringes.
| Measuring method | : | Sessile drop method |
| Analysis method | : | Automatic curve fit analysis using drop snake method. |
| Optics | : | High performance aberration corrected imaging lens with precise manual focus adjustment. |
| Camera type | : | CMOS Sensor |
| Image Resolution in Pixels | : | 2592 x 1944 (Max) |
| Video system | : | High performance CMOS Sensor. 3m shielded USB cable included. |
| Video Resolution in Pixels | : | 640 x 480 at 17 fps , 1280 x 960 at 10 fps |
| 1920 x 1080 at 9 fps , 2048 x 1536 at 6 fps | ||
| 2592 x 1944 at 4 fps | ||
| Lighting | : | LED Based diffused lighting mechanism. |
| Dispenser | : | Mechanical & Motorized dispenser. |
| Dimension | : | 500 x 400 x 498 mm |
| Weight | : | 35 kg (approx) |
| Power supply | : | 230VAC, 50 Hz. / 110V AC, 60Hz (Optional) |
| Test base temperature | : | Ambient to 100°C |
| Other specifications | : | 30 mm height adjustment for Sample holder. |
| 180 degree rotation for the Sample Holder. | ||
| 75mm XY Travel provided for the CMOS - Optics assembly. | ||
| Rotatable screws provided beneath the base for levelling purpose. | ||
| # Laptop is not in scope of supply | ||
1. White light LED with variable intensity control ensures extreme low heat radiation.
2. Precise travel adjustment provided for CMOS with Optics assembly to fine focus the image.
3. Manual and motorized syringe pump for precise micro litre dispensing.
4. 50, 100 & 250 micro litre sample syringes provided with the system.
5. Precision height adjustment and angular displacement provided at the test base.
6. Vibration inhibiting solid construction for sharp drop images.
7. Powerful and user friendly windows software provided for image analysis.
8. Live images can be viewed on the PC monitor showing the droplet on the solid surface reassures the operator - regarding validity of the contact angle measurement.
9. Substrate can be rotated 180 degree from horizontal position.
10. Captured image and its Angle measurement table can be saved for future reference.
Contact angle is the angle formed by a liquid at the phase boundary where a liquid, gas and solid intersect. The shape of the drop is controlled by the three forces of interfacial tension. Static Angle and Advancing Angle are quantitative measures of the wetting of a solid by the liquid, but they can also be used as a quality control measure in surface treatments and surface cleanliness. Receding Angle is a quantitative measure of the adhesion of a solid to a liquid.
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