DSA25 Contact Angle Meter

 

ACCESSORIES

 

PS3244 – Manual micro positioning table

 

PS3244 – Manual micro positioning table

The sample table PS3244 is designed for the ultra-precise positioning of small samples. Manual fine drives for the x- and y-direction enable the table to be moved to the required measuring position with pinpoint accuracy. Samples with heights up to 2 mm can be securely fixed using the versatile, attachable sample holder.

ST10 – Set for measuring contact angle in bulk liquid

ST10 – Set for measuring contact angle in bulk liquid

We have developed the sample holder and dosing set ST10 for measuring contact angle in a bulk liquid phase. Gas bubbles (Captive Bubble) or drops are dosed beneath the sample with the help of the set’s special needle and cuvette, e.g. for analyzing hydrogels and highly energetic and structured surfaces. The special holders optimize measurements on contact lenses, films and textiles as well as on rigid samples.

ST01 – Suction table for soft, flexible samples (foils, films)

ST01 – Suction table for soft, flexible samples (foils, films)

The suction table ST01 ensures that a smooth, flat surface is achieved with foils, films and similar samples. This guarantees a reliable and precise measurement of the contact angle on such soft, flexible materials. The wide area of 100 × 100 mm creates space for a large number of dosed drops. A vacuum pump, which is required for operating the table, can be obtained from us.

VP01 – Vacuum pump

VP01A – Vacuum pump

  • Degassing of liquids for picoliter dosing units or for interfacial rheology to prevent the formation of troublesome air bubbles (with additional connector set SP01)
  • Removal of dosed drops when measuring contact angle to enable several positions along the optical axis to be analyzed (with additional connector set SP01)
  • Flushing the tiny dosing opening of picoliter dosing units (with additional connector set SP01)
  • Producing the vacuum for fixing foils and films for the suction table ST01
  • Use of the vacuum for the filter base cleaning tool TO4501 for the Dynamic Foam Analyzer – DFA100

ST03 – Powder sample holder for optical contact angle measurements

ST03 – Powder sample holder for optical contact angle measurements

The powder sample holder ST03 is a sample table adapter with three depressions for measuring the contact angle on powder beds. The depressions are filled with powder which is then smoothed out resulting in flat surfaces for dosing liquids. The three separate areas enable at least three positions to be analyzed without being affected by adjacent drops, even in the case of absorbent powders. Please also refer to the alternative Washburn-Method for powder contact angle with our Force Tensiometer – K100.

ST04 – Sample holder for foils and paper

ST04 – Sample holder for foils and paper

We have designed the special sample holder ST04 for measuring contact angle on foils and paper. The clamping device ensures an ideally smooth, flat surface, even with corrugated and rolled samples. The holder takes samples with a surface area of 80 × 80 mm and a thickness of up to 4 mm.

ST08 – Holder for uneven samples

ST08 – Holder for uneven samples

When measuring the contact angle on uneven samples, dosing must be carried out on a raised point in order to obtain an analyzable shadow image of the drop. For this purpose, the sample table adapter ST08 has a domed shape, over which the samples are tightened with the help of a magnetic clamping device. Combining with horizontal axes enables several measurements to be made in quick succession by dosing accurately along the crest.

SY20 – 500 µL glass syringe with Luer-Lock connector

SY20 – 500 µL glass syringe with Luer-Lock connector

The precision glass syringe SY20 is used for our manual dosing unit DS3205 or software-controlled dosing units D03211/DO4011 for one liquid. The gas-tightness of the syringe plunger and the Luer-Lock connector ensure that drops are dosed in a controlled manner even with low-viscosity liquids.

SY3601 – Disposable 1 mL syringe with Luer connector (100 pieces)

SY3601 – Disposable 1 mL syringe with Luer connector

The syringe SY3601 can be fitted to many of our manual and software-controlled dosing solutions and can be used for almost all liquids. It is particularly suitable for dosing highly contaminating substances such as adhesives or paints. The Luer connector ensures safe, gas-tight connections to needles and other dosing components. The syringe is supplied in sets of 100.

NE94 – Set of disposable needles for contact angle and pendant drop

NE94 – Set of disposable needles for contact angle and pendant drop

The needle assortment NE94 provides a range of suitable needles for measuring contact angle as well as surface and interfacial tension (SFT/IFT) using the Pendant Drop method.

  • 5 steel needles with 1.8 mm diameter (SFT/IFT)
  • 5 steel needles with 0.5 mm diameter (contact angle)
  • 5 PTFE needles with 2.0 mm diameter (SFT/IFT)
  • 5 PTFE needles with 1.0 mm diameter (SFT/IFT)
  • 5 PTFE needles with 0.5 mm diameter (contact angle)
  • 5 PP needles (flexible syringe) with 0.7 mm diameter (contact angle)

NE97 – Needle set for measurements on rising air bubbles or drops

NE97 – Needle set for measurements on rising air bubbles or drops

The set NE97 with three J-shaped needles has been put together especially for measurements with the Captive Bubble method and with rising drops. The 0.5 mm diameter needle enables highly energetic, structured or pre-wetted surfaces (e.g. contact lenses) to be analyzed. With two further needles (1.0 and 2.0 mm), the interfacial tension can be measured on rising drops. This enables systems such as crude oil/water, in which the lighter phase is not transparent, to be analyzed optically.

NE50 – Needle for dosing small volumes

NE50 – Needle for dosing small volumes

The needle NE50 with 5 µm internal diameter has been designed for the manual dosing of small volumes below the microliter range. The water-repellent surface lets drops detach easily from the needle and allows to place them accurately in the required position on your sample. Please also see our accessories for dosing drops in the picoliter range and the analysis of minute probes using microscope lenses.

TC11 - Tempering chamber for large samples

TC11 - Tempering chamber for large samples

The tempering chamber TC11 has been specially developed for measuring the contact angle on large samples at temperatures of up to 130°C.

  • For sample sizes up to 132 × 132 × 27 mm (W × D × H)
  • Precision temperature sensor included
  • Connector for measurements under inert gas provided
  • Tempering between -10°C and 130°C (suitable thermostats are available from us)

TC21 – Tempering chamber for high temperatures

TC21 – Tempering chamber for high temperatures

The temperature chamber TC21 enables liquid and solid surfaces to be analyzed at temperatures up to 400°C. The target temperature is easy to specify and is reliably achieved at defined heating rates

  • Electrical, controlled tempering between 50°C and 400°C
  • Precision temperature sensor included
  • Ideal in combination with the high-temperature dosing unit DS3241/DS4241

TC30 – Tempering chamber up to 90°C

TC30 – Tempering chamber up to 90°C

The wettability of solid samples can be reliably analyzed at temperatures up to 90°C with the help of the tempering chamber TC30.

  • Temperature range between 5°C and 90°C (suitable thermostats are available from us)
  • Precision temperature sensor included
  • Inert gas connector provided
  • Can be ideally combined with the humidity chamber HC10

TC40 - Tempering chamber for rapid temperature changes

TC40 - Tempering chamber for rapid temperature changes

With rapid temperature changes between -30°C and 160°C, the tempering chamber TC40 is our flexible solution for wettability analyses under different thermal conditions.

  • Fast electrical tempering between -30°C and 160°C
  • Precision temperature sensor included
  • Liquid counter-cooling (suitable thermostats are available from us)
  • Inert gas connector provided
  • Can be combined with the humidity chamber HC10 between 5°C and 90°C

TC3212 – Tempering unit for liquids

TC3212 – Tempering unit for liquids

The unit TC3212 tempers liquids for measuring contact angle or surface tension at up to 130°C. Embedded in a heat-conducting metal sleeve, the filled syringe quickly reaches the desired temperature.

  • Temperature range -10°C to 130°C (suitable thermostats are available from us)
  • Precision temperature sensor included
  • Also suitable in combination with tempering chambers TC11, TC30 and TC40

SC30 – Glass cuvette for temperature-controlled measurement of interfacial tension

SC30 – Glass cuvette for temperature-controlled measurement of interfacial tension

We have designed the glass cuvette SC30 for tempering the bulk phase at up to 130°C when using the Pendant-Drop Method. The high-quality optical glass ensures distortion-free imaging of the drop and therefore accurate measuring results.

  • Temperature range -10°C to 130°C. (Suitable thermostats are available from us.)
  • With insulating cover and opening for a temperature sensor (available from us)

 

TP20 – Temperature sensor

TP20 – Temperature Sensor

The TP20 is a highly accurate temperature sensor which can be used flexibly with your instrument. Thanks to the large measuring range between -50°C and 400°C at 0.1°C precision, it measures room temperature just as reliably as the working temperature of our tempering accessories. Measurement is carried out immediately at the sensor tip, thus reproducing the actual conditions directly at the solid or in the liquid sample. Our software links the temperature to the current analysis results.

CP21/CP22 – Sets of contact angle standards for the height-width method

CP21/CP22 – Sets of contact angle standards for the height-width method

The sets CP21 and CP22 each contain standards with shapes of exactly circular drops for calibrating the height-width method and the circle method for measuring the contact angle. The shapes with contact angles of 30°, 60° and 120° deviate by less than 0.1° from the nominal value. The set CP22 additionally includes a certificate which confirms the high accuracy of the print.

CP23/CP24 – Sets of contact angle standards for the Young-Laplace method

CP23/CP24 – Sets of contact angle standards for the Young-Laplace method

The sets CP23 and CP24 each contain standards with shapes which accurately follow the theoretical drop shape according to Young-Laplace. The standards are used to calibrate the Young-Laplace method for measuring the contact angle. The shapes with contact angles of 30°, 60° and 120° deviate by less than 0.1° from the nominal value. The set CP24 additionally includes a certificate which confirms the high accuracy of the print.

CP25/CP26 – Sets of pendant drop standards for the Young-Laplace method

CP25/CP26 – Sets of pendant drop standards for the Young-Laplace method

The sets CP25 and CP26 are used for calibrating the Pendant Drop method for measuring the surface tension (SFT). The printed shapes of pendant drops exactly follow the theoretical drop shape according to Young-Laplace for SFT values of 20 mN/m and 50 mN/m. The deviation from the nominal value is less than 0.01 mN/m. The set CP26 additionally includes a certificate which confirms the high accuracy of the print.

CP29/CP33 – Standards for small contact angles with the circle method

CP29/CP33 – Standards for small contact angles with the circle method

The standards CP29 and CP33 are designed for calibrating the circle method for measuring contact angles in the lower range of this method. The printed shape with a contact angle of 10° is exactly circular. The deviation from the nominal value is less than 0.1°. The standard CP33 is supplied with an additional certificate which confirms the high accuracy of the print.

TVA100 - Module for measuring contact angle using the top view distance method

TVA100 - Module for measuring contact angle using the top-view distance method

The TVA100 module equips your instrument for carrying out surface analyses using the top view distance method. The measuring head’s precision dosing feature produces a drop with defined volume.

The following are included in the scope of supply:

  • Precision dosing unit for producing accurate drop volumes
  • High-quality optical components and high-resolution camera
  • Pre-prepared measuring procedures in the software for rapid results

 

CP31 – Calibration set for the Top View Analyzer – TVA10

CP31 – Calibration set for the Top View Analyzer – TVA100

The calibration set CP31 comprises stainless steel balls with accurately defined radii and a correspondingly accurate surface curvature. The balls serve as models for spherically curved drop surfaces for checking  the reliability of the optical contact angle measurement using the top-view distance method. The 8 balls in the set cover the whole measuring range of the TVA100 in fine increments.

NE49 – Pipette tips for the dosing unit of the Top View Analyzer – TVA100

NE49 – Pipette tips for the dosing unit of the Top View Analyzer – TVA100

The dosing accessory NE49 contains 96 pipette tips for dosing highly accurate volumes for measuring the contact angle using the top view distance method.

Product Detail