Kulim Kht smartphone-based contact angle measurement instrument

 Conducting experiments to measure both static and dynamic

 (advancing and receding) contact angles

In this study, a smartphone-based contact angle measurement instrument was developed. Compared with the traditional measurement instruments, this instrument has the advantage of simplicity, compact size, and portability. An automatic contact point detection algorithm was developed to allow the instrument to correctly detect the drop contact points. Two different contact angle calculation methods, Young-Laplace and polynomial fitting methods, were implemented in this instrument. The performance of this instrument was tested first with ideal synthetic drop profiles. It was shown that the accuracy of the new system with ideal synthetic drop profiles can reach 0.01% with both Young-Laplace and polynomial fitting methods. Conducting experiments to measure both static and dynamic (advancing and receding) contact angles with the developed instrument, we found that the smartphone-based instrument can provide accurate and practical measurement results as the traditional commercial instruments. The successful demonstration of use of a smartphone (mobile phone) to conduct contact angle measurement is a significant advancement in the field as it breaks the dominate mold of use of a computer and a bench bound setup for such systems since their appearance in 1980s

Electrochemical Cell Set Kulim Kht ACM Bubble Test Set up

 

Electrochemical Cell Kit

The 1 Litre Quickfit type Electrochemical Cell is supplied with the following: Sealed 1 Litre Reaction Vessel; Platinum Band Type Auxiliary Electrode; Saturated Calomel Reference Electrode; Reservoir; Luggin Probe with Tubing; Platinum Mains Noise Reduction Electrode; Retort Stand; 0-105°C Thermometer; Glass Frit; Exhaust and a two Electrode Probe. The retractable probe fits in the centre of the cell and accommodates two standard 4.75cm2 screw on electrodes for galvanic C&V noise or 2 electrode LPR studies. The access hole in the centre of the cell which is normally used for the 2 electrode probe is supplied with an adapter for fitting of other probe types to suit your requirements. The adapter supplied with the Luggin probe can be removed in order to directly place the reference electrode into the cell.

Potentiostat Kulim Kht ACM Pot 16 ISO

DESCRIPTION 

 Isolated Pot 16 has the same specifications as the Pot 16, but each channel is isolated allowing samples to be in the same electrolyte. Fixed potentials for parallel potentiostatic tests. This instrument provides 16 potentiostats for long term testing of electrodes at a fixed potential.

 Each channel has a fixed current measurement range, selected on purchase for the type of testing to be performed. The standard range is 350 mA with a resolution of 5 micro Amps. Output potential can either be fixed, selected by a two, three or four position switch, or variable via a 10-turn dialled knob. Extra optional potential selectors may be added and channels grouped. 

Typical configurations would be all channels set by a two position switch selecting 1.5V or 3V, or channels 1-8 set from -5V to +5V via a 10 turn dialled knob and channels 9-16 set by their own dialled knob. Most standard cathodic disbondment tests (e.g. ISO15711, or ASTM G8, G42, G80, G95 or CSA Z-245) require 1.05V, 1.5V, 3V or 3.5V; however a galvanostat option can be added for the 3mA Australian and New Zealand standards (AS-3862, AS/NZS4352). 

 Measurement of the current flowing from each potentiostat and the voltage between RE and WE (as a check on operation) is performed by a pair of 24 bit converters, running at a maximum read rate of 4 channels per second. 

 The software supplied allows for simple set up of data filename and read rate and displays the latest data recorded. The data is stored on the PCs hard disc as the test progresses. In the event of a power cut the data will be added to the earlier data on resumption of the power supply. An example of the use of a Pot 16 is in performing tests on coated steel to study the likelihood of cathodic disbondment at a fixed potential. A dedicated and powerful instrument offering very cost effective fixed potentiostats for long term measurement. 

Kulim Kht ACM Weld Tester ZRA

 Weld Tester   

With five independent ZRAs a weld tester is the ideal instrument when testing segmented or mixed metal systems. A full range of AC and DC techniques are included for simultaneous testing of all 5 ZRAs. Each ZRA has the same frequency response, count resistor ranges and power as a standard Gill AC ZRA.

Software Overview 

At the heart of an ACM system is a Sequencer and Core Running application, now into Version 5 the emphasis is on reliability. Working in unison, Sequencer setups up a sequence of techniques and Core Running collects data from a sequence of techniques. The Sequencer was designed to be easy to use, with an intuitive interface, one that is common across the range from Data Collection to Analysis; learning effort is kept to a minimum.

Kulim Kht CMC Surfactant analysis Easy

Contact Angle meter, Modern Goniometer Kulim Kht

Optical Tensiometers are used in research, development and quality control for the study of surfaces and interfaces. They will help you to characterize surfaces easily and precisely, saving valuable time and money. Then Optical Tensiometers support a wide range of applications from advanced research to quick quality control. Thanks to the versatility, you can get the combination of features that best fits your needs

Measurements • Static contact angle • Dynamic contact angle • Roll-off angle • Surface free energy (SFE) • Surface tension • Interfacial tension • Batch contact angle • Roughness corrected contact angle • Interfacial rheology (viscoelasticity)