Sunday, July 24, 2022

High Pressure High Temperature Rotating Cylinder Electrode (RCE) Kulim Kht Cortest Incp.

 




RCE Autoclaves 

Cortest autoclave systems are used for high pressure and high temperature (HPHT) test applications including: corrosion testing, electrochemical studies, corrosion inhibitor analysis, shear stress analysis, slow strain rate testing, and more. When paired with one of our Magnetic Stirrers or Circulating Flow Loop Systems, our Autoclaves may be used for dynamic testing applications.

Cortest has been building safe and reliable autoclave systems for over 40 years and offers standard system designs as well as custom configurations to meet the most demanding of applications. Each pressure vessel is designed in accordance to the ASME Section VIII Div. 1 standard. PED, CSA, CE, DOSH

Thursday, April 21, 2022

Kulim Kht ACM Pot 24 with 8 variable potentials, each controlling a group of 3 channels

 

Pot 24 with 8 variable potentials, each controlling a group of 3 channels

Long term testing at fixed potentials is vital in many branches of corrosion, coatings, cathodic protection and electrochemistry. The Pot 16 offers 16 individual potentiostats (number of channels can be determined by your needs). Each channel has a fixed current measurement range, selected on purchase for the type of testing to be performed. The standard range is 350mA with a resolution of 5µA.

Output potential can either be fixed, selected by a 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 3.5V, 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). Please specify which standards you require when quoting. We will ensure your Pot 16 complies.

A single dialled knob is fitted as standard, to allow a wide range of potentials to be selected for all channels. Additional dialled knobs may be specified to allow different potentials on groups of channels. In some cases a variable potential is not desirable, in which case, switches may be specified to allow selection between fixed potentials e.g. -1.5V & -3.5V.

Alternatively up to 4 fixed potentials may be ordered and allocated between the 16 channels at no extra cost. For example channels 1 to 8 could be set to -1.5V, channels 9 to 11 set to -3V, channel 12 to 14 set to -3.5V and 15 to 16 set at -4V. These potentials are set on internal 25 turn trimming potentiometers.

To increase the value of these tests both current and voltage are monitored and stored using very high accuracy internal voltmeters. The voltage should stay constant at the set potential but if this is not the case it is usually an indication of problems with the cell (for example a bubble in the Luggin probe).

The Pot 16 can easily be customised to the customers specifications. Higher current output, more channels, less channels, waterproof enclosure, alternative connectors and battery powered option are all possible. The Pot 16 is infinitely variable. It is designed to accommodate the needs and specifications of the end user.

Standards:

  • ASTM G8, G42, G80, G95 and their variants
  • AWWA C-210, API RP 5L7
  • CSA Z-245.20-02 and Z245.21-02
  • BS EN10289 : 2000(E)
  • ISO15711 Method A & B
  • ISO-21809-2 and ISO-21809-3
  • NACE RP0394
  • Shell DEP 31.40.30.31-Gen and Shell DEP 31.40.30.32-Gen
  • DIN 30 671 (1987)
  • NF A49-711, NF A49-716
  • 09-SAMSS-089 ARAMCO
  • GBE/CW6:Part 1 and BGC-PS-CW6:Part 1
  • ARCO China
  • AS-3862, AS/NZS4352:1995 Method A & B. (Pot 16 with Galvanostat option or Gal 16 Only)

Tuesday, October 6, 2020

Ring Du Noüy ring Measurement Kulim Kht

 


Optional platinum/iridium ring is supplied in a protective transport case. The ring should be cleaned regularly after use and treated carefully to avoid deformation. Dimensions: R (ring) = 9.58 mm, r (wire)= 0.185mm. A good way to store the ring is to immerse it in ethanol by first hanging it on a hook attached to a lid, which is then attached to a beaker filled half-full with ethanol. Then before using the ring again flush it with pure ethanol and water, or burn it with a Bunsen burner (ca. 1000 oC flame) for a short time (glowing yellow-red for a few seconds). In this way the ring will keep its form better and will not deform as easily as by putting it back to the wooden box after each measurement. The ring that is used must have R/r ratios of around 52 or 26. This is because when the Du Noüy ring is used, a correction factor has to be applied. The software includes correction factor for rings with R/r of 52 or 26. You can read more about the correction in the Theory section of this manual. 

Monday, October 5, 2020

Contact Angle Tilting stage Kulim Kht





 Manual tilting stage Manual tilting stage enables the study of dynamic contact angle i.e. advancing and receding contact angles. Manual tilting stage is attached to  similarly as standard sample stage.

Solar Contact Angle Measurement Kulim Kht






 Solar cell research and development is an active field and the efficiency of the solar cells is constantly increasing. Contact angle measurements can be utilized in many stages of solar cell research and solar panel manufacturing as well as in quality control of solar cells. Anti-reflective coatings are used in all solar panels to improve efficiency and lifetime of the solar cells. Study of the surface properties of these coatings is commonly done by using contact angle measurements. Ready solar panels are often too large to be fitted into a laboratory contact angle instrument.  is a great tool for quality control and testing of solar panels due to its portability and unlimited sample size.