Gationode GATionode-IJ48 New Generation  

 

GATionode
unique in the world !

 
Makes your life in the laboratory easier!

     The plastic sleeve of the IJ makes pH measurement easier
     No conventional ceramic or wick junction means: no clogging, no drying, easy cleaning
     Every IJ is a double junction electrode
     Responds quickly from a dried condition
     With and without Tempsensor

This unique design feature and easy handling provide high quality and reproduceable pH data for liquid, semisolid and nonideal samples. Quick response, long life and the option of temperature correction are added bonuses.

The GATionode® IJ consists of upper and lower electrolyte chambers joined by a porous wick which does not contact the sample. The upper chamber is gel filled and separated from the sample by a slightly flexible plastic sleeve which contains the lower sleeve electrolyte. The sleeve electrolyte is static and movement of ions into the sample is by diffusion only. The sleeve slides along the glass pH stem and can easily be removed for cleaning, a process taking only seconds.

GATionode® - Electrodes

Shortcomings in conventional
electrode design belong to the past!
The most common problem affecting the accuracy and reproducibility of potentiometric measurements is the contamination of the contact zone between the reference electrolyte and the sample. Conventional electrodes rely on a constant flow of reference through a porous constriction to ensure a clean contact zone.
Non-ideal samples e.g. low buffer capacity, samples containing oils, fats, proteins or suspended solids, or extreme pH´s may produce residual potentials due to a contaminated contact zone. This can be obscured with the usual buffer calibration. Conventional gel references can also be expected to develop very significant errors in non-ideal samples. The age and condition of the glass membrane may also affect the electrode performance by decreasing the slope and increasing the response time.

 

Is your present pH electrode reliable?
With this simple test you can check the performance of your pH electrode.

                         1. Calibrate with NBS Buffer 6.86 at 25°C
                         2. Set slope with Buffer pH 4.01.
                         3. Dilute 1 part of Buffer 6.86 with 9 parts distilled water.

You should obtain 7,06      0,02.

If not, you should order the new GATionode® Intermediate Junction Electrode with or without temperature probe.


Why a GATionode® IJ ?
Because the most difficult of samples is measured with ease, accuracy and reliability by using an electrode of advanced design. Not convinced, then check the following characteristics:

 

Accurate
rugged                             maintenance friendly
No lengthy wetting.
  		The special formulation membrane glass allows a „dry“ storage. Yet, the electrode is ready to use anytime.
 
Practically no calibration for routine measurements.
  		A main reason for inaccurate electrochemical measurment is contamination of the reference electrode. The routine exchange of the bridge electrolyte eliminates this problem.
 
No silver precipitation in the diaphragm for de-ionized water, sulphide containing liquors or „Tris“ buffer.
  		A bridge with potassium chloride free of silver ions eliminates this known interference.
 
Stable junction potentials with samples containing suspended matter, emulsions, and water with low conductivity.
  		The IJ contains a special ground sleeve diaphragm.
This minimizes spurious junction potentials at the contact zone.
 
Optimal measurements in concentrated acids and bases.
  		A special composition membrane has low alkali error and high acid resistance.
 
Measure in soils, meats, fruits and vegetables.
  		Alternative sleeve design of the permits penetration measurements.
 
Use in beverages such as beer.
  		Vary the reference electrolyte to suit the sample
 
No disturbing memory effects.
  		The combination of a ground sleeve diaphragm with an occasional exchange of the bridge electrolyte prevent deviations in measurements by memory effects.
 
Measurements of small samples.
  		0.25ml of sample is sufficient with a special cup.
 
Easy cleaning of all parts in contact with non-ideal samples (oil, fats, proteins etc).
  		Easily removable sleeve permits cleaning of the membrane and reference contact zone.
 
Measurements in the field.
  		Rugged protective feet on the sleeve protect the membrane during field use.
 
No stirring effects allow measurements in flowing streams e.g. on-line.
Co-axial junction reduces streaming potentials. 
 
Fast response time.
  		Special membrane glass responds rapidly to change in pH.

 

NEW !
 from
R + D

...for online pH-measurement

  Now the new GATionode® IJ44 (screw in version)
...for the determination of other
ions we recommend the ion
selective electrodes GAT IS.

Parts List of IJ electrodes
pH and reference electrodes come with or without optional built-in temperature sensors. The temperature sensor must be compatible with the meter.

1) ph/Reference/Redox Electrode Body
2) Protective Reference Sleeve
3) 3.5M KCI Gel Reference Electrolyte
4) Slim Line reference Sleeve
5) Small Volume Sample Cup
6) Slim Line Wetting Cap
7) Protective wetting Cap
8) Injector
additionally ph handbook incl. Manual (no fig.)

Compatibility of IJ electrodes
The electrodes are provided with DIN or BNC connectors. The standard cable length is 1m; Cable of customs length are available to order.

Drowning in pH and redox problems?
The New GATionode® IH(Integral Housing) electrodes provide an answer!

•      Fully waterproof
•      Submersible
•      Long term stability
•      Easy cleaning
•      Low ionic strength samples
•      Sealed-in batch number
Applications:
Hydroponics, Aquaculture, Oceanography, Environmental, On-Line process – for relatively clear solutions (for other applications use Intermediate Junction (IJ) electrodes), general laboratory use – (clean samples only), swimming pools.
The GATionode® IH is available as pH-electrode GAT IH 20 (0-14pH) and redox-electrode GAT IH 30. Temperature Range: 0-60°C at max. 500 KPa. Cable length: 1 m without head amplifier. Connectors: BNC or DIN as standard connector. Other on request.

 


Please inquire for further applications

Consultancy, Accessories and Service

Our many yearŽs experience in the development, usage and servicing of analysis instruments enables us to provide direct hands-on advice concerning our applications and we are also your reliable partners in the field of accessories, service and repairs..

Just get in touch and weŽll get you moving!

 

Do you have any further questions ?
electrodes@gatgmbh.com

You can also download this information   in format    save on your hard-drive
and print afterwards
please press the rigth mouse-button, target save as ...

 

Gationode GATionode-IJ48 New Generation