YSI IoLine Micro 3 in 1 Electrochemical Electrode User Manual

YSI IoLine Micro 3 in 1 Electrochemical Electrode

IoLine – 3 in 1
IoLine Micro – 3 in 1

For the most recent version of the manual, please visit www.ysi.com.

Contact
YSI 1725 Brannum Lane
Yellow Springs, OH 45387 USA Tel: +1 937-767-7241
800-765-4974
Email: environmental@ysi.com
Internet: www.ysi.com 

Copyright © 2014 Xylem Inc.

Technical data

General data

Model| Reference electrolyte| Junction| NTC| Special features
---|---|---|---|---
IoLine – 3 in 1| KCl 3 mol/l, Ag+ free| Platinum| Yes| Iodine/Iodide reference systeme
IoLine Micro – 3 in 1| KCl 3 mol/l, Ag+ free| Platinum| Yes| Iodine/Iodide reference systeme

Measurement and application characteristics

Model| pH measuring range| Allowed temperature| Membrane resistance at 25 °C| Typical application
---|---|---|---|---
IoLine – 3 in 1| 0 … 14| -5 … 100 °C

23 … 212 °F

| < 200 MOhm| Measurement in tris buffers
IoLine Micro – 3 in 1| 0 … 14| -5 … 100 °C

23 … 212 °F

| < 400 MOhm| Measurement in tris buffers

Shaft dimensions, shaft material, electrical connection

Commissioning, measuring, calibration

Commissioning

Commissioning, measuring, calibration
The combination electrodes except the Micro are delivered with an irrigation cap. The irrigation cap can also be used as storage equipment between measurements. Due to its small pipe diameter, the micro model is stored in a screw-top glass pipe. The electrodes are filled with reference electrolyte solution in the factory. Prepare the combination electrode for measuring as follows:

• The closure of the refilling opening consists of a slide. Open the refilling opening for the reference electrolyte solution.
  The refilling opening must always be open during calibration and measurement!

• The bridge electrolyte (3 mol/1 KCI) that fills the item during delivery can be replaced as needed with an electrolyte solution that matches the sample. For a stabile measurement, the conductivity of the individual bridge electrolyte should be at least 10 mS/cm.

•  The colored, iodine electrolyte solutions of the IoLine electrodes are inside a closed system and must therefore not be refilled. You must make sure that the bridge electrolyte is free of silver ions.

Note
The bridge electrolyte must be free of silver ions.

•  Connect the combination electrode to the meter

•  Calibrate the combination electrode according to the operating manual of the meter. When doing so, observe the general rules on the following page.

•  Make sure the refilling opening for the reference electrolyte solution is open.

• Avoid the displacement of any solution (sample or buffer solution) from one measurement to the next by taking the following measures:
  – Shortly rinse the calibration and sample beakers with the solution the beakers are to be filled with next.
  – Between measurements, rinse the combination electrode with the solution that follows. Alternatively, you can also rinse the combination electrode with deionized water and then carefully dab it dry.

•  Immerse the combination electrode in the solution in a vertical or slightly tilted position.

•  Make sure the immersion depth is correct. The junction must be completely submersed in the solution. At the same time, the level of the reference electrolyte must be at least 2 cm above the level of the solution.

• Provide approximately the same stirring conditions for measuring as for calibrating.

The frequency of subsequent calibrations depends on the application. Many meters provide an option where you can enter a calibration interval. After the calibration interval has expired, the meter will automatically remind you of the due calibration.

Storage

With the refilling opening open, immerse the combination electrode in
in reference electrolyte (KCl 3 mol/L, Ag+ free). Observe the minimum depth of immersion. Prior to the next measurement, shortly rinse the combination electrode with the test sample or deionized water.

Note
Prevent contact of the pH membrane to the beaker bottom to avoid scratches on the pH membrane.
Put the clean combination electrode in the watering cap that is filled with reference electrolyte (KCl 3 mol/L, Ag+ free) and close the refilling opening.

Note – Overnight or longer
pH combination electrodes must not be stored dry or in deionized water. The combination electrode could be permanently damaged by this. If the liquid in the irrigation cap has dried up, condition the combination electrode in reference electrolyte (KCl 3 mol/L, Ag+ + free) for at least 24 hours.

Note
During longer storing periods, salt sediments may develop on the watering cap. They do not affect the measuring characteristics and can easily be re- moved with deionized water when the combination electrode is put into operation again.

Aging

Every pH combination electrode undergoes a natural aging process.
With aging, the responding behavior becomes slower and the electrode slope and asymmetry change. Moreover, extreme operating conditions can considerably shorten the lifetime of the combination electrode. These are:

•  Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bromides, sulfides, iodides, proteins
•  High temperatures
•  High changes in pH and temperatures
•  The warranty does not cover failure caused by measuring conditions and mechanical damage.

Maintenance and cleaning

Refilling the reference electrolyte

During operation, a small amount of reference electrolyte leaks through the junction from the combination electrode into the test sample.
If the level of reference electrolyte becomes too low with time, refill it through the refilling opening. Refilling is very easy with the enclosed dropping bottle. Proceed as follows:

•  Cut off the tip of the dropping bottle at a right angle until the opening in the tip can be seen
•  Open the refilling opening of the combination electrode
•  Press the tip of the dropping bottle into the refilling opening while turning it slightly
•  Pump the reference electrolyte in the shaft using the dropping bottle
•  Pull the dropping bottle out of the refilling opening while turning it slightly if necessary

  Cleaning

Remove water-soluble contamination by rinsing with deionized water. Re- move other contamination as follows:

Note: Make sure the level of the reference electrolyte is above that of the cleaning solution.

Note
Hydrofluoric acid, hot phosphoric acid and strong alkaline solutions destroy the glass membrane.

After cleaning
Rinse the combination electrode with deionized water and condition it in reference electrolyte solution (KCl 3 mol/l, Ag+ free) for at least 1 hour. Then recalibrate the combination electrode.

Wear parts and accessories

705Y

Contact information

Ordering & Technical Support

Telephone :  800-897-4151 937-767-7241

Monday through Friday, 8:00 AM to 5:00 PM ET

Fax :  937-767-1058

Email :environmental@ysi.com

Mail :  YSI Incorporated 1725 Brannum Lane Yellow Springs, OH 45387 USA

Internet :  www.ysi.com

When placing an order please have the following information available:

• YSI account number (if available)
• Name and Phone Number Model number or brief description
• Billing and shipping address
• Quantity
• Purchase Order or Credit Card

Service Information

YSI has authorized service centers throughout the United States and Internationally. For the nearest service center information, please visit www.ysi.com and click ‘Support’ or contact YSI Technical Support directly at 800-897-4151.

When returning a product for service, include the Product Return form with cleaning certification. The form must be completely filled out for an YSI Service Center to accept the instrument for service. The Product Return form may be downloaded at www.ysi.com and clicking on the ‘Support‘ tab.

What can Xylem do for you?
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For more information on how Xylem can help you, go to www.xyleminc.com

YSI
1725 Brannum Lane
Yellow Springs, OH 45387
Tel: +1 937-767-7241; 800-765-4974
Fax: +1 937-767-1058
Email: environmental@ysi.com
Web: www.ysi.com
©Xylem Inc

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