RX electrode 5-metre cable and plastic BNC connector

21539 RX(RX electrode) 5-metre cable and plastic BNC connector

This ORP electrode is a hand crafted, precision analytical device. Carefully follow the directions in this instruction sheet to obtain the best performance  and electrode life.

 Required Equipment and Solutions

ㆍ pH/mV meter
ㆍpH buffer 4.01 saturated with quinhydrone
ㆍpH buffer 7.00 saturated with quinhydrone
ㆍWash bottle filled with distiled or de-ionized water
ㆍLab wipes
ㆍLaboratory magnetic stirrer and magnetic stir bars
ㆍClean breakers

Preparation of the Electrode

Mono ORP electrodes are shipped dry with a rubber boot covering the tip of the electrode to protect the sensing element.

Combination ORP electrodes are shipped with a storage bottle or protective boot covering the electrode tip. The bottle or the boot contains a foam or a cotton ball moist with DI water.

Remove the bottle or the boot from the electrode and thoroughly rinse the electrodean with distlled water. Wipe carefully with a clean lab wipe.

For refillable combination ORP models, uncover the filling port to expose the electrode reference chamber fill hole (for sealed, gel filled electrodes, disregard this operation). Fill the reference chamber with reference filling solution. Use the appropriate reference filling solution. Electrodes that  have been filled with the incorrect filling solution are not covered under warranty.

Reference Filling Solution Selection:

  ㆍFor ORP combination electrodes with Calomel and Double Junction Ag/AgCI reference half cells, use 4 M KCI reference filling solution.
  ㆍFor ORP combination electrodes with Single Junction Ag/AgCI reference half cells, use 4 M KCI saturated with AgCI reference filling solution.

 Checking Electrode Operation

   1. Connect the ORP electrode to the input connector on the pH/mV meter.Ensure the electrode connection is secure.
  2. Place the electrode into a beaker containing quinhydrone saturated pH 7.00 buffer. Stir genly. The mV reading E1 should be 86 ±20 mV.
  3. Remove the electrode from the buffer. Rinse with distiled water and blot with a lab wipe.
  4. Place the electrode into a beaker containing quinhydrone  saturated pH 4.01 buffer. Stir gently. Record the mV reading. The difference between E2 and E1, (E2-E1), should be 175±20 mV.

Reading a Sample with the Electrode

1. Rinse the electrode with distilled water and blot with a lab wipe. Place the electrode in a beaker containing the sample and a stir bar. Stir as before. Record the mV reading when the reading is stable.
2. Remove the electrode from the sample, rinse the electrode  with distilled water over the "waste" beaker. Blot the electrode  dry with a lab wipe. The electrode is now ready to read the ORP readings of other samples.

Storing the Electrode

Mono ORP electrodes should be stored dry. Combination ORP electrodes should always remain moist.

When storing for long periods, store the electrode in the storage bottle or boot which came with the electrode. Ensure that the foam or cotton ball remains moist with distilled water.

Electrode Cleaning

Contamination of the sensing element often results in slow response and inaccurate readings. Clean the element by one of the following procedures:
   1. Inorganic Deposits: Immerse electrode tip in 0.1 HC1 for 10 minutes. Wash the tip with distilled water.
   2. Organic Oil and Grease Films: Wash electrode tip in a liquid  detergent and water.
   3. After above treatment, soak the electrode tip in alcohol for 5 minutes, then, in quinhydrone saturated pH 4.01 for 15 minutes; rinse with distilled water afterwards.

NOTE: DO NOT ATTEMPT TO SAND OR POLISH THE SENSING ELEMENT WITH SAND PAPER OR OTHER  POLISHING MATERIAL!

Laboratory Products Warranty

This products designed and sold for use in laboratory applications are warranted to be free from defects in materials and workmanship for a period of six (6) months, provided that the product is used in accordance with the instructions provided and that the product has not been subjected  to breakage, alteration, misuse, abuse or used in an application not normally intended for the product. In the event of a warranted failure within the warranty period, contact your representative during regular business hours, and ask for customer service.

Please be prepared to discuss the details of the difficulty. If necessary, a Return Authorization Number (RAN) will be issued. Materials or goods returned without an RAN will not be accepted. Return the product in freight prepaid.

The warranty described above is exclusive and in lieu of all other warranties whether statutory, express or implied including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose and all warranties arising from the course of dealing or usage of trade. The buyer's sole and exclusive remedy is for repair or replacement of the non-conforming product or part thereof, but in no event shall dealers or agents of any tier be liable to the buyer or any person for any special, indirect, incidental or consequential damages whether the claims are based in contract in tort (including negligence) or otherwise with respect to or arising out of the product furnished hereunder.
No other representations of warranty made by any person, including dealers, employees or agents shall be binding unless made in writing and. signed by an official.

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  Instructions  for use of ORP

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