Handling
Electrodes should be rinsed between samples with distilled or deionized water. Never wipe an
electrode—wiping can cause erroneous readings due to static charges. Blot the end of the electrode
with lint-free paper to remove excess water.
Refillable Electrodes
The filling solution in refillable electrodes should be filled up to, but not past, the refill hole. Make sure the
refill hole is left open when measuring to ensure that the fill solution flows properly through the reference
junction.
Storage
Always keep your pH electrode moist. We recommend that you store your electrode in a solution of
4 M KCl. If 4 M KCl is not available, use a pH 4 or 7 buffer solution. DO NOT store electrode in distilled
or deionized water—this will cause ions to leach out of the glass bulb and render your electrode useless.
After storage, you may notice white KCl crystals forming outside your electrode. This will not interfere
with measurements. Simply rinse the electrode and blot dry before use.
Protective Rubber Boot
Most electrodes are shipped with a protective rubber boot over the glass bulb to help prevent cracking
or scratching. Remove the rubber boot before using your electrode. Keep your electrode in long-term
storage with the boot on—just fill the boot with enough 4 M KCl solution to cover the glass bulb and
replenish as needed to keep the bulb moist.
From http://www.coleparmer.com/TechLibraryArticle/550
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International Offices
Pall Corporation has offices and plants throughout the world in: Argentina, Australia, Austria,
Belgium, Brazil, Canada, China, France, Germany, India, Indonesia, Ireland, Italy, Japan,
Korea, Malaysia, New Zealand, Norway, Philippines, Poland, Russia, Singapore, South Africa,
Spain, Sweden, Switzerland, Taiwan, Thailand, United Kingdom, and Vietnam. Distributors in
all major industrial areas of the world. To locate the Pall office or distributor nearest you, visit
www.pall.com/contact.
The information provided in this literature was reviewed for accuracy at the time of publica-
tion. Product data may be subject to change without notice. For current information consult
your local Pall distributor or contact Pall directly.
© 2017, Pall Corporation. Pall, , Allegro and Kleenpak are trademarks of Pall Corporation. ® indicates a
trademark registered in the USA and TM indicates a common law trademark.
Filtration. Separation. Solution.
is a service mark of Pall Corporation.
6/17, PDF, GN17.6781
USD2915a
Visit us on the Web at www.pall.com/allegro
E-mail us at [email protected]
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