$64 Cole-Parmer pH Electrode, Combination, Double-Junction, Gel Fill Industrial Scientific Test, Measure Inspect Cole-Parmer pH Electrode Combination Fill Translated Gel Double-Junction Double-Junction,,pH,$64,Combination,,Gel,/binodous802121.html,Electrode,,Fill,Industrial Scientific , Test, Measure Inspect,Cole-Parmer,casanatura.mx $64 Cole-Parmer pH Electrode, Combination, Double-Junction, Gel Fill Industrial Scientific Test, Measure Inspect Cole-Parmer pH Electrode Combination Fill Translated Gel Double-Junction Double-Junction,,pH,$64,Combination,,Gel,/binodous802121.html,Electrode,,Fill,Industrial Scientific , Test, Measure Inspect,Cole-Parmer,casanatura.mx
Since glass pH electrodes measure H concentration relative to their reference half-cells, they must be calibrated periodically to ensure accurate, repeatable measurements. Our wide selection of commercial pH calibration buffers include solutions standardized against NIST-certified pH references for calibrating meters with resolution up to 0.001 pH.
Although calibration against one pH reference buffer (one-point calibration) typically ensures accurate pH measurement, frequent two-point or even three-point calibrations ensure the most reliable results. Make sure your pH system includes calibration buffers for a range of pH values.
pH electrodes are shipped with the electrodes moist. Prior to using your electrode for the first time, follow these three steps to condition your electrode:
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.
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.
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.
Do you really want to delete the list, ?
This won't delete the recipes and articles you've saved, just the list.
This feature has been temporarily disabled during the beta site preview.
Double CheckAre you sure you want to delete your notes for this recipe?
Get the print magazine, 25 years of back issues online, over 7,000 recipes, and more.