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Pufferlösung Kalibrierlösung Eichlösung Hanna pH 6.86 20ml (HI 70006)

Buffer Solution / Bag Calibration Hanna pH 6.86 20ml (HI 70006) is prepared according to precise formulas. This buffer value is widely used in water purification plants, in the food industry and where ever the pH is expected to be slightly acidic.
1,49 €
(7.45 €/100 ml)
Verfügbarkeit: (25 Stück verfügbar)
SKU
3000
.

HANNA®' buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. All pH solutions show batch number, expiration date and the correlation table between pH and temperature. This buffer value is widely used in water purification plants, in the food industry and where ever the pH is expected to be slightly acidic. All pH electrodes require calibration from time to time. A two point calibration characterizes an electrode with a specific pH meter. Once an electrode is characterized, the electrode/meter pair can be used to determine the pH of a solution. Please follow the step-by-step procedure outlined below to perform a two point calibration. A 6.86 pH buffer solution and a 4.01 pH buffer solution are required.

1) Rinse the electrode thoroughly with D.I. water to remove all traces of storage solution, process medium, or previous test solution. Thoroughly rinse the electrode after each buffer test to prevent carry over contamination of the pH buffer solutions. Gently blot the electrode on a soft tissue to remove the excess rinse water. Do not rub the bulb since it can cause a static charge build-up.

2) Insert the electrode and the A.T.C. (automatic temperature compensator) in 6.86 pH buffer solution. Allow 30 seconds for the electrode/A.T.C. to reach thermal equilibrium with the buffer solution. Adjust the pH meter with the standardize/zero control for a pH indication equal to 6.86.

Note: If the meter does not have an A.T.C., place a thermometer along with the electrode in the 6.86 pH buffer solution. Allow 30 seconds for the pair to reach thermal equilibrium with the buffer. Adjust the temperature dial on the meter to correspond with the thermometer reading. Then adjust the pH meter with the standardize/zero control for a pH indication equal to 6.86.

3) Repeat Step 1, and insert the electrode and the A.T.C. in a 4.01 buffer solution. Allow 30 seconds before adjusting the pH meter with the slope/span control for a pH indication equal to 4.01.

4) Repeat Steps 2 and 3 to maximize the precision of the calibration.

Notes:
a) Always use fresh pH buffer solutions for the most accurate results.

b) A 10.01 pH buffer solution may be substituted for the 4.01 pH buffer solution in Step 3. All pH buffer solutions above 6.86 pH are less stable and have a limited life. These high pH buffers will more readily absorb CO2 from the atmosphere and will typically change to a lower pH value when left open. For this reason, a 4.01 buffer solution is recommended to perform a reliable two point calibration. Also, the buffers should bracket the desired pH range.

c) When a pH electrode is calibrated with an autocalibration meter, consult the meter’s operation manual for the required calibration procedure.

Specifications Pufferlösung Kalibrierlösung Eichlösung Hanna pH 6.86 20ml (HI 70006)

  • pH Buffer solution Hanna 6.86
  • 20ml

Shipment contents

  • Pufferlösung Kalibrierlösung Eichlösung Hanna pH 6.86 20ml (HI 70006)
Weitere Informationen
Produktart pH-Kalibrierung
Zustand Neu
Herkunftsland Rumänien
Marke Hanna Instruments
Modell HI70006
Preis 1,49 €
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