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ION CALIBRATION GUIDE

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pH Calibration (Using Custom Buffers)

  Follow same procedure as below – differences are: 2 point minimum calibration is required, the 

primary display in cal mode is manually adjusted to the desired custom buffer value, and any pH 

value can be used in any order – but must be at least 1.0 pH unit apart from one another.

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pH Calibration (Using Preset Buffer Group)

  1.  Turn meter on, press  

MODE

  if needed for pH measurement mode.

  2. Press  

CAL

  (enter password if required) to enter calibration mode.

  3.  Rinse the pH electrode with clean water then dip in your pH buffer – the 1st calibration value    

  must always be 7.00, 6.86, or 6.79 depending on the buffer group used; subsequent values can   
  be calibrated in any order. Use an ATC electrode for most accurate results.

  4.  The primary display is the un-calibrated measured value. The 2700 automatically selects the    

  appropriate value from your buffer group in the secondary display. This value will blink when    
  the ‘Stable’ indicator appears. Selecting  

CLR–C

  will clear the existing calibration.

  5. Press  

  to accept calibration. The accepted value will be visible inside of a  

  beaker icon. % slope is visible after two calibration points have been completed.

  6.  Repeat steps 3 - 5 with additional pH buffers or press  

ESC

  to save calibration.  

  When the specified number of calibration points is met, the pH calibration report page is  
  automatically displayed.

pH CALIBRATION GUIDE

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Ion Selective Calibration (Minimum 2-Point Required)

  1. Press  

MODE

  for ion measurement mode. “- - - -” indicates no ion calibration  

  is stored. Press  

CAL

  .

  2.  Prepare two or more ion calibration standards. Rinse and dip your ISE into your lowest 

  calibration standard. Use up/down arrows to match the upper value to your standard  
  (from 0.001 to 10000).

CONDUCTIVITY CALIBRATION GUIDE

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Conductivity Calibration (Manual Adjustment)

  1. Press  

CAL

  if needed for calibration mode. Rinse electrode then dip into your  

  conductivity standard – use lowest to highest when using multiple standards.

  2.  Use up/down arrows to adjust cell constant or press  

NEXT

  to keep the nominal value    

  (recommended). Next, adjust the value to match your standard. Press  

  when ‘Stable’.  

 

  The value, Range (R) and the new cell constant are now shown.

  3.  For multi-point calibration repeat with additional standards.  

 Press 

 

ESC

  to save calibration or press  

NEXT

  to view the calibration report.  

  Calibrate one point per range, up to 5 points.

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Conductivity Calibration (Automatic Recognition)

  1. Press  

CAL

  if needed for calibration mode. Rinse electrode then dip into your  

  conductivity standard – either 84 µS, 1413 µS, 12.88 mS or 111.8 mS. 

  2.  Use up/down arrows to adjust cell constant or press  

NEXT

  to keep the nominal value    

  (recommended). Press  

  when ‘Stable’. The value, Range (R) and the new cell constant  

 

  are now shown.

  3.  For multi-point calibration repeat with additional standards. Press  

ESC

  to save  

 

  calibration or press  

NEXT

  to view the calibration report. Calibrate one point per range,  

  up to 4 points.

  3. Press  

  after ‘Stable’ appears. The calibration value is acceptable if it is within  

  15 to 90 mV/decade and will be visible inside of a beaker icon.

  4.  Repeat steps 2 & 3 with the next lowest calibration standard (up to 8 standards) or  

 press 

 

ESC

  to save the calibration.

  ** Refer to your ISE manual for electrode specific instructions and care.

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Summary of Contents for Bench 2700 Series

Page 1: ...e five digit number to identify samples Measuring Range of displayed value 1 thru 5 Applicable to Conductivity TDS Salinity or Resistivity measurements only Automatic Temperature Compensation is activ...

Page 2: ...red values in memory Inserts measured value into memory Access Calibration Report Data TEMP SORT CLR C NEXT P Access Temperature Calibration Clears current calibration Sorts stored data memory out by...

Page 3: ...ing more quickly and more often use FAST setting MEDIUM or SLOW is recommended for most applications When Auto Read is enabled a stability criteria setting of SLOW is recommended to for best results S...

Page 4: ...single sample over time Note that MEM IN is not available during TIMED setting As data is collected the display will indicate how much memory has been used To view stored data use MEM OUT Note the mor...

Page 5: ...onsecutive times the meter returns to measurement mode In the event the password can not be recovered a password can be provided via a written request to Eutech Instruments Oakton Instruments The inst...

Page 6: ...he primary display is the un calibrated measured value The 2700 automatically selects the appropriate value from your buffer group in the secondary display This value will blink when the Stable indica...

Page 7: ...on Automatic Recognition 1 Press CAL if needed for calibration mode Rinse electrode then dip into your conductivity standard either 84 S 1413 S 12 88 mS or 111 8 mS 2 Use up down arrows to adjust cell...

Page 8: ...n mode rinse the probe do not dry 2 Dip the probe into sample of known DO concentration i e determined by titration or another instrument Press CAL 3 Use up down arrows to adjust the upper DO reading...

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