Bante210 Benchtop pH Meter
Instruction Manual
BANTE INSTRUMENTS LIMITED
Technology to create the future...
BANTE210 BENCHTOP PH METER
1
Introduction
Thank you for selecting the Bante210 benchtop pH meter. This manual provides a step-by-step guide to help you operate the meter, please
carefully read the following instructions before use.
Unpacking the Meter
The following list describes the standard accessories of the meter. After the unpacking, please check all accessories are complete. If any
are damaged or missing, please contact nearest distributor.
ACCESSORIES:
■ pH Electrode
■ Temperature Probe
■ pH Buffer Pouches (pH4.01, 7.00, 10.01)
■ Power Adapter
Display
The 210 benchtop meters is equipped with a clear and bright LCD display that used to show measured value and mode indicators.
INDEX:
Measurement mode indicator:
Indicates meter is in the measurement mode
Electrode slope indicator:
Indicates the average slope of the pH electrode
Calibration mode indicator:
Indicates meter is in the calibration mode
Hold indicator:
Indicates the displayed value has been frozen
Setup mode indicator:
Indicates meter is in SETUP mode
Automatic Temperature Compensation:
Indicates meter is in the temperature compensation mode
Keypad
The meter includes 6 multifunction keys, names and symbols describe each function key controls.
BANTE210 BENCHTOP PH METER
2
MEAS|
■ Power the meter ON/OFF.
■ Freezes the measured value on the display, press the key again to resume measuring.
■ In the calibration or temperature setting mode, exits current mode and returns to measurement.
MODE
■ Toggles between pH and mV measurement modes.
CAL|
■ Press the key to enter the pH calibration mode.
■ Press and hold the key to enter the setup menu.
o
C
■
Press the key to set the temperature or enter the temperature calibration mode.

■ Press the key to increase setting value.

■ Press the key to decrease setting value.
ENTER
■ Confirms the calibration, setting value or displayed option.
Connecting the Electrode Holder
The meter comes with an easy-to-use holder for mounting the pH electrode and temperature probe. If necessary, follow the steps below to
install the electrode holder.
1. The base of the electrode holder with an irregular round hole.
2. The electrode arm has a plastic rod.
Plastic Rod
BANTE210 BENCHTOP PH METER
3
3. Insert the plastic rod into the irregular round hole and swivel the electrode arm 90o. Electrode holder is now ready to swing into desired
position.
ADJUSTMENT OF ELECTRODE ARM:
After installation, if the electrode arm automatically rises or falls, you need to adjust the screws until arm locate at any position.
1. Remove the plastic cover from the electrode arm.
Screws
2. Use the screwdriver to tighten the screw moderately.
3. Insert the plastic cover to previous position. Installation is completed.
Connectors
The meter provides 4 connectors for connecting the various types of sensors. Listed in the below table are the details of these connectors.
1 2
pH/ISE
REF
3 4
DO
COND
ATC
Invalid connectors
INDEX:
CONNECTOR
FUNCTION
1. pH/ISE
For connecting the pH or ORP electrode
2. REF
For connecting the reference electrode
3. ATC
For connecting the temperature probe
4.
For connecting the DC 9V power adapter
BANTE210 BENCHTOP PH METER
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Connecting the pH Electrode
■
Take out the pH electrode from the packaging. Follow the steps below to place the electrode into left or right sides of the electrode arm.
A. Insert the electrode
B. Hook up the cord
C. Hook up the cord
■
Insert the BNC connector into corresponding connector socket. Rotate and push the connector clockwise until it locks. After connection
is completed, DO NOT pull on the sensor cord. Always make sure that the connector is clean and dry.
Connecting the Temperature Probe
The meter comes with a temperature probe for measuring temperature of the sample solution. When temperature probe is connected to
meter, Automatic Temperature Compensation function will immediately start.
1. Place the temperature probe into the circular hole of electrode arm.
2. Insert the connector of probe into the corresponding connector socket on the meter (marked “ATC). Ensure the connector is fully
seated.
BANTE210 BENCHTOP PH METER
5
Connecting the Power Adapter
■
■
Before plugging in the power adapter, ensure the voltage of power adapter matches your local main voltage.
Insert the connector of power adapter into the meter power socket. The meter is now ready for use.
Preparation of pH Standard Buffer Solutions
The 210 meter is packaged with three pH buffer packets required for calibration.
Open the pH7.00 buffer packet, place the powder into a 250ml volumetric flask. Pour distilled water 250ml to scale line, mix the solution
until reagent is completely dissolved.
Preparation of pH4.01 and 10.01 standard buffer solutions are the same as above. Prepared standard buffer solutions should be stored in
hermetically sealed glass containers.
Prior to Use
Remove the protective cap from the bottom of the electrode. If the glass sensitive membrane on the electrode dries out, soak the sensor
in 3M KCL solution or tap water for at least 15 minutes. DO NOT use distilled or deionized water, it will shorten the life of sensor.
Power On/Off
■
■
■
Press MEAS key to turn on the meter, the display shows measured value, mode indicator and help messages.
Press and hold the MEAS key for 5 seconds, the meter will turn off.
If you do not press any key for 3 hours, the meter will turn off automatically.
To disable the auto-off function, please read the SETUP MENU section.
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Setup Menu
The 210 meter contains an integrated setup menu that allows you to customize each displayed option to meet personal preference.
PARAMETER
DESCRIPTION
pH Buffer
OPTIONS
DESCRIPTION
DEFAULT
USA Standard (pH4.01, 7.00, 10.01)
■
NIST Standard (pH4.01, 6.86, 9.18)
1 point
Calibration Point
2 points
■
3 points
Temperature Unit
Auto-Hold
Auto-Off
Reset
Degrees Celsius (Default)
■
Degrees Fahrenheit
Enable
Disable
■
Enable
Disable
■
Restores the parameters back to default settings
Do not use this function
■
SETTING THE DEFAULT PARAMETERS:
1. Press and hold the
key for 3 seconds to enter setup menu, the meter shows default pH buffer option.
Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
2. If necessary, press  or  key select the USA or NIST standard, press ENTER key to confirm. The meter goes to calibration point
selection mode, the display shows 2 points calibration.
Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
3. Press  or  key to select the number of calibration points, press ENTER key to confirm. The meter goes to temperature unit
selection mode, the display shows “UNIT/oC”.
BANTE210 BENCHTOP PH METER
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Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
4. Press  or  key to select the desired temperature unit (oC or oF), press ENTER key to confirm. The meter shows “HOLD/NO”
indicating that the auto-hold function is disabled.
Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
If the auto-hold function is enabled, the meter will automatically sense a stable end-point reading and freeze it.
If you disable this function, the meter allows you to freeze the reading by pressing the HOLD key.
5. Press  or  key to enable or disable the auto-hold function, press ENTER key to confirm. The meter shows “OFF/NO” indicating that
the auto-off function is disabled.
■
■
Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
When the auto-off function is enabled, if you do not press any keys within 3 hours, the meter will automatically turn off to conserve
energy.
6. Press  or  key to enable or disable the auto-off function, press ENTER key to confirm. The meter shows “RST/NO” indicating that
the meter should not be reset.
Setup
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
Reset function will restore the meter back to factory default parameters, all calibration values and selected parameters will be reset.
7. Press  or  key to enable or disable the reset function, press ENTER key to confirm. The meter returns to measurement mode.
Settings is completed.
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Temperature Compensation
In order to get accurate measuring results, you need to enable the manual or automatic temperature compensation before measurement
or calibration.
AUTOMATIC TEMPERATURE COMPENSATION:
Insert the connector of temperature probe into corresponding “ATC” socket, the display immediately shows “ATC” indicator. The meter is
now switched to automatic temperature compensation mode.
Measure
pH
o
C
ATC
ATC
 Press MEAS key to freeze or release the measured value
MANUAL TEMPERATURE COMPENSATION:
1. Do not connect the temperature probe to meter.
2. Press oC key to enter the temperature setting mode.
3. Press  or  key to set the temperature value of sample.
4. Press ENTER key to confirm. Setting is completed.
In the temperature setting mode, press  or  key once, the setting value will increase or decrease by 0.1. Press and hold the  or 
key, the setting value will increase or decrease by 1.
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pH Calibration
During the pH mode, the meter allows up to 3 points calibration. We recommend that you perform at least 2 points calibration for high
accuracy measurement. The meter will automatically recognise and calibrate to following standard buffer values.
■ USA Standard Options: pH4.01, 7.00, 10.01
■ NIST Standard Options: pH4.01, 6.86, 9.18
Single point calibration should only be carried out with pH7.00 or pH6.86, otherwise calibration will not be accepted.
The meter must be calibrated prior to first use or new electrode replaced. To ensure accuracy, regular calibration is recommended. Do not
reuse calibration solution after calibration, contaminants in solution will affect the calibration and eventually the accuracy of the
measurement.
SINGLE POINT CALIBRATION:
1.1 Make sure that you have selected 1 point calibration in the setup menu.
1.2 Rinse the pH electrode with distilled water.
1.3 Press CAL key, the meter shows “CAL1/pH7.00”(or “CAL1/pH6.86”).
Calibration
pH
 Immerse the sensor in the calibration solution
 Press ENTER key to confirm or MEAS key to return to measurement mode
1.4
1.5
Dip the electrode into the pH7.00 (or pH6.86) standard buffer solution, stir the electrode gently.
Press ENTER key to confirm. Wait for the measured value to stabilize, the display will show “END”. Single point calibration is
completed.
Calibration
2 POINTS CALIBRATION:
2.1 Make sure that you have selected 2 points calibration in the setup menu.
2.2 Repeat steps 1.2 to 1.5 above. When the first calibration point is done, the display will show “CAL2”. The meter prompts you to
continue with second point calibration.
Calibration
 Immerse the sensor in the calibration solution
 Press ENTER key to confirm or MEAS key to return to measurement mode
BANTE210 BENCHTOP PH METER
2.3
2.4
10
Rinse the pH electrode with distilled water, dip the electrode into the pH4.01 or 10.01 (pH4.01 or 9.18) standard buffer solution,
stir the electrode gently.
Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. Second point
calibration is completed.
Calibration
Calibration
pH
o
C
ATC
%
3 POINTS CALIBRATION:
3.1 Make sure that you have selected 3 points calibration in the setup menu.
3.2 Repeat steps 1.2 to 1.5 above. When the first calibration point is done, the display will show “CAL2/pH4.01”. The meter prompts
you to continue with second point calibration.
3.3
3.4
Rinse the pH electrode with distilled water, dip the electrode into the pH4.01 standard buffer solution, stir the electrode gently.
Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “CAL3/pH10.01” (or
“CAL3/pH9.18”).
3.5
Rinse the pH electrode with distilled water, dip the electrode into the pH10.01 (or pH9.18) standard buffer solution, stir the
electrode gently.
Press ENTER key to confirm. Wait for the measured value to stabilize, the display shows electrode slope and “END”. The meter
automatically returns to measurement mode. Calibration is completed.
3.6
BANTE210 BENCHTOP PH METER
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■
■
11
During the calibration, if the meter shows “Err”, please check your sensor and calibration solution is fresh and uncontaminated.
If you want to exit from calibration mode, press MEAS key, the meter will immediately return to measurement mode.
The electrode indicator will show average slope of the pH electrode after calibration. If the slope or calibration result does not meet
measurement requirement, the indicator will disappear on the display.
Temperature Calibration
During the measurement mode, when automatic temperature compensation is enabled, if the temperature reading displayed differs from
that of an accurate thermometer, you need to calibrate the meter.
1. Make sure the connecter of temperature probe is connected to the meter.
2. Press oC key to enter the temperature calibration mode, the display shows current temperature reading.
Setup
o
C
ATC
 Press  or  key to select the option or value
 Press ENTER key to confirm or MEAS key to return to measurement mode
3. Press  or  key to set the temperature value of sample.
4. Press ENTER key to confirm. Calibration is completed.
Measurement
Rinse the pH electrode with distilled water, dip the electrode into the sample solution, stir the sensor gently. Wait for the reading to
stabilize, record the measured value on the display.
Hold Function
The 210 meter contains two data hold modes. When the Auto-Hold function is enabled, the meter will automatically sense a stable
endpoint measured value and freeze it, “HOLD” indicator will appear on the display. If the Auto-Hold function is disabled, press
key, the
meter will immediately freeze currently displayed value. Press the key again to release the measured reading, you can continue to take
measurement.
Measure
pH
o
C
ATC
 Press MEAS key to freeze or release the measured value
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Electrode Care and Maintenance
Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use.
AFTER MEASURING:
Rinse the pH electrode in distilled water, store the sensor into the electrode storage solution.
CLEANING THE ELECTRODE:
Salt deposits:
Dissolved the deposits by immersing the electrode in the tap water for 10 to 15 minutes, then thoroughly rinse with distilled water.
Oil or Grease film:
Wash electrode pH bulb gently in some detergent and water, rinse electrode tip with distilled water.
Clogged reference junction:
Heat a diluted KCl solution to 60 to 80oC, place the sensing part of the sensor into the heated solution for about 10 minutes, allow the
electrode to cool in some unheated KCl solution.
Protein deposits:
Prepare a 1% pepsin solution in 0.1M of HCL, set the electrode in the solution for 5 to 10 minutes, rinse the electrode with distilled
water.
HOW TO PREPARE THE ELECTRODE STORAGE SOLUTION:
■ Dissolve 22.36 grams of potassium chloride reagent (KCL) in 100mL distilled water.
■ Stir the solution until the solution has thoroughly mixed.
Optional pH Electrodes
The 210 benchtop meter is equipped with a general purpose pH electrode, if it can not fully meet your measurement requirements, please
refer to the table below to select an applicable sensor.
ORDER CODE
APPLICATION
P11
General purpose pH electrode
P12
For the sample in the test tube
P13
Micro-volume samples
P15
Low conductivity liquids
P16
Tris buffers
P17
Semisolid samples (Flat surface pH electrode)
P18
Slurries
P19
Semi-solid substances, e.g. meat, cheese, etc.
P21
Colloids
P22
High temperature liquids
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Troubleshooting
LCD DISPLAY
CAUSE
CORRECTIVE ACTION
Electrode dried out
Soak the pH electrode in 3M KCL solution for 10 minutes
Measured value is out of range
Check the electrode whether clogged, dirty or broken
Incorrect pH buffer solutions
Use fresh pH buffer solutions for calibration
Electrode is broken
Replace the pH electrode
Model
Bante210
Range
-1.00~15.00pH
Accuracy
±0.01pH
Calibration Points
1 to 3 points
Calibration Solutions
USA (pH4.01/7.00/10.01) or NIST (pH4.01/6.86/9.18)
Range
-1000~1000mV
Accuracy
±1mV
Resolution
1mV
Range
0~105°C, 32~221°F
Accuracy
±1°C
Resolution
0.1°C
Calibration Points
1 points
Calibration Range
Measured value ±10°C
Temperature Compensation
0~100°C, 32~212°F, Manual or Automatic
Hold Function
Manual or Automatic
Power Off
Manual or Automatic (180 minutes after last key pressed)
Connector
BNC
Display
LCD (135× 75mm)
Power Requirements
DC9V, using AC adapters, 220VAC/50Hz
Dimensions
210(L)× 205(W)× 75(H)mm
Weight
1.5kg
Specifications
pH
mV
Temperature
Others
Hazardous Substance Statement
Bante Instruments is committed to the reduction and eventual elimination of all hazardous substances in both the manufacturing process
and finished products we supply. We have an active manufacturing and procurement program to minimize and eliminate the use of harmful
heavy metals such as cadmium, lead, mercury and the like. New technologies and design parameters are also promoting these efforts and
we expect to have little or no such materials in our product in the coming years. We welcome our customer suggestions on how to speed
up these efforts.
Warranty
The warranty period for meter is one year from the date of shipment. Above warranty does not cover sensor and calibration solutions. For
more information, please contact nearest authorized distributor.
BANTE INSTRUMENTS LIMITED
E-mail: banteinstruments@yahoo.com
Phone: +8621-6404-1598
Website: www.bante-china.com
The information in this document is subject to change without notice. Copyright © Bante Instruments Limited, 2015. All rights reserved.
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