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pH Meters with Electrodes

This is the place to get your top of the line pH meter and electrode products and supplies.

Here’s just a small sample of the pH meters we carry and their applications. 
  
The Jenway 3510 pH Meter with electrode is a versatile, simple to use pH, mV and temperature meter that’s supplied with a glass combination pH meter electrode that’s ideal for routine analysis. 
  
If you need a general purpose portable pH meter instead, then check out the Enterprise 350 pH meter. 
  
And if you require a pH meter that’s well-suited for quality control and GLP applications, then you’ll want to use the Jenway 3520 pH Meter with electrode.

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OHAUS AquaSearcher™ pH Meter
 

The OHAUS pH Meter is an easy-to-use Benchtop Meter for measuring pH and ORP. AB23PH Bench Meters are simple to use with basic instructions, operational buttons, and LCD display for accurate readings. A stand-alone electrode holder with a small base gives the user greater flexibility when running experiments and makes the AB23 benchtop meter a perfect space-saving meter for your lab.

 

Unique Features

  • 6 instructional menu buttons
  • 5 in. bright LCD display with complete measurement information allows you to monitor the results from a distance
  • 99-item memory for measurements ensures efficient data collection
  • Auto buffer recognition
  • three-point calibration
  • electrode condition icon

Includes

  • Power Cord
  • AB23PH Benchtop Meter
  • ST322 pH Electrode
  • Stand-Alone Electrode Holder
  • pH Mini Buffer Kit (4 x 50 mL)

 

Don’t forget to check out our PR1MA Buffers!


Specifications


Measurement
Range		0 - 100ºC
0.00 - 14.00 pH
-1999 - 1999 mV
Measurement
Resolution		0.1ºC
0.01 pH
1 mV
Accuracy±0.5ºC
±0.01 pH
±1 mV
Dimensions
(D x W x H)		8.3 x 5.6 x 2 In.
210 x 142 x 51 mm
Net weight0.8 lb. | 0.38 kg.
DisplayLCD w/ backlight
ElectrodeST322 (Included)
ParameterpH / ORP
PowerAC Adapter (Included)
Item#:
ASAQUAPHMETER


The OHAUS High-Performance pH Meter for Standard Lab Applications (30058489) has been discontinued.

A replacement model (AB23PH-F) can be found here.

OHAUS pH Meters
 

ST2100-E

After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of benchtop pH meters. Starter 2100 is the economical choice for applications requiring simple pH measurement.

Applications
pH, oxidation-reduction potential (ORP) measurement

Display
Liquid crystal display (LCD)

Operation
AC adapter (included)

Communication
N/A

Construction
ABS housing, built-in electrode holder

Design Features
Auto buffer recognition, two-point calibration, quick reference guide

 

ST3100-F

Starter 3100 has many smart features that make it as intuitive as it is accurate for standard pH measurement.

Applications
pH, oxidation-reduction potential (ORP) measurement

Display
Backlit liquid crystal display (LCD)

Operation
AC adapter (included)

Communication
RS232 (included)

Construction
ABS housing, standalone electrode holder, replaceable in-use cover

Design Features
99 measurement memory, automatic and manual endpoint functions, automatic and manual temperature compensation, quick reference guide

 

ST5000-F

Starter 5000 provides accurate pH and ORP measurement for high-level experiments and research. Enhanced features, advanced technology, and high performance have been combined to support complex laboratory tasks requiring pH measurement.

Applications
pH, oxidation-reduction potential (ORP) measurement

Display
Backlit liquid crystal display (LCD), touchscreen

Operation
AC adapter (included)

Communication
RS232 and USB (included). GLP/GMP data output with real-time clock.

Construction
ABS housing, standalone electrode holder, replaceable in-use cover

Design Features
3 endpoint modes, continuous measurement mode, up to 9-point calibration, 1,000 measurement memory

 

Specifications

 Item No.

30057495

30058489

30129896

 Model

ST2100-E

ST3100-F

ST5000-F

Measurement Range

-2.00 to 16.00 pH; 
-1999 to 1999 mV; 
0 to 100°C

-2.00 to 16.00 pH;
-1999 to1999 mV; 
-5°C to 110°C

-2.00 to 20.00 pH;
-2000.00 to +2000.00 mV; 
-30 to 130°C

Accuracy

±0.01 pH;  ±1 mV; 
±0.5 °C

±0.01 pH;  ±1 mV; 
±0.5 °C

± 0.03% mV;  ± 0.002 pH; 
± 0.1 °C

Measurement Resolution

0.01 pH;  1 mV; 
0.1 °C

0.01 pH;  1 mV; 
0.1 °C

0.001 pH;  0.01 mV; 
0.1 °C

Display

LCD

LCD with backlight

N/A 

ATC

 N/A

N/A

Yes

Electrode

ST210 (Included)

ST310 (Included)

ST350 (Included)

Accuracy ± (mV)

1 mV

1 mV

0.03 mV

Accuracy ± (Temperature)

0.5 °C

0.5 °C

0.1 °C

Battery Life

Not Applicable

Not Applicable

N/A 

Calibration

2 Point

3 Point

9 Point

Meter Type

 N/A

N/A

pH;  ORP

Dimensions

3.07 in x 8.66 in x 6.89 in
(78 mm x 220 mm x 175 mm)

3.07 in x 8.66 in x 6.89 in
(78 mm x 220 mm x 175 mm)

N/A 

In-use cover

No

Included

Included

Measurement Range (Temperature)

0°C to 100°C

-5°C to 110°C

-30°C to 130°C

Measurement Range

-1,999 mV to 1,999 mV

-1,999 mV to 1,999 mV

 N/A

Net Weight

1.65 lb (0.75 kg)

1.65 lb (0.75 kg)

19.5 oz (550 g)

Parameter

pH / ORP

pH / ORP

pH / ORP

pH accuracy (±)

0.01

0.01

0.002

pH measuring range

-2 to 16

-2 to 16

-2 to 20

pH resolution

0.01

0.01

0.001

Power

AC Adapter (Included)

AC Adapter (Included)

AC Adapter (Included)

Resolution (Voltage)

1 mV

1 mV

N/A 

Temperature Display

 N/A

N/A

Yes

Temperature Compensation

Yes

Yes

Automatic

Temperature Resolution

0.1°C

0.1°C

0.1°C

Temperature Sensor

30 KΩ NTC

30 KΩ NTC

30 KΩ NTC

Working Environment

41°F to 104°F, 80%RH, non-condensing (5°C to 40°C, 80%RH, non-condensing)

41°F to 104°F, 80%RH, non-condensing (5°C to 40°C, 80%RH, non-condensing)

50°F to 104°F, 85%RH, non-condensing (10°C to 40°C, 85%RH, non-condensing)

Protection Rating

 N/A

N/A

IP54
Item#:
ASPHMETEROHAUS
  • Compact basic series - for the usual applications, made from the universal A-type membrane glass
  • Comfortable handling, stylish design and reliable function
  • Liquid electrolyte electrodes with unique platinum diaphragm and refill port slider
  • Each electrode with individual serial number
  • Fits both Pinnacle and SI Analytics pH meters
  • Includes 1 m fixed cable

BlueLine pH Electrode

pH 14
285129147

pH 15
285129155

pH 25
285129258

pH 26
285129266

pH Range

0 to 14

0 to 14

0 to 14

0 to 14

Temperature Range

-5°C to +100°C

-5°C to +100°C

-5°C to +80°C

-5°C to +80°C

Temperature Sensor

NTC 30 k

NTC 30 k

N/A

NTC 30 k

Shaft

Glass, 12 mm Ø

Glass, 12 mm Ø

Noryl, 12 mm Ø

Noryl, 12 mm Ø

Shaft Length

120 mm

120 mm

120 mm

120 mm

Diaphragm

Platinum

Platinum

Fibre

Fibre

Reference System

Ag/AgCl

Ag/AgCl

Ag/AgCl

Ag/AgCl

Referencee Electrolyte

KCl 3 mol/L

KCl 3 mol/L

Gel (KCl), low maintenance, not refillable

Gel (KCl), low maintenance, not refillable

Shape of Glass Membrane

Conical

Conical

Cylindrical

Cylindrical

Resistance of Glass Membrane (25°C)

200 M

200 M

400 M

400 M

Type of Membrane Glass

A

A

A

A

Connection

DIN 19 262 + banana plug

BNC plug + banana plug

BNC plug

BNC plug + banana plug
Item#:
ASPHMETER1

The 3-in-1 electrodes measure pH, reference, and temperature in one electrode. These electrodes are constructed out of an epoxy material for increased strength and durability. The 3-in-1's temperature compensation will only work with our 300 and 400 series meters. The refillable 3-in-1 electrode has a patented ion barrier which produces the fast response of an Ag/AgCl electrode without the use of AgCl in the reference solution. This results in a tris compatible electrode. This electrode also features patented replaceable junction for extended electrode life.

Special Features: Replaceable Junctions

Slow response times and unstable readings are most often caused by clogged or contaminated reference junctions. Our patented replaceable junction lets you restore your electrode to like-new performance in minutes, at a fraction of the cost of a new electrode.

Item #
476156
476286
476346
476436
476466
476476
Model
Semi-Micro Refillable
Flat Surface
Semi-Micro Gel
3 in 1 Refillable
3 in 1 Gel
Gel Spear Tip
Connector Types
BNC
BNC
BNC
BNC
BNC
BNC
ATC Connector
RCA
RCA
Measuring
pH Range
0 to 14
0 to 14
0 to 14
0 to 14
0 to 14
2 to 13
Reference
Internal Element
Silamid (Ag+ Barrier)
Silamid (Ag+ Barrier)
Ag/AgCl
Silamid (Ag+ Barrier)
Silamid (Ag+ Barrier)
Silamid (Ag+ Barrier)
Fill Solution
3 M KCl
3 M KCl
Gel
3 M KCl
Referid Polymer
Gel
Junction Material
Platinum
Replaceable Ceramic
Annular
Replaceable Ceramic
Open (Hole)
Ceramic
Temperature
Operational Range
0 to 100°C
0 to 100°C
0 to 80°C
0 to 100°C
0 to 80°C
-5 to 80°C
Dimensions
Overall
8.07 in (205 mm)
6.1 in (155 mm)
7.5 in (190.5 mm)
6.1 in (155 mm)
6.1 in (155 mm)
5.6 in (143 mm)
Body/Tip
0.47 in (12 mm) /
0.47 in (12 mm)
0.25 in (6.35 mm)
0.47 in (12 mm)
0.47 in (12 mm)
0.43 in (11 mm) /
 
0.19 in (5 mm)
0.39 in (10 mm)
Cable Length
38 in (1M)
Body Material
Glass
Polymer
Epoxy
Polymer
Polymer
Polymer
Fill Solution
477006
477006
None
477006
None
None
Replaceable Junction
N/A
477269
N/A
477269
N/A
N/A
Applications
 
- Sample depth 5/8 in minimum
- Replaceable junction helps prevent clogging
- Culture tubes
- Replaceable junction helps prevent clogging
- Designed for durability and ease of maintenance in aqueous sampling
- Sampling meats, cheese
 
- Small volume
- Small samples
- Low maintenance
- General pH measurement with automatic temperature compensation
- General pH measurement with automatic temperature compensation
- Low maintenance
 
- Tris Buffer
- Tris Buffer
- Sample depth 3/8 in minimum
- Tris Buffer
- Tris Buffer
 
- Non-aqueous
- Semi-solid substance
Warranty
1-yr
1-yr
6 Months
1-yr
1-yr
6 Months
Item#:
ASPHMETER3

Enterprise 350 pH Meter

  • Simultaneous pH and temperature display
  • Storage of up to 32 results
  • Automatic or manual calibration 500 hours battery life
  • Application specific electrodes and consumables

The 350271 is a general purpose portable pH meter offering 1 or 2 point pH calibration and automatic buffer recognition with manual override. It simultaneously displays both the temperature compensated pH readings and the manually set temperature.

Specifications

 350271370271
pH range-2 to 16-2 to 16
pH resolution0.010.01
pH accuracy± 0.02± .02
Automatic buffer recognition4, 7, 9.22, 10 (with manual override)4, 7, 9.22, 10 (with manual override)
CalibrationUser selectable 1 or 2 pointUser selectable 1 or 2 point
mV range-----± 1999 mV (absolute or relative)
mV resolution-----1 mV
mV accuracy-----± 1 mV
Temperature range-----10 to 105°C
Temperature resolution-----0.1°C
Temperature accuracy----± 0.5°C
Manual temperature range0 to 100 ° C0 to 100°C
ConnectorBNCBNC
Power2 AA batteries2 AA batteries
Battery life500 hours (typical)500 hours (typical)
Size (l X w x d)175 x 75 x 35 mm175 x 75 x 35 mm
Weight250 g250 g
Item#:
ASPHMETER2
Tris/TE compatible for
Tris buffer, semi-micro with 90mm reach, glass bodied for pH measurements in biological buffers, blood and protein samples (max. temperature 50°C)
Item#:
924030
Your Price:
537.00
Each
Conductivity/pH Meter

3540 Bench pH/conductivity Meter (US)

  • Simultaneous display of pH and conductivity
  • 2 independent channels to prevent interference between probes
  • Additional modes for resistivity, salinity, TDS and mV
  • Data logger with auto save/print options
  • Storage of up to 500 readings (250 for each mode)

    The 3540 is ideal for use in all laboratories where pH and conductivity analyses are required. The setup menu gives quick and easy access to the whole range of instrument, pH and conductivity measurement options. Calibration of both channels is automatic, with the option to select 1, 2 or 3 calibration points. The pH channel can also display mV values if required.

    The 3540 conductivity pH meter is supplied with a glass combination pH electrode (924 005), glass conductivity probe (K=1 027 013), electrode stand and holder, ATC probe (027 500), BNC shorting plug, pH buffers and US power supply.


    Parameter

    3540

    pH range

    -2.000 to +20.000

    pH resolution

    0.001/0.01/0.1

    pH accuracy

    ±0.003

    Conductivity range

    Auto-selected from 0.01µS to 1.999S 

    Conductivity resolution

    0.01µS to 1mS

    Conductivity accuarcy

    ±0.5% ±2 digits

    mV range

    ±1999.9mV

    mV resolution

    0.1mV

    mV accuracy

    ±0.2mV

    Temperature range

    -10 to 105°C

    Temperature resolution

    0.1°C

    Temperature accuracy

    ±°0.5°C

    ATC range

    0 to 100°C

    Reference temperature

    18,20 or 25°C

    GLP

    Calibration reminder interval,
    Security code protected data

    Outputs

    Analogue, RS232and IrDA

    Connector

    BNC (pH) and 7-pin DIN (conductivity)

    Power

    9V AC ±10% @ 50/60Hz

    Size (l x w x d)

    210 x 250 x 55mm

    Weight

    850g
Item#:
354101
2954.8300
Your Price:
2017.00
Each
Combo electrode, ATC Probe,

Jenway pH Meter 3510

The 3510 is a versatile, simple to use pH, mV and temperature meter that is ideal for routine analysis. With up to three decimal place resolution and a choice of up to three calibration points the 3510 provides the user with added flexibility where future demands for enhanced performance may be required. A choice of pH calibration buffers to DIN, JIS and NIST standards can be used for automatic calibration, as well as manually entered buffer values.


Specifications include:

  • Simultaneous readout of pH and temperature
  • pH resolution to 3 decimal places
  • 1, 2 or 3 point calibration
  • Automatic or manual buffer selection
  • Storage of up to 32 results
  • RS232 connection to printer or PC via optional DataWay PC software
  • Warranty: 2 years

3510 pH/mV meter supplied with glass combination pH electrode, electrode stand and holder, ATC probe, BNC shorting plug, pH 4, 7 and 10 buffers and US power supply

Specifications:

Parameter

3510

pH range

-2.000 to +19.999

pH resolution

0.001/0.01/0.1

pH accuracy

±0.003

Calibration

User selectable 1, 2 or 3 point

Automatic buffer recognition

Jenway (2.00, 4.00, 7.00, 9.20 and 10.00), DIN, NIST, JIS

mV range

±1999.9mV

mV resolution

0.1/1mV

mV accuracy

±0.2mV

Temperature range

-10 to 105°C

Temperature resolution

0.1°C

Temperature accuracy

±°0.5°C

ATC range

0 to 100°C

Alarm points

-

GLP

-

Outputs

Analogue and RS232

Connector

BNC

Power

9VAC (adaptor included)

Size (l x w x d)

210 x 250 x 55mm / 8.3 x 10 x 2.2 in

Weight

850g / 2lbs
Item#:
351-101
Your Price:
1000.00
Each

Jenway pH Meter 3510

The 3510 is a versatile, simple to use pH, mV and temperature meter that is ideal for routine analysis. With up to three decimal place resolution and a choice of up to three calibration points the 3510 provides the user with added flexibility where future demands for enhanced performance may be required. A choice of pH calibration buffers to DIN, JIS and NIST standards can be used for automatic calibration, as well as manually entered buffer values.


Specifications include:

  • Simultaneous readout of pH and temperature
  • pH resolution to 3 decimal places
  • 1, 2 or 3 point calibration
  • Automatic or manual buffer selection
  • Storage of up to 32 results
  • RS232 connection to printer or PC via optional DataWay PC software
  • Warranty: 2 years

3510 pH/mV meter supplied with glass combination pH electrode, electrode stand and holder, ATC probe, BNC shorting plug, pH 4, 7 and 10 buffers and US power supply

Specifications:

Parameter3510
pH range-2.000 to 19.999
pH resolution0.001 / 0.01 / 0.1
pH accuracy± 0.003
CalibrationUser selectable 1, 2 or 3 point
Automatic buffer recognitionJenway (2.00, 4.00, 7.00, 9.20 and 10.00), DIN, NIST, JIS
mV range± 1999.9 mV
mV resolution0.1 / 1 mV
mV accuracy± 0.2 mV
Temperature range-10 to 105°C
Temperature resolution0.1°C
Temperature accuracy± 0.5°C
ATC range0 to 100°C
Alarm points-
GLP-
OutputsAnalogue and RS232
ConnectorBNC
Power9VAC (adaptor included)
Size (L x W x D)210 x 250 x 55 mm / 8.3 x 10 x 2.2 in.
Weight850g / 2 lbs.
Item#:
ASPHMETERGLASS
with electrode

3520 Bench pH/mV Meter (US)

  • Ideal for quality control and GLP applications
  • Up to 3 decimal place resolution
  • 1, 2 or 3 point pH calibration
  • Automatic or manual buffer selection
  • Multiple language options
  • Storage of up to 500 results
  • RS232 connection to printer or PC or infra-red (IrDA) communication
  • GLP compliant

    The 3520 dynamic pH/mV meter offers research grade specifications with a comprehensive range of features and functions, making it suitable for the broadest range of research, general laboratory, QC and GLP based applications. The built in data logger can store, print or output readings based on a wide range of trigger options, making this model suitable for monitoring and controlling pH levels.

    The 3520 pH/mV meter is supplied with glass combination pH electrode (924 005), electrode stand and holder, ATC probe (027 500), BNC shorting plug, pH 4, 7 and 10 buffer sachets and US power supply.

    Parameter

    3520

    pH range

    -2.000 to +20.000

    pH resolution

    0.001/0.01/0.1

    pH accuracy

    ±0.003

    Calibration

    User selectable 1, 2 or 3 point

    Automatic buffer recognition

    Jenway (2.00, 4.00, 7.00, 9.20 and 10.00), DIN, NIST, JIS

    mV range

    ±1999.9mV

    mV resolution

    0.1/1mV

    mV accuracy

    ±0.2mV

    Temperature range

    -10 to 105°C

    Temperature resolution

    0.1°C

    Temperature accuracy

    ±°0.5°C

    ATC range

    0 to 100°C

    Alarm points

    -2.000 to 19.999pH

    GLP

    Calibration reminder interval (1 to 999hrs)
    Alarm outputs (open collector and audible).
    Security code protected data

    Outputs

    Analogue, RS232and IrDA

    Connector

    BNC

    Power

    9V AC ±10% @ 50/60Hz

    Size (l x w x d)

    210 x 250 x 55mm

    Weight

    850g
Item#:
352101
Your Price:
1281.00
Each
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