pH / redox / conductivity measurement

pH Pal Plus pH Tester

• range: 0 to 14 pH
• resolution: 0.1 pH
• accuracy: ±0.2 pH
• battery: 4 x 1.5 volt LR44 button cell
• battery life: 150 hours
• automatic power off after ten minutes
• display: 8 mm LCD
• dimensions 15 x 32 x 170 mm
• weight 70 grams

MicroDirect pH/Redox Meter

The MicroDirect pH series is a range of waterproof and dust-tight (IP67) units for measuring pH value and redox. The compact, robust housing and the electrode replacement option meet the high standards required of state-of-the-art technology.

All units are equipped with an automatic switch-off and a "Hold" function which "freezes" the result in the display with a single keypress.

The range includes several versions with different measuring ranges and levels of accuracy for different applications.

Operation temperature: 0-50 °C

Battery capacity: > 150 h

MicroDirect pH2

• Range: 0 to14
• Resolution: 0.1
• Accuracy: +/-0.1
• Calibration: 3 Points
• with temperature compensation

MicroDirect pH30

• Range: 0 to 14
• Resolution: 0.01
• Accuracy: +/-0.01
• Calibration: 3 Points
• with temperature compensation

MicroDirect ORP/Redox

• Range: -999 to +1000 mV
• Resolution: 1 mV
• Accuracy: 1 % Full Scale
• Calibration: yes

pH meter LAQUAtwin

Employing the same test principle as standard laboratory electrodes, the LAQUAtwin packs all components into a flat sensor chip that's less than 1 mm thick. Accurate reading from only a single drop (min 100 uL for the ref. B712, 50 uL for the ref. B713), in a few seconds.

Applications: Fresh water testing (rain, rivers, lakes,), aquaria, drainage treatment solutions, soil testing, foods testing, cosmetics...

• pH measurement range: 2-12
• pH resolution: 0.01
• waterproof and dustproof (IP67 rated)
• temperature compensation
• calibration: 2 points (pH 4 and 7)
• Automatic power off (30 minutes)

Other version: conductivity (0 to 19.9 mS/cm, Salt 0 to 1.1%, TDS 0 to 9900 ppm), Sodium ion (23 to 2300 mg/L Na+), Calcium ion (40 to 4000 mg/L Ca+), Potassium ion (39 to 3900 mg/L K+), NaCl (01 to 10 % by weight), Nitrate Ion (62 to 6200 mg/L NO3-)

pH-meter Heito PSD 21

• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• pH resolution: 0,01 unit
• redox resolution:1 mV
• button:
  • selection pH/mV
  • zero
  • span
  • temperature correction
• input:
  • BNC connector for de pH or mV sensor, impedance > 10¹²
  • banana connector for a separate reference electrode
• output: 0-5 v standard, 0-2 v or 4-20 mA as option
• ambient operating conditions: 0- 50 °C
• adapter 220 V / 9 V included
• dimensions: 106 x 187 x 54 mm

pH-meter HEITOLAB

• automatic calibration with buffer recognition or manual calibration
• pH and temperature are displayed simultaneously
• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• pH resolution: 0,01 unit
• redox resolution:1 mV
• memorised buffers:pH 4, 7 et 9
• calibration with one or two buffer
• deviation during 24 hours: 0,02 pH
• output: 2 analog outputs 4-20 mA (pH and temperature) and one RS232 interface
• power: 220 V, 50-60 Hz
• dimensions: 225 x 220 x 80 mm
• options: magnetic stirrer with variable speed
• delivered with electrode holder and buffer solutions

pH-meter Heitolab P310

• pH and temperature are displayed simultaneously
• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• temperature range: 0 to 150 °C
• pH resolution: 0,01 unit
• redox resolution:1 mV
• temperature resolution: 0,1 °C
• automatic temperature compensation (manual if there is no Pt100 sensor)
• memorised buffers:pH 4, 7 et 9
• automatic or manual calibration with one or two buffer for pH
• manual calibration with one solution for redox potential
• inputs:
  • BNC connector for the combined electrode, the glas electrode or the metallic electrode
  • one banana connector for the separate reference electrode
• outputs: one RS232 interface and one 0-5 v output standard (or one 0-2 v output in option)
• adapter 220 V / 9 V included
• dimensions: 275 x 208 x 51 mm

pH-meter/Conductivity-meter MPC25

• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• conductivity range: 200 uS, 2000 uS, 20 mS, 200 mS
• pH resolution: 0,01 unité
• redox resolution:1 mV
• cell coefficient adjustment
• buttons:
  • selection pH/mV
  • zero
  • span
  • temperature compensation
• input:
  • BNC connector for the electrodes
  • banana connector for seprate reference electrode
• ambient operating conditions: 0 to 50 °C
• output: 0-2 V, 0-5 V, 4-20 mA to specify at the order
• adapter 220 V / 9 V included

pH-meter/Conductivity-meter Heitolab MPC 350

• pH/mV/conductivity and temperature are displayed simultaneously
• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• conductivity range: 2000 nS, 20 uS, 200 uS, 2000 uS, 20 mS, 200 mS
• automatic and manual range change for the conductivity
• temperature range: 0 to 150 °C
• pH resolution: 0,01 unit
• redox resolution:1 mV
• temperature resolution: 0,1 °C
• automatic or manual calibration with one or two buffer for pH
• manual calibration with one solution for redox potential
• automatic temperature compensation (manual if there is no Pt100 sensor)
• cell coefficient adjustment
• input:
  • BNC and banana connector for the electrodes
  • 5 pins connector for the temperature
• output: RS232 interface and 0 to 5 V standard (or 0 to 2 v in option)
• adapter 220 V / 9 V included
• dimensions: 275 x 208 x 51 mm

pH-meter PPD3

• portable
• calibration with buttons
• pH range: from 0 to 14
• redox range: from -2000 to 2000 mV
• pH resolution: 0,01 unit
• redox resolution: 1 mV
• zero
• span
• manual temperature compensation
• battery 9 V

pH-meter PPD26

• portable
• calibration with buttons
• battery 9 V

Conductimeter CPD37

• portable
• calibration with buttons

Heitomat

• industrial devices with microprocessor and temperature measurement and automatic compensation
• IP65 box or box to insert available
• 2 alarms and 2 analog outputs (4 - 20 mA)
• option RS232
• 3 versions:
  • - pH meter, range 0-14, input for measurement and temperature
  • - Redox, range from -2000 to 2000 mV

pH-meter pHM 200

• range: from 0 to 14
• manual temperature correction
• input impedance>10_¹² ohms
• IP65 box
• manual calibration
• options: threshold with led and relay, 4-20 mA output

Redox potential VM200

• range: from -2000 to 2000 mV
• input impedance>10_¹² ohms
• IP65 box
• manual calibration
• options: threshold with led and relay, 4-20 mA output

Chlorine-meter CLM200

• activ chlorine, free chlorine
• range: from 0 to 20 mg/l (ppm)
• IP65
• manual calibration
• options: threshold with led and relay, 4-20 mA output

Blind transmitter with 4-20 mA output (pH, redox, chlorine)

• power supply through the 4-20 mA current loop
• calibration has to be made on the master
• power supply: 6-40 V DC
• IP65
• dimensions: 110 mm x 75 mm x 60 mm

SensoDirect pH-meter pH110

• range: 0 to 14 pH
• resolution: 0.01 pH
• no temperature compensation
• accuracy: ± 0.07 pH (pH5-pH9), ± 0.1 pH (pH4-pH10), ± 0.2 pH (pH1-pH3.9), ± 0.2 pH (pH10,1-pH13), at 23 ± 5 °C, after calibration
• ambient conditions: 0 to 50 °C, 0 to 80 % humidity (non condensing)
• battery: 9 V-power block
• dimensions: 208 x 110 x 34 mm (L x W x H)

SensoDirect pH-meter pH200

• pH: 0.00 to 14.00
• accuracy: ± 0.01 pH (at nominal temperature, unit ± 1 digit)
• temperature: -10.0 to +110.0 °C
• accuracy: ± 0.2 °C (from -0 to 50 °C), otherwise ± 0.4 °C
• redox (ORP): -1999 to +2000 mV
• relative redox: -1792 to +2206 Rel mV
• accuracy: ± 0.1 % FS (mV or Rel mV)
• input resistance: >10E12 Ohm
• sensor connections: DIN 19262 and two 4 mm banana sockets "Temp" and "Ref"
• input current: <1 pA
• nominal temperature: 25 °C
• operating temperature: 0 to +50 °C
• storage temperature: -20 to +70 °C
• power supply: 4 x 1.5V battery, type AA Operating time up to >15,000h
• power consumption: 0.2 mA
• automatic off function: 0 - 120 minutes
• calibration: 1-, 2- or 3-point calibration with auto buffer recognition Tintometer buffer, DIN buffer or user-selectable buffer
• dimensions: 175 x 140 x 45 mm (L x W x H)

ISFET pH Meter Sentron SI400

Sentron pH meters have a modern, intuitive and user friendly interface that allows users to quickly access the meters advanced features and settings. During menu navigation pH and temperature data remains visible, so monitoring does not stop when settings are changed or options selected. The large 3.2'' LCD colour display ensures measurement values and menu options are easy to read.

It is dust and splash waterproof and has a rubber boot that helps to absorb shocks. The USB port is well protected by a tightly sealing cover and the casing and battery door are fitted with rubber seals. The position of the ISFET and reference electrode has been designed to be clog and pollution resistant. In the event debris has accumulated on the sensor it can be easily cleaned with water and a brush.

for more details about the ISFET probes

technical description

• pH range: 0-14
• pH accuracy: +/- 0.01
• pH resolution: 0.01
• temperature range: -5 to 120 °C
• temperature accuracy: 0.5 °C
• temperature resolution: 0.1 °C
• calibration: 1 or 2 points
• offset: 0 to 9.99
• memory for current measurement (by pressind a button): 10 values
• operation on rechargeable batteries: 8 h (can also be connected permanetly on the power network with the charger)
• IP 65
• langages: english, dutch, french, german, spanish

ISFET pH Meter Sentron SI600

The SI600 has the same standard functions as the SI400 version. It has a more has advanced data acquisition capabilities, that permit extensive storage of measured data points and continuous data logging at a user defined time interval.

Stored and logged data points can be transmitted to a PC through the USB port and with suitable software the meters momentary pH value and temperature can be queried.

for more details about the ISFET probes

technical description

• pH range: 0-14
• pH accuracy: +/- 0.01
• pH resolution: 0.01
• temperature range: -5 to 120 °C
• temperature accuracy: 0.5 °C
• temperature resolution: 0.1 °C
• calibration: 1, 2, 3, 4 or 5 points
• offset: 0 to 9.99
• memory for current measurement (by pressind a button): 500 values
• automatically stored values at a user definable rate (1-60 sec): 65000 values
• operation on rechargeable batteries: 8 h (can also be connected permanetly on the power network with the charger)
• IP 65
• langages: english, dutch, french, german, spanish

pH MARKER, ISFET precision pH meter

• measurement range: 0 to 14 pH unit and 0 to 60°C
• very easy to clean (with brush and soap)
• no storage limitation (reference electrode is solid)
• measurement in very small volumes is possible
• manual or automatic calibration (pH4, pH7 et pH10)
• possibilty de measure in fatty and half solid materials
• drift: 0.009 pH/hour
• respons time: smaller as 2 seconds
• lifetime : 3 years or 5000 measurements
• precision : +/- 0.1pH and +/- 1°C after calibration
• voltage : 9V, consumption : 1.4mA
• weight : 130 g (with batteries)
• dimensions : 17.5 x 3.3 x 2.2 cm
• working temperature : 0°C to 50°C

pH-Meter Knick Portavo 907

• Multiparameter portable meter with additional analog pH measurement capability.
• For all digital Memosens pH, conductivity and oxygen sensors (galvanic and optical method) and for analog pH electrodes.
• High-resolution color graphic display
• Li-ion battery
• Micro USB port and Paraly SW 112 software
• A sensor quiver protects the sensor from damage and drying out
• Intelligent data logger with 10 000 entries and graphical representation
• Memosens sensors and analog pH sensors can be used on one device (e.g flat-membrane sensors)
• IP 67 / IP 66 protection

pH-Meter and pH-Controller Protos 3400

Modular hardware and software system for liquid analysis, in practical housing designs

Protos 3400 S, tightly sealed stainless steel housing

Protos 3400 C, robust, corrosion resistant coated steel housing

Power supply: 20 - 265 V AC/DC

SMARTMEDIA card for saving and transmission of parameter settings, software updates, and measuring data

2 current outputs and 4 relay contacts in the basic model

explosion protection: II 2(1) GD Ex me ib [ia] IIC T4 T 70 °C

Recorder function

Available modules:

• pH measuring module with recorder
• conductivity measuring module for 2 or 4 electrodes sensors, with recorder
• oyxgen measuring module
• general output module with 4 freely definable relay outputs and 2 additional passive analogs outputs
• communication module for Profibus or FOUNDATION Fieldbus
• PID controller module
• module to connect digital Memosens® sensors

PreSens Sensor Spot, non invasiv pH sensor

they are attached to the inner surface of any transparent vessel. Differents dyes are included in a matrix. A detector measures the modification of the fluorescence emmited from the dye depending on the pH.

for shake flask, tubes, petri dishes and cultivation bags. pH measurement without contact.

advantages

• non invasiv
• no sampling necessary
• calibration free
• can be delivered sterilised by beta irradiation

specifications

• pH range: 5.5 to 8.5
• respons time: 30 s
• accurancy at pH=7: 0.05 with sensor calibration, 0.1 with batch calibration
• temperature range: 5 to 50 °C

transmitters

pH-1 mini: a precise single-channel, temperature compensated pH meter. It is used with pH sensors based on a 2 mm optical fiber. A PC is connected to run the easy-to-use software. On top, analogue outputs and a trigger input are integrated.

pH-4 mini and pH-10 mini: 4 and 10 channels version

please visit also the page about flasks with integrated pH

PreSens Micro pH-probe

sensor tip diameter smaller as 150 um

no need of reference electrode

different types

• needle type, optimal for penetration in tissues, septum rubber. After penetration, he sensor tip is extended for measurement
• implantable, only the fiber. As it is metal free, it can be used in NMR environnement

applications

• measurement of pH in animal and plant tissues
• measurement in small volumes

PreSens SDR SensorDish Reader - HydroDish

detects pH in multidishes non-invasively. These contain a sensor spot at the bottom of each well. They are read out non-invasively through the transparent bottom. It is available in the 24-well and 6-well format. It can be used in incubators and on shakers and is thus the ideal tool for cell cultivation.

Up to 10 units can be controlled by the user-friendly software. pH kinetics are visualized in real-time during the entire cultivation.

Using chemical optical sensors, culture parameters can be monitored noninvasively. The sensor spots are mounted inside the plates and measurements are taken through the transparent bottom. Therefore, optical sensors are minimizing the number of parts that need to be discarded.

PreSens SFR - Shake Flask Reader

The SFR - Shake Flask Reader monitors oxygen and pH in up to 9 shake flasks simultaneously.

It fits in nearly all standard shakers. The corresponding ready-to-use flasks contain pre-calibrated sensor spots. The system monitors non-invasively through the transparent bottom of the flask. Different types and sizes of flasks are available. Plastic flasks contain pre-calibrated oxygen and pH sensors. They are ready-to-use for one cultivation.

The connection between PC and SFR is wireless. The system is mounted on a conventional shaker and is compatible with nearly all shaking systems.

Presens iTube96Reader

iTubes pH: 50 ml culture tubes with integrated pH sensor spots

iTube body is 50 ml poly propylene tube

iTube pH Adapter: Adapter to mount iTubes pH on the SFR

or ITR iTube 96 Reader: 96-channel pH transmitter for cultivation tubes

PreSens Imaging Solutions VisiSens

Measure and Visualize pH in 2D

For measurement the sample surface is covered with the sensor film, which translates the H+ concentration into a light signal. The sensor response is recorded pixel by pixel with a digital camera. With VisiSens spatial and temporal pH-changes can be monitored.

• Non-invasive mapping of metabolic activity using sensor foils
• Imaging of living samples
• Be able to influence experiment conditions during measurements
• Reliable addressing regions with low or high pH values
• More than 100.000 sensing points within one single image
• USB powered & portable
• Easy evaluation via image processing software

Optrode Dual ESC interface

It converts the reading of chemical optical sensors to electrochemical signals (ECS).

Connected to the electrode input of conventional controllers it expands their functionality to work with chemical optical sensors. In addition 4 - 20 mA outputs are integrated. Pre-calibration data for the chemical optical sensors can easily be entered via barcode. Temperature is compensated by a pre-set temperature or via the integrated temperature sensor. The Optrode Dual can be connected to any oxygen sensor type PSt3, and pH sensors type HP5 and HP8.

pH Optrode

• type HP5 / HP8, output -321 to 321 mV
• range: pH 2 to 12

O2 Optrode

• type PSt3, output 60 nA at 25 °C (like Clark electrode)
• range: 0 to 100 % saturation

Temperature measurement: 0-50 °C (Sensor: 4-wire, PT100, Class A)

Can be used with PresensSensor Spots O2 / pH, Flow-Through Cells O2 / pH, Oxygen Dipping Probe

see here for O2 optrodes

MicroLogPRO data logger for pH measurement

• 10-bit Data Logger for temperature, humidity and optional for pH measurement.
• memory Capacity with 3 sensors: 16 000 samples / sensor
• temperature range: 40 to 80 °C (MicrologPro 700 and 750)
• humidity range: 0 to 100% rH (MicrologPro 750)
• pH range: 1-14
• pH resolution: 0.02
• connexion to the PC: USB 1.1
• power Supply: Internal Lithium battery 3.6 V, 1/2 AA, 1.2 AH
• battery Life: Approximately 24 months
• weight: 55 g

Amplifier for pH and redox type M2920

• Range: 0 to 14 pH, -1000 to +1000 mV
• Output 4 to 20 mA, 2-wire techniques
• Input impedance: 1000 Gohm
• Power: 24 V DC
• Options: temperature compensation to 120 ° C for connecting digital sensors from Mettler Toledo

pH buffer solutions

Buffer solutions are available for 4.01, 7.00 and 10.01 pH.

All solutions are supplied in 100 ml bottles.

pH buffer capsules

These DIY pH buffer capsules are available in three standard values, 4.00, 7.00 and 9.00 pH.

Each capsule makes 100 ml of solution when mixed with distilled water.

Supplied in packs of ten capsules.

You can also look at probes or ask to Sysmatec