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Dissolved Oxygen Meters

Dissolved Oxygen Meters

Benchtop or portable instruments, probes, and sensors used to measure dissolved oxygen in water and other solutions; typically used to determine oxygen saturation or biological oxygen demand (BOD), a measure of biodegradable material in the sample.
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1 – 15 of 26 results
1

Fisherbrand™ Traceable™ Portable Dissolved Oxygen Meter

Traceable™ Portable Dissolved Oxygen Meter is traceable to NIST™ standards.

Promotions are available
2

Thermo Scientific™ Eutech™ DO 450 Dissolved Oxygen Meter

Eutech™ offers a wide range of Dissolved Oxygen (DO) meters and probes for use in various educational, laboratory and industrial applications. 

Promotions are available
Accuracy (DO) ±2 %; ±0.1 ppm or mg/L up to 8; ±0.2 ppm or mg/L above 8
Temperature (Metric) Range 0.0°C to 50.0°C
Memory Stores up to 500 data sets
AC Adapter Optional
Battery Type Two AA batteries (included)
Resolution (RDO) 0.10 %; 0.1 ppm/mg/L
Includes Pressure & Salinity Compensation = Manual
Time and date stamp on calibration and stored data
Range (RDO) 0 to 200 %; 0 to 20 ppm/mg/L
Battery Life > 100 hours (without backlight)
Temperature Compensation Yes
Dimensions (L x W x H) Meter: 7 7/8 x 3 1/8 x 2 1/4 in (20 x 8.3 x 5.7 cm), Boxed: 9 1/8 x 9 1/8 x 2 3/4 in (23 x 23 x 7 cm)
Display Type Custom LCD with Backlight
IP Rating IP-67
Temperature (English) Range 0.0°F to 122.0°F
Outputs USB or RS232
Resolution (DO) 0.10 %; 0.1 ppm/mg/L
Calibration Modes DO: Zero and saturation
Weight (English) Meter: 1 lb., Boxed: 1.4 lb.
Temperature Probe Calibration Offset in 0.1 increments, ±10 ºC or ±18 ºF
Resolution (Temperature) 0.1°C (0.1°F)
Range (Polarographic DO) 0 mg/L to 20 mg/L
Accuracy (Temperature) ±0.5 ºC; ±0.9 ºF
Range (DO) 0 to 200 %; 0 to 20 ppm/mg/L
Accuracy (RDO) ±2 %; ±0.1 ppm or mg/L up to 8; ±0.2 ppm or mg/L above 8
Weight (Metric) Meter: 0.5 kg, Boxed: 0.7 kg
3

Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter
BIOPHARMA

Take simple dissolved oxygen and temperature measurements with this portable meter with easy operation for basic field testing.

Temperature (Metric) Range 0.0°C to 50.0°C
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 450 to 850mmHg (manual entry)
Memory Non-volatile memory preserves log and settings
Languages English
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature)
Channels 1
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction 450 to 850mmHg, automatic with manual entry
Battery Life 2000 hours
Data Management Details Internal data point memory
Display Type LCD
Data Points 50
Calibration Modes Water-saturated air, manual (Winkler titration)
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Inputs 9 pin MiniDIN (polarographic DO sensor with built-in temperature)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.5 kg
Salinity Factor 0 to 45 ppt, automatic correction using manual entry of sample salinity
Stability Smart Stability and Smart Averaging
Warranty 3 Year Meter Warranty
Temperature (English) Operating 41°F to 113°F (ambient)
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Sensor Types Polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO 0.0 to 200.0 % saturation
Log Function Type Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
Battery Type Four AA (included)
Relative Humidity Range 5 to 85 %, non-condensing
Dimensions (L x W x H) 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
IP Rating IP-67
Temperature Selection Automatic with ATC temperature probe
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Keypad Simple with highlighted measure key, scroll and shortcut keys
Model Orion Star A123 Dissolved Oxygen/Temperature Portable Meter
Outputs None
Weight (English) 2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Range (Polarographic DO) 0.00 to 20.00 mg/L
Percent Saturation Range (Polarographic DO) 0.0 to 200.0 % saturation
4

Thermo Scientific™ Eutech™ DO 450 Dissolved Oxygen Meter Kit

Eutech™ offers a wide range of Dissolved Oxygen (DO) meters and probes that measure the amount of gaseous oxygen dissolved in a solution in various educational, laboratory and industrial applications. 

Promotions are available
5

Thermo Scientific™ Eutech™ DO 6+ Dissolved Oxygen Meter

Eutech™ offers a wide range of Dissolved Oxygen (DO) meters and probes that measure the amount of gaseous oxygen dissolved in a solution in various educational, laboratory and industrial applications. 

6

Thermo Scientific™ Orion Lab Star DO Dissolved Oxygen Bench Meters

Orion Lab Star DO113 dissolved oxygen bench meters measure DO as % saturation or concentration with temperature, feature large backlit display for easy viewability, and offer small footprint to save bench space. This DO meter is ideal for simplified, budget-friendly lab testing and data recording.

Promotions are available
Temperature (Metric) Range -5.0°C to +105.0°C
Resolution (Polarographic DO) 0.1, 1 % saturation; 0.01, 0.1 mg/L or ppm
Pressure Range 400.0 to 850.0 mmHg; 0.533 to 1.133 bar
Memory Non-volatile
Measurement Modes Dissolved Oxygen (% Saturation with Temperature),Dissolved Oxygen (mg/L with Temperature),Dissolved Oxygen (ppm with Temperature)
Data Management Details Continuous, Auto-Read and Timed read modes
Display Type 5 in. backlit LCD
Data Points 500 data sets with time and date
Calibration Modes 100 % saturation, 0 % saturation, custom concentration value
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Accuracy (Temperature) ±0.3°C, ±0.5°F
Weight (Metric) 700 grams
Warranty 3 year meter warranty
AC Adapter Universal 100-240 V 50/60 Hz power supply with twist-and-lock meter connection and interchangeable wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets
Sensor Types Polarographic
Percent Saturation Range Polarographic DO 0.0 to 300.0 % saturation
Log Function Type Automatic with Auto-Read and Timed read modes, manual with Continuous read mode
Relative Humidity Range 5 to 85%, non-condensing
Alarm Output Calibration reminder alarm
Dimensions (L x W x H) 187.2 x 155.2 x 61.7 mm, 7.37 x 6.11 x 2.43 in.
IP Rating IP54
Temperature Selection Manual or automatic with ATC temperature probe
Outputs Computer or printer (STARA-106)
Backlight Option Yes
Weight (English) 1.54 lb.
Resolution (Temperature) 0.1°C, 0.1°F
Range (Polarographic DO) 0.0 to 300.0 % saturation; 0.00 to 30.0 mg/L or ppm
9

Thermo Scientific™ Eutech™ CyberScan DO 600 Dissolved Oxygen Meter

For quick, accurate dissolved oxygen checks in laboratories, field and schools.

10

Thermo Scientific™ Orion™ Versa Star Pro™ DO Benchtop Meter
BIOPHARMA

Get premium performance and flexibility with this benchtop meter with module for dissolved oxygen (optical/polarographic) and temperature.

Power Rating DC input: 9VDC, 1A
Temperature (Metric) Range -5.0°C to +105.0°C
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German, Chinese, Portuguese and Korean
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
Power Supply Universal AC adapter (included)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Color graphic LCD with user-customizable options
Data Points 2000 with date and time stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Salinity Factor 0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Warranty 3 year meter and module warranty
Sensor Types RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO 0.0 to 600.0 % saturation
Log Function Type Automatic data logging with Auto-Read, Timed and Single Shot measure modes; manual data logging with
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00 mg/L
Dimensions (L x W x H) 28 cm x 24 cm x 10 cm (11 in. x 9.5 in. x 3.9 in.), modules add ≤ 2 cm (0.8 in.) L & H
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Temperature Selection Automatic with ATC temperature probe
Keypad Numeric with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB (2), RS232
Backlight Option Yes
Percent Saturation Relative Accuracy (RDO) ±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO) 0.00 to 90.00 mg/L
Accuracy (Barometer) ±6mmHg
Methods 10 per channel
Pressure Resolution 0.1mmHg
Channels 4 - customizable with modules
Resolution (RDO) 0.01, 0.1mg/L
Percent Saturation Resolution (RDO) 0.1, 1 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Inputs 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature), two stirrer inputs (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 1.2 kg, modules add 0.2 kg each
Temperature (English) Operating 41°F to 113°F (ambient)
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. STARA-PWR)
Alarm Output Set point alarm, high/low limit alarm, calibration due alarm
IP Rating IP-54
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Weight (English) 2.5 lb., modules add 0.5 lb. each
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Percent Saturation Range (Polarographic DO) 0.0 to 600.0 % saturation
Accuracy (RDO) ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
11

Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen Portable Meter
BIOPHARMA

Accurately monitor dissolved oxygen (optical/polarographic) and temperature with this RDO/DO portable meter for challenging field testing.

Promotions are available
Temperature (Metric) Range 0.0°C to 50.0°C
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Battery Life 800 hours
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Graphic LCD with Backlight
Data Points 5000 with date and time stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Salinity Factor 0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Warranty 3 Year Meter Warranty
Sensor Types RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO 0.0 to 600.0 % saturation
Log Function Type Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
Battery Type Four AA (included)
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00 mg/L
Dimensions (L x W x H) 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Temperature Selection Automatic with ATC temperature probe
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS232
Backlight Option Yes, selectable
Percent Saturation Relative Accuracy (RDO) ±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO) 0.00 to 90.00 mg/L
Accuracy (Barometer) ±6mmHg
Methods 10 per channel with password protection
Pressure Resolution 1mmHg
Channels 1
Resolution (RDO) 0.01, 0.1mg/L
Percent Saturation Resolution (RDO) 0.1, 1 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Inputs 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.5 kg
Temperature (English) Operating 41°F to 113°F (ambient)
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Alarm Output High/low limit alarm, calibration due alarm
IP Rating IP-67
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Model Orion Star A323 RDO Optical/Dissolved Oxygen/Temperature Portable Meter
Weight (English) 1.2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Percent Saturation Range (Polarographic DO) 0.0 to 600.0 % saturation
Accuracy (RDO) ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
12

Thermo Scientific™ Orion Star™ A213 Dissolved Oxygen Benchtop Meter
BIOPHARMA

Reliably measure dissolved oxygen (RDO optical/polarographic) and temperature with this benchtop meter for advanced lab analysis.

Promotions are available
Temperature (Metric) Range 0.0°C to 50.0°C
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
Power Supply Universal AC adapter (included) or 4 AA batteries (sold separately)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Battery Life 800 hours
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Graphic LCD with Backlight
Data Points 2000 with date and time stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Salinity Factor 0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Warranty 3 Year Meter Warranty
Sensor Types RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO 0.0 to 600.0 % saturation
Log Function Type Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
Battery Type Four AA (sold separately)
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00 mg/L
Dimensions (L x W x H) 24 cm x 18 cm x 11 cm (9.5 in. x 7.1 in. x 4.3 in.)
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Temperature Selection Automatic with ATC temperature probe
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS232
Backlight Option Yes, selectable
Percent Saturation Relative Accuracy (RDO) ±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO) 0.00 to 90.00 mg/L
Accuracy (Barometer) ±6mmHg
Methods 10 per channel with password protection
Pressure Resolution 1mmHg
Channels 1
Resolution (RDO) 0.01, 0.1mg/L
Percent Saturation Resolution (RDO) 0.1, 1 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Inputs 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature), stirrer input (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.9 kg
Temperature (English) Operating 41°F to 113°F (ambient)
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. 1010003)
Alarm Output High/low limit alarm, calibration due alarm
IP Rating IP-54
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Model Orion Star A213 RDO Optical/Dissolved Oxygen/Temperature Benchtop Meter
Weight (English) 2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Percent Saturation Range (Polarographic DO) 0.0 to 600.0 % saturation
Accuracy (RDO) ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
13

Thermo Scientific™ Orion Star™ A223 Dissolved Oxygen Portable Meter
BIOPHARMA

Reliably measure dissolved oxygen (optical/polarographic) and temperature with this RDO/DO portable meter for advanced field analysis.

Promotions are available
Temperature (Metric) Range 0.0°C to 50.0°C
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Battery Life 800 hours
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Graphic LCD with Backlight
Data Points 1000 with date and time stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Salinity Factor 0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability Smart Stability and Smart Averaging
Warranty 3 Year Meter Warranty
Sensor Types RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO 0.0 to 600.0 % saturation
Log Function Type Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
Battery Type Four AA (included)
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00 mg/L
Dimensions (L x W x H) 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Temperature Selection Automatic with ATC temperature probe
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS232
Backlight Option Yes, selectable
Percent Saturation Relative Accuracy (RDO) ±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO) 0.00 to 90.00 mg/L
Accuracy (Barometer) ±6mmHg
Methods 10 per channel with password protection
Pressure Resolution 1mmHg
Channels 1
Resolution (RDO) 0.01, 0.1mg/L
Percent Saturation Resolution (RDO) 0.1, 1 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Inputs 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.5 kg
Temperature (English) Operating 41°F to 113°F (ambient)
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Alarm Output Calibration due alarm (fixed 12 hour)
IP Rating IP-67
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Model Orion Star A223 RDO Optical/Dissolved Oxygen/Temperature Portable Meter
Weight (English) 1.2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Percent Saturation Range (Polarographic DO) 0.0 to 600.0 % saturation
Accuracy (RDO) ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
14

Thermo Scientific™ Eutech™ CyberScan DO 600 Dissolved Oxygen Meter

For quick, accurate dissolved oxygen checks in laboratories, field and schools.

15

Thermo Scientific™ Eutech™ DO 6+ Dissolved Oxygen Meter ECDO601PLUSK

Eutech™ offers a wide range of Dissolved Oxygen (DO) meters and probes that measure the amount of gaseous oxygen dissolved in a solution in various educational, laboratory and industrial applications. 

Promotions are available