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Lab & Scientific Products - 14 - Blowout Sale! Save up to 73%


Blowout Sale! Up to 73% off on Lab & Scientific Products at Graph Barometer. Top brands include Apera Instruments, LLC, Hach Company, Oakton, Milwaukee, HHTD, Hanna Instruments, Extech, Kestrel, YSI, Myron L, REED Instruments, Testo, ORION, & Digi-Sense. Hurry! Limited time offers. Offers valid only while supplies last.



Apera Instruments AI521 Ph800 Laboratory Benchtop Ph/Temperature Meter Kit, 0.01 Ph Accuracy, GLP Data Management (USB output), Plastic/Glass
Apera Instruments AI521 Ph800 Laboratory Benchtop Ph/Temperature Meter Kit, 0.01 Ph Accuracy, GLP Data Management (USB output), Plastic/Glass
In Stock
$412.90

mpn: AI521, ean: 0858718006186,

The Apera Instruments PH800 Laboratory Benchtop Meter provides reliable pH measurements of regular water solutions for scientific research and quality control with a durable structure and various intelligent functions. Equipped with Apera’s 3-in-1 ...


Hach 5870000 Pocket Colorimeter II, Chlorine (Free and Total)
Hach 5870000 Pocket Colorimeter II, Chlorine (Free and Total)
In Stock
$456.81
$445.00
You Save: 3%

mpn: 5870000,

Hach 5870000 Pocket Colorimeter II, Chlorine (Free and Total)Single Parameter go anywhere portable photometer. USEPA approved for drinking water and wastewater. Factory-Programmed. Waterproof, Lightweight, Rugged. Backlit Display, Data Logging, Recal...


Hach HQ40D53000000 HQ40d Portable pH/Conductivity/Optical Dissolved Oxygen/ORP/ISE Multi-Parameter Meter
Hach HQ40D53000000 HQ40d Portable pH/Conductivity/Optical Dissolved Oxygen/ORP/ISE Multi-Parameter Meter
In Stock
$1,187.61
$1,100.00
You Save: 7%

mpn: HQ40D53000000,

4.7 out of 5 stars with 53 reviews
Hach HQ40D53000000 HQ40d Portable pH/Conductivity/Optical Dissolved Oxygen/ORP/ISE Multi-Parameter MeterPortable meter measures critical water quality parameters - without the need for multiple instruments. Intuitive user interface for simple operati...


Oakton WD-35613-22 Oakton 6+ Meter with Single-Junction, Sealed, Epoxy-Body Electrode, ATC Probe, Rubber Boot and Batteries
Oakton WD-35613-22 Oakton 6+ Meter with Single-Junction, Sealed, Epoxy-Body Electrode, ATC Probe, Rubber Boot and Batteries
In Stock
$316.00
$262.69
You Save: 17%

mpn: WD-35613-22,

4.1 out of 5 stars with 50 reviews
Achieve professional results at an economical price! the microprocessor-based pH 6+ meter gives you high accuracy and reliability. Use this meter to take pH, mV and temperature measurements. The millivolt readout lets you take ORP readings. Meter inc...


Milwaukee Mi106 Portable pH/ORP/Temperature Meter, -2.00 - 16.00 pH, +/- 0.02 pH Accuracy, 0.01 pH Resolution
Milwaukee Mi106 Portable pH/ORP/Temperature Meter, -2.00 - 16.00 pH, +/- 0.02 pH Accuracy, 0.01 pH Resolution
SKU: #MI106
In Stock
$408.50
$222.22
You Save: 46%

sku: MI106, mpn: Mi106, ean: 0810666000166,

4.9 out of 5 stars with 54 reviews
The Milwaukee Mi106 portable extended range meter with probe displays pH with temperature or ORP (oxidation reduction potential) with temperature on the dual-reading screen for a range of measurements in the field. A meter that measures ORP monitors ...


Milwaukee pH58 LED Combination Waterproof Pocket pH/ORP/Temp Tester with Replaceable Electrode, -2.00 to 16.00 pH, +/-0.05 pH Accuracy, 0.01 pH Resolution
Milwaukee pH58 LED Combination Waterproof Pocket pH/ORP/Temp Tester with Replaceable Electrode, -2.00 to 16.00 pH, +/-0.05 pH Accuracy, 0.01 pH Resolution
SKU: #PH58
In Stock
$124.00

sku: PH58, mpn: pH58, ean: 0810666001583,

Milwaukee pH58 LED Combination Waterproof Pocket pH/ORP/Temp Tester with Replaceable Electrode, -2.00 to 16.00 pH, +/-0.05 pH Accuracy, 0.01 pH Resolution is convenient and easy to use.0.01 pH Resolution. Easy to use. ...


Digital Coffee Concentration Refractometer , Brix & TDS Densitometer Meter
Digital Coffee Concentration Refractometer , Brix & TDS Densitometer Meter
By HHTD
In Stock
$199.99

mpn: CFTEST018, ean: 0723740020991,

1.Power On: Press key "READ" 1 second only. 2. Scale converting: press key "SCALE" 1 second to choose the unit Brix or Concentration, "S01" is for Brix %, this also can test all liquid with sugar such as juice, milky tea ect, range is 0-30%. "S02" i...


Hanna Instruments HI98129 Meter, pH/EC/TDS/Temp , 10'' Height, 11'' Wide, 20'' Length
Hanna Instruments HI98129 Meter, pH/EC/TDS/Temp , 10" Height, 11" Wide, 20" Length
In Stock
$150.00

mpn: HI98129, ean: 4016138134506,

This is range: 0.00 to 14.00 pH/0 to 3999 us/cm/0 to 2000 ppm/0.0 to 60.0°C/32 to 140.0°F with resolution: 0.01 pH/1 us/cm/1 ppm/0.1°C/0.1°F and accuracy: ±0.05 pH/±2 percent F.Use./±0.5°C/±1°fmeets customer requirement.Made in United State...


Extech 341350A-P Oyster Series pH/Conductivity/TDS/ORP/Salinity Meter
Extech 341350A-P Oyster Series pH/Conductivity/TDS/ORP/Salinity Meter
In Stock
$479.99

mpn: 341350A-P, ean: 0793950343524,

Extech 341350A-P Oyster Series pH/Conductivity/TDS/ORP/Salinity Meter, Large LCD built into adjustable "flip-up" cover displays measurement and Temperature simultaneously 341350A-P is a pH/Conductivity/TDS/ORP/Salinity meter with a large LCD built in...


Kestrel 0852HVG 5200 Professional Environmental Meter, 5.1' Height, 1' Wide, 1.9' Length
Kestrel 0852HVG 5200 Professional Environmental Meter, 5.1' Height, 1' Wide, 1.9' Length
In Stock
$282.45
$245.44
You Save: 13%

mpn: 0852HVG, ean: 0730650001903,

4.4 out of 5 stars with 51 reviews
Kestrel 0852HVG 5200 Professional Environmental Meter, 5.1' Height, 1' Wide, 1.9' LengthThe Kestrel 5200 Pocket Weather Meter is Kestrel's Professional meter with the intended markets of construction, pouring concrete, balancing HVAC systems, and spr...


YSI pH10A pH 0A pH/Temperature Pen Tester
YSI pH10A pH 0A pH/Temperature Pen Tester
By YSI
In Stock
$124.51
$114.00
You Save: 8%

mpn: pH10A,

4.7 out of 5 stars with 12 reviews
The EcoSense pH10A pen-style instrument provides an ultimate feature set over similar competitive models. The pH10A features an easy-to-use graphic interface, simple one-hand operation, memory, and low cost of ownership over the life of the product. ...


YSI ProODO Digital Probe and 1 Meter Cable Assembly for Optical Dissolved Oxygen/Temperature Meter
YSI ProODO Digital Probe and 1 Meter Cable Assembly for Optical Dissolved Oxygen/Temperature Meter
By YSI
In Stock
$683.35

mpn: 626250-1,

YSI ProODO Digital Probe and 1 Meter Cable Assembly for Optical Dissolved Oxygen/Temperature MeterThe ProODO cable's can be ordered in lengths of 1 meters. Cables come with the ODO optical DO sensor and sensing cap. Cables over 1-meter also come with...


Extech MO55 Compact, Combination Pin and Pinless Moisture Meter
Extech MO55 Compact, Combination Pin and Pinless Moisture Meter
In Stock
$128.38
$120.84
You Save: 6%

mpn: MO55,

4.3 out of 5 stars with 20 reviews
Lab Equipment & Instruments. Extech MO55 Compact, Combination Pin and Pinless Moisture Meter. Manufactured by COLE-PARMER. Extech brand products.Lab equipment & instruments. Made in china. Manufactured by COLE-PARMER. ...


Myron L PT1 MyronL ULTRAPEN Conductivity Tester - +/- 1%
Myron L PT1 MyronL ULTRAPEN Conductivity Tester - +/- 1%
In Stock
$153.48
$134.59
You Save: 12%

mpn: 0575405,

4.5 out of 5 stars with 16 reviews
This pen-style pocket Tester delivers accurate and reliable measurements of conductivity, TDS, and salinity. It's easy to use: simply press a button and dip the pen into the solution. The LCD gives you a quick measurement reading, alternating with te...


REED Instruments SD-9300 SD Series Environmental Meter, Datalogger (Air Velocity/Temp, Light, Ambient Temperature, Humidity)
REED Instruments SD-9300 SD Series Environmental Meter, Datalogger (Air Velocity/Temp, Light, Ambient Temperature, Humidity)
In Stock
$259.00
$239.90
You Save: 7%

mpn: SD-9300,

4.0 out of 5 stars with 32 reviews
This 7-in-1 environmental meter measures air velocity, air temperature, ambient temperature, relative humidity, light and contact temperature measurements. The SD-9300 is also capable of sound level measurements with the SL-417 adapter (optional). Us...


Apera Instruments AI480 DO850 Optical Dissolved Oxygen Meter Kit, with 10 Ft Optical DO Probe, Hassle-Free Testing Experience
Apera Instruments AI480 DO850 Optical Dissolved Oxygen Meter Kit, with 10 Ft Optical DO Probe, Hassle-Free Testing Experience
In Stock
$998.00
$898.75
You Save: 10%

mpn: AI480, ean: 0858718006513,

4.9 out of 5 stars with 58 reviews
Introducing Apera's all-new Optical Dissolved Oxygen Meter. Equipped with state-of-the-art optical DO probe, the DO850 meter generates quick and accurate dissolved oxygen readings in a hassle-free manner. No membrane or solution needed for the optica...


Oakton pH 5+ Handheld Meter with pH Probe
Oakton pH 5+ Handheld Meter with pH Probe
In Stock
$284.61
$254.70
You Save: 11%

mpn: WD-35613-52,

4.9 out of 5 stars with 14 reviews
Oakton WD-35613-52 pH 5+ Handheld Meter with pH ProbeReads pH and temperature. Automatic Temperature Compensation (ATC). All push button operation. Three-point pH calibration. Auto buffer recognition. ...


Testo 0560 0540 Pocket Pro Light Intensity Meter, +/- 3 Accuracy, 2 Type AAA Battery
Testo 0560 0540 Pocket Pro Light Intensity Meter, +/- 3 Accuracy, 2 Type AAA Battery
In Stock
$144.34
$128.40
You Save: 11%

mpn: 0560 0540, ean: 4029547008283,

4.5 out of 5 stars with 19 reviews
The sensor of the testo 540 is similar to the spectral sensitivity of your eye which makes it ideal for measuring actual light intensity. The 540 features a convenient hold function and displays max/min values on a large backlit display. It's a handy...


Orion AQUAfast Turbidity Meter Kit
Orion AQUAfast Turbidity Meter Kit
In Stock
$1,049.69
$284.58
You Save: 73%

mpn: AQ3010,

4.3 out of 5 stars with 34 reviews
Thermo Orion AQUAfast Turbidity Meter Kit. Turbidity meter is perfect for plant, field or lab, this simple, yet powerful turbidity meter offers impressive features. Autoranging from 0 to 1000 NTUs, the AQ3010 meter generates an accurate turbidity rea...


Digi-Sense Data Logging Light Meter with NIST Traceable Calibration
Digi-Sense Data Logging Light Meter with NIST Traceable Calibration
In Stock
$203.52
$189.00
You Save: 7%

mpn: AO-20250-00,

4.0 out of 5 stars with 49 reviews
What's included: USB cable, software CD, canvas carrying case, three AAA batteries, and nist-traceable calibration report with data supplied by in no cal. Ensure lighting standards and increase system efficiencies with precision measurement accuracy ...



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