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

Heathrow Scientific® Lab Dial Thermometers

Accurate temperature measurement.

Heathrow Scientific® Lab Dial Thermometers are designed for precision and durability in laboratory and industrial applications. Featuring an 8 In. stainless steel stem, a large glass dial face, and a secure attachment clip, this thermometer ensures reliable temperature readings across a wide range of scales.

Ideal for food and beverage quality control, general laboratory use, and asphalt/concrete testing, this thermometer combines robust construction with ease of use. Choose from multiple temperature scales to meet your specific requirements.

Main Attributes

• 8 In. stainless steel stem for durability and accuracy
• Large glass dial face for easy reading
• Includes attachment clip for secure placement
• Available in a wide range of temperature scales

Specifications

Heathrow Scientific® Serialized Glass Thermometers

Heathrow Scientific® Serialized Glass Thermometers are crafted from premium borosilicate glass for exceptional durability and accuracy. Each thermometer features a clear, permanently etched scale and a safety blue fill against a white background, ensuring easy-to-read measurements in any setting.

Available in a wide range of temperature ranges, these thermometers are ideal for scientific research, industrial processes, and educational applications.

Main Attributes

• Safety blue fills for enhanced visibility
• Premium borosilicate glass construction
• 12-inch length for convenient handling
• Multiple temperature ranges available
• Approximate Length 12 In. (80905 and 80910 are 15.375 In.) 

Designed for precision and reliability, these serialized thermometers deliver accurate temperature readings you can trust.
 

Heathrow Scientific® Pocket Dial Thermometers

Compact and accurate.

Heathrow Scientific® Pocket Dial Thermometers are the perfect solution for on-the-go temperature measurement in food and beverage quality control, general laboratory use, and asphalt/concrete testing. Its compact design features a small stem and dial face that fit easily into a shirt pocket or holder, making it convenient for field and lab work.

Each thermometer includes a protective stem cover for safe transport and storage. Built with a durable polycarbonate lens, it withstands frequent use and harsh conditions. Available in a wide range of temperature scales to meet diverse application needs.

Main Attributes

• Small stem fits into cover for secure pocket attachment
• Compact design for portability and ease of use
• Durable polycarbonate lens for long-lasting performance
• Includes stem cover for safe transport and storage
• Wide variety of temperature ranges available 

Specifications
 

Item #	Temp. Range	Temp. Resolution	Dial Diameter	Stem Length	Stem Cover
81070	-40 to 70°C	1°C	1 In. | 25 mm	5 In. | 127 mm	Yes
81110	-10 to 110°C	1°C	1 In. | 25 mm	5 In. | 127 mm	Yes
81125	25 to 125°F	1°F	1 In. | 25 mm	5 In. | 127 mm	Yes
81550	50 to 550°F	5°F	1 In. | 25 mm	5 In. | 127 mm	Yes

 

Heathrow Scientific® Hydrometer Cases

Durable PVC protection for your hydrometers.

Keep your hydrometer safe and secure with Heathrow Scientific® Hydrometer Cases. Crafted from high-quality polyvinyl chloride (PVC), these protective cases are designed to prevent damage during storage or transport. Each case features a foam or felt padded insert, plus a padded bottom and cap for extra cushioning. Ideal for laboratories, breweries, and any environment where hydrometers are used, these cases ensure long-lasting protection and convenience when your hydrometer is not in use.

Specifications
 

Item #	Material	Style	Length
66CS-8	PVC	Standard	8.5 In. | 216 mm
66CS-8F	PVC	Short	8.5 In. | 216 mm
66CS-13	PVC	Standard	13.5 In. | 343 mm
66CS-13J	PVC	Wide Body	13.5 In. | 343 mm
66CS-16	PVC	Standard	16.5 In. | 420 mm

 

Heathrow Scientific® Sodium Chloride Refractometers

Accurate NaCl measurement.

The Heathrow Scientific® Sodium Chloride Refractometer is engineered for precise NaCl concentration measurements in industrial and laboratory settings. Featuring large, high-contrast display scales, this refractometer ensures easy readability with sharp figures and clear screen shading.

Includes automatic temperature error reduction via a tactical rubber grip, which prevents heat transfer from hands. A high-quality optical glass prism mounted in an all-metal housing allows for rapid temperature equilibrium for consistent results. A non-roll stand feature is included for stability on flat surfaces.

Each unit includes

• Zippered vinyl carrying case
• Plastic transfer pipette
• Instruction manual
• 5-year warranty 

Main Attributes

• Industrial-grade construction for long-lasting performance
• Large, sharp display scales with excellent contrast
• High-quality optical glass for accurate readings
• Non-slip rubber grip to minimize temperature effects
• Prism encased in a metal housing for quick thermal balance
• Maximum sample temperature: 90°C (194°F)
• Backed by a five-year warranty

Ideal for food processing, chemical analysis, and quality control applications.
 

Heathrow Scientific® MDX Digital Refractometers

The MDX-Series Digital Refractometers deliver compact, durable, and highly accurate performance, making them ideal for both laboratory and field applications. With IP65/67 ratings, these refractometers are built to withstand challenging environments while providing quick, reliable digital readings.

Main Attributes

• Automatic Temperature Compensation (ATC) for precise results
• Continuous loop average readings for improved accuracy
• Switchable °C/°F temperature display
• Large, easy-to-read LCD screen for intuitive operation
• Simple cleaning with removable prism cover and rubber grip
• 1-Year Warranty

How It Works

Place 4 to 5 drops of your sample into the well, close the prism cover, and press READ for instant results. Designed for ease of use, fast cleaning, and dependable performance, the MDX-Series is perfect for food and beverage testing, industrial applications, and scientific research.
 

Heathrow Scientific® Handheld Brix Refractometers

The Heathrow Scientific Handheld Brix Refractometers deliver industrial-grade precision with the largest, easiest-to-read scale available. Featuring sharp figures, screen shading, and high contrast, these refractometers ensure accurate readings, even when used by multiple operators. The optical glass prism is mounted in an all-metal housing, allowing the sample and prism to reach temperature equilibrium quickly for reliable results.

Designed for convenience and durability, these refractometers include a non-roll stand to prevent accidental falls and a rubber grip that blocks heat transfer from the hand, reducing temperature errors. Each unit comes with a zippered vinyl carrying case, plastic transfer pipette, and instruction manual, backed by a five-year warranty.

Main Attributes

• Industrial-grade quality for consistent performance
• Large, high-contrast display scale for easy reading
• High-quality optical glass prism for accurate measurements
• Non-roll stand for secure placement on flat surfaces
• Rubber grip minimizes temperature interference
• Prism encased in all-metal housing for quick temperature equilibrium
• Maximum sample temperature: 90°C (194°F)
• Includes carrying case, pipette, and manual
• Five-year warranty 

Perfect for food and beverage testing, industrial applications, and laboratory use.
 

Heathrow Scientific® Honey Refractometers

Accurate honey quality testing.

Heathrow Scientific® Handheld Honey Refractometers are designed for fast, precise honey analysis. Ideal for beekeepers, honey producers, and quality control labs, this refractometer measures honey moisture content, Brix, and Baume with exceptional accuracy. Featuring Automatic Temperature Compensation (ATC), it ensures reliable readings in varying conditions.

Built with high-quality optical glass and a durable, industrial-grade design, this refractometer offers long-lasting performance. Its non-roll stand feature keeps the unit secure on flat surfaces, while the tactical rubber grip minimizes heat transfer from hands, reducing temperature-related errors. The all-metal prism housing allows quick temperature equilibrium for consistent results.

Each unit includes

• Vinyl carrying case
• Plastic transfer pipette
• Calibration screwdriver
• Operation manual 

Main Attributes

• Large, sharp display scales with high contrast for easy reading
• Measures honey moisture, Brix, and Baume
• Automatic Temperature Compensation (ATC)
• Non-slip rubber grip for stability and accuracy
• Prism encased in metal housing for fast temperature balance
• Maximum sample temperature: 90°C (194°F)
• Backed by a 5-year warranty 

Perfect for professional honey testing and quality assurance.
 

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.

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:

• 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