Laboratories

Q: Which is the best laboratory thermometer?

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Q: What is a laboratory thermometer?

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Q: What is the difference between a medical thermometer and a lab thermometer?

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Q: What is a laboratory thermometer used to measure?

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Q: Are spirit-filled thermometers good for laboratories?

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Q: Are ETI’s laboratory thermometers calibrated?

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High accuracy RTD/PT100 laboratory thermometers, data loggers and pH meters for temperature control, testing and storage.

Keep laboratory processes accurate and controlled with ETI’s precise measurement instruments.

Our high-accuracy laboratory thermometers are designed and made in Britain and come with free UKAS or traceable calibration certificates to ensure dependable results in laboratory environments. Ideal for calibrating instruments, testing samples, and checking stored items.

ETI also has a range of British-made pH meters featuring high-accuracy readings, switchable probes, auto-calibration, and temperature compensation. Plus, data loggers with ambient temperature and humidity sensors for environmental monitoring, or probes for continuous process tracking.

PT100 - Penetration Probe with T-shaped Handle - 6.35 mm

Precise Laboratory Thermometers

Accurate measurement is essential for achieving reliable, repeatable results in laboratories, research facilities and testing environments. Whether you're monitoring temperature and pH during chemical reactions, checking storage conditions or validating processes, precise instruments help you maintain quality, consistency and compliance.

You need reliable equipment to deliver fast, accurate readings across a wide range of laboratory applications. From digital thermometers and PT100 systems to pH meters, the right instruments support efficient testing, quality control and confident decision-making.

ETI's range of laboratory instruments includes high-accuracy thermometers, PT100 systems and pH meters designed for professional use in laboratories, food production, industrial processing and research environments.

Reference Thermapen – High Resolution, High Accuracy Thermometer

Why Laboratory Monitoring Matters

Accurate results depend on stable conditions

Small changes in temperature or pH can affect chemical reactions and testing outcomes.

Supports compliance and quality standards

Documented pH and temperature help laboratories stay compliant and maintain quality control.

Early detection reduces risk

Continuous monitoring helps teams identify unexpected changes before they impact samples, processes or stored materials.

Improves consistency and repeatability

Accurate, calibrated instruments help laboratories produce dependable results.

Maintains confidence in data

Trusted measurements support better decision-making, reliable reporting and greater confidence in laboratory findings.

ThermaData® WiFi Logger with Probe & Internal Sensor

ETI’s Laboratory Thermometers & pH Meters

High-accuracy thermometers

RTD/PT100 thermometers and probes with accuracies up to ±0.03 °C for precise testing. Made in the UK with a 2-year guarantee and calibration certificate.

UK-made data loggers

USB and wireless data loggers for continual temperature and humidity monitoring. Free ThermaData Hub software. Varying probe options available.

Precise pH meters

pH and conductivity meters designed for laboratory testing. Accuracy up to ±0.02 pH.

Pharma thermometers

Fridge thermometers and WiFi loggers with specialised probes that mimic vaccines and liquid samples.

Frequently Asked Questions

Which is the best laboratory thermometer?

ETI’s RTD/PT100 Reference Thermometer is the best digital laboratory thermometer. It has a high system accuracy of ±0.03 °C.

With a free 5-point UKAS calibration certificate and 0.01 °C resolution, it’s designed for extreme precision in laboratory environments and calibration processes.

What is a laboratory thermometer?

A laboratory thermometer is a temperature-measuring instrument designed for scientific, industrial, or testing environments where accuracy and consistency are important.

Modern laboratory thermometers are typically digital and use high-precision sensors such as thermistors, thermocouples, or RTD/PT100 probes. They are used in laboratories to monitor liquids, samples, reactions, storage conditions, and equipment temperatures.

Read our temperature probe guide to learn more about the different types of sensors and find the best probe for your application.

What is the difference between a medical thermometer and a lab thermometer?

A medical thermometer is designed specifically to measure human body temperature within a narrow range, usually around 35 °C to 42 °C.

A laboratory thermometer is designed to operate over a much wider temperature range and is used for scientific testing, research, calibration, and process monitoring.

What is a laboratory thermometer used to measure?

Laboratory thermometers are used to measure the temperature of:

Liquids and solutions
Chemical reactions
Biological samples
Incubators and fridges
Air and ambient conditions
Heated surfaces and equipment

Accurate temperature measurement helps laboratories maintain consistent conditions, validate processes, and ensure reliable results.

Are spirit-filled thermometers good for laboratories?

Spirit-filled thermometers can still be useful in some laboratory settings, particularly for basic or low-risk applications. They use coloured alcohol instead of mercury, making them safer if broken.

However, many modern laboratories prefer digital thermometers because they offer:

Greater accuracy
Faster readings
Easier calibration
Better readability
Data logging capabilities

Spirit-filled thermometers are now more commonly found in education, general monitoring, or as backup instruments rather than in high-precision laboratory work.

Are ETI’s laboratory thermometers calibrated?

Yes, all of ETI’s UK-manufactured thermometers come with a free traceable calibration certificate, and our high-accuracy reference thermometers come with a free 5-point UKAS calibration certificate.

Instruments can be sent to ETI’s UKAS calibration laboratory for routine recalibration to maintain accuracy.

Laboratories

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ThermaData® WiFi 2-Channel Thermocouple Logger

Reference Calibration Thermometer

pH PAL Plus Meter

ThermaData® Thermocouple Logger

ThermaCheck Thermistor Thermometer with Probe

ThermaData® WiFi Pharm Data Logger

Reference Thermapen – High Resolution, High Accuracy Thermometer

ThermaData® Thermistor Loggers | Probe or Room Sensor with internal sensor

PT100 Test Caps

MicroCal 1

ThermaData® Thermistor Loggers | Probe or Room Sensor with external sensor

ThermaGuard Pharm Vaccine Thermometers

TempTest® Plus Blue Thermometer

Precise Laboratory Thermometers

Why Laboratory Monitoring Matters

Accurate results depend on stable conditions