Machinery Masters is a marketplace for new and used radiation and safety detectors, including Geiger counters, survey meters, dosimeters, and contamination monitors that detect and measure ionising radiation. These instruments protect people and confirm compliance by measuring dose rate, detecting surface contamination, and recording personal exposure across laboratory, nuclear medicine, and industrial settings. From handheld Geiger-Müller survey meters to sensitive scintillation detectors and wearable dosimeters, the category covers the full range of radiation safety measurements. Buyers include radiation protection officers, laboratory and nuclear medicine staff, and health, safety, and procurement teams. Browse verified sellers to compare detector type, radiation measured, calibration, condition, and price before you buy.

Shop Radiation & Safety Detectors by Type

Radiation and safety detectors span survey meters, contamination monitors, and personal dosimeters, each suited to a different measurement task. Selecting the correct type keeps the detector technology, radiation type, and measurement, dose rate, contamination, or accumulated dose matched to your application. The main differences between configurations relate to the sensing technology, the radiation types detected, and whether the instrument measures rate, surface contamination, or personal exposure.

Geiger-Müller Counters and Survey Meters

Geiger-Müller counters use a gas-filled tube that pulses when radiation passes through it, giving a simple, robust count of ionising radiation. Handheld Geiger survey meters are the everyday instruments for checking for radiation and locating sources, widely used across laboratories, nuclear medicine, and industry.

Scintillation Detectors

Scintillation detectors use a crystal or plastic that emits light when struck by radiation, offering higher sensitivity than a Geiger tube and the ability to identify certain radiation types. They suit low-level detection, contamination screening, and applications where sensitivity and energy information matter.

Dose Rate Meters

Dose rate meters measure the rate of radiation exposure in real time, reporting how much dose is being received per unit time. They are essential for area surveys, work planning, and confirming that dose rates stay within safe limits where people work near radiation sources.

Surface Contamination Monitors

Surface contamination monitors detect radioactive contamination on surfaces, equipment, and people using large-area probes for alpha, beta, and gamma emitters. They are central to keeping laboratories and facilities clean, checking work areas, waste, and personnel for contamination.

Personal Dosimeters

Personal dosimeters are worn to record an individual's accumulated radiation dose over time, supporting legal dose monitoring and personnel safety. Electronic and passive dosimeters track exposure so that workers stay within regulated dose limits and their records are documented.

Area and Fixed Radiation Monitors

Area and fixed monitors continuously measure radiation levels at set locations, triggering alarms when a threshold is exceeded. Installed where radiation could be present, they provide permanent, around-the-clock monitoring of controlled areas and process points.

Radiation & Safety Detectors Brands on Machinery Masters

Machinery Masters lists radiation and safety detectors from established radiation measurement manufacturers, so you can source a specific make and model or compare comparable instruments across sellers.

Thermo Fisher Scientific
Mirion Technologies
Ludlum Measurements
Fluke Biomedical
Berthold Technologies
Tracerco
Automess
RaySafe
Polimaster
Bertin Instruments

Radiation & Safety Detectors Applications and Uses

Radiation and safety detectors are deployed across nuclear medicine, laboratory, industrial, and environmental settings wherever ionising radiation must be measured to protect people and meet regulations. Requirements depend on the radiation type, the measurement needed, and the safety framework the site works within.

Radiopharmaceutical and Nuclear Medicine Safety

Nuclear medicine and radiopharmacy departments use survey meters, contamination monitors, and dosimeters to control radiation around radioisotopes and labelled compounds. Reliable detection and dose monitoring protect staff and confirm that handling and disposal meet radiation safety requirements.

Laboratory Radiation Safety

Research and QC laboratories using radioisotopes rely on Geiger counters and contamination monitors to check work areas, equipment, and waste. Routine monitoring keeps the laboratory clean and confirms that radioactive work stays within safe, documented limits.

Environmental and Contamination Monitoring

Environmental and facility teams use radiation monitors and contamination detectors to check sites, materials, and surfaces for radioactivity. Accurate measurement supports both safety and regulatory reporting where radioactive contamination could be present.

Personnel Dose Monitoring

Radiation protection programmes use personal dosimeters to record the exposure of workers over time, supporting legal dose limits and safety records. Continuous personal monitoring ensures that individuals stay within regulated dose thresholds.

Frequently Asked Questions

What is a Geiger counter and how does it work?

A Geiger counter, or Geiger-Müller counter, detects ionising radiation using a gas-filled tube. When radiation passes through the tube, it ionises the gas and produces an electrical pulse, which the instrument counts and often signals with an audible click. The count relates to the amount of radiation present, which makes the Geiger counter the standard tool for detecting and locating radiation sources.

What is the difference between a Geiger counter and a scintillation detector?

A Geiger counter uses a gas-filled tube and gives a simple, robust count of radiation, ideal for general detection and locating sources. A scintillation detector uses a crystal that emits light when radiation strikes it, offering higher sensitivity and, in some instruments, the ability to identify radiation energy. Geiger counters suit everyday survey work, while scintillation detectors suit low-level detection and identification.

What is the difference between a dose rate meter and a contamination monitor?

A dose rate meter measures how much radiation dose is being received per unit time, which is used to assess exposure risk in an area. A contamination monitor detects radioactive material on surfaces, equipment, or people, which is used to find and control contamination. In short, a dose rate meter measures the radiation field, while a contamination monitor finds radioactive material where it should not be.

What should I consider when buying a radiation detector?

Match the detector to the radiation types you need to measure, alpha, beta, gamma, or a combination, and to the task, dose rate, contamination, or personal dose. Check the sensitivity, energy range, probe options, and alarm features, and confirm the instrument holds a current calibration. For a used detector, verify the detector condition and calibration certificate. Confirm the specification with the seller before you buy.

What is the difference between new and used radiation detectors?

New detectors arrive with a manufacturer warranty, current calibration, and full documentation. Used and refurbished detectors offer significant savings from reputable sellers with documented service history and clear provenance. Because radiation instruments must read accurately, verify the detector and tube condition and, above all, obtain a current calibration certificate or plan to recalibrate against a traceable source before use.

Where can I buy radiation and safety detectors on Machinery Masters?

Browse Machinery Masters for new and used Geiger counters, survey meters, scintillation detectors, contamination monitors, and personal dosimeters from verified sellers worldwide. Use the search and filter tools to narrow by type, brand, and specification, then contact sellers directly to request calibration certificates, service history, and technical specifications before you buy.

Radiation & Safety Detectors (Geiger Counters)

Radiation & Safety Detectors (Geiger Counters)