• MA: Direct thermal decomposition mercury analyzer
  • PE: Fully automated petro-pyrolysis mercury analyzer
  • RA: Reducing-vaporization mercury analyzer
  • WA: Atmospheric mercury analyzer
  • EMP: Portable mercury survey meter
  • EMP-3
  • SGM-9

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Portable mercury survey meter


Easy to read and operate by color LCD touch panel, Light-weight hands-free carry and handling, Reliable real-time mercury measurement



Light-weight hands-free carry and handling at site

The EMP-3 is compact, lightweight and highly reliable portable continuous mercury analyzer.

A portable atomic absorption spectrophotometer is installed in the equipment main body, so the equipment is easy to carry to any site, where you can ensure simple and quick measurement of elemental vapor phase mercury in the working environment.

The EMP-3 provides a variety of applications that suggest new mercury measurement methods that can change conventional practice.


Three colors (blue, green and orange) are available.

Evolutionary, highly-sensitive instrument with compact and light body

The sample gas is directly taken into the absorption cell, and mercury concentration is measured by atomic absorption spectroscopy at absorbance of 253.7nm wavelength.

Both weight and size are reduced furthermore compared to our previous model.
The measurement range is as wide as 0 to 2,000µg/Nm3, and the response time is only 1 second. Measurement data is saved in CSV format in the SD card, which can be easily analyzed.

Operation is performed on a touch panel type 4.3 inch color LCD.


Available for various measurement scenes

By installing the GPS function, you do not need to record the measurement point in the field.
In addition, it can be used more reliably with various measurement scenes, such as adopting splashed-proof seamless design or realizing the measurement range twice as wide as the previous models.

The EMP-3 has a function that corrects interference from obstructing substances as the background. Even at sites where the existence of gas that shows positive interference (such as hydrocarbon gas) is suspected, the equipment instantly detects and measures mercury alone and takes up as the data.

By connecting options, it can be used for on-site measurements of samples such as high concentration mercury gas (up to 20,000μg/Nm3) and water. No expensive analytical equipment is needed, and only single unit makes various measurements possible.



SamplesWorkplace, ambient air, petroleum gases, liquid samples (*1)
*1 when used with AQUA kit
Measuring principleNon-dispersive double-beam cold vapor atomic absorption spectrometry
Light sourceLow-pressure mercury discharge lamp
DetectorSemiconductor detector (with a 254 nm band-pass filter)
Detection limit0.1 µg/Nm3 (Normal)
Measuring range 0–2,000 µg/Nm3; 0–20,000 µg/Nm3 (*2)
*2 when used with Hi-Lutor option
Flow rate during measurement~ 1 L/min
PrecisionRSD 3% (2 µg/Nm3 or higher) without any option
Zero correctionAutomatic zero correction
ResolutionSTATIC mode (Stationary mode): 0.1 µg/Nm3 (~ 999.9)
MOBILE mode (Portable mode): 1 µg/Nm3
Display4.3-inch color LCD (480 x 272 pixels, 16.77 million colors)
Onscreen dataInstantaneous value, average value, maximum value, trend graph (on a specified time scale), level gauge (linked with an alarm setting)
Data loggingSaved in CSV files or in the internal onboard 4GB memory
(retained for about 20,000 hours)
Data outputUSB flash drive
Alarm methodAlarm buzzer and screen blinking (The alarm setpoint is configurable.)
Other functionsTemperature compensation, pressure compensation, GPS information recording
Power sourceDedicated nickel hydride battery
(continuous operation: 5.5 hours at 25°C)
Operating conditionsTemperature: 0–45°C, humidity: 10–80%RH (No dew condensation)
Dimensions, weight 207(W) x 115(D) x 140(H) mm, 1.6kg (including the battery)
Standard accessoriesProbe, probe filter (x1), battery (x1), battery charger, shoulder/waist belt, USB flash drive


  • Fluorescent lamps manufacturing, disposal and re-cycling
  • Emergency response to mercury spill & cleanup monitoring
  • Mercury contamination source surveying & investigation
  • Industrial/worker safety and hygiene surveying
  • Facility workplace monitoring
  • Hazardous waste inspection and screening
  • Mercury in natural gas screening and measurement (1)
  • At-site mercury in water analysis (2)

(1): via tedlar® bag
(2): to couple with AQUA kit


AQUA kit (Option for Reducing Vaporization Mercury Analysis)

This kit is a set of reducing-vaporization units for simplified measurement of environmental water and tap water.

Conventionally, the only simplified measuring method usable at site was the one that uses mercury detector tubes. The AQUA kit can measure mercury easily by a method closer to the official analytical method.

AQUA kit

A liquid sample is taken into a sample container, (1+1) sulfuric acid and a 10% tin chloride solution is added to reduce and vaporize mercury in the sample to ensure the simplified measurement of Tin (II) Chloride.

You can also measure total mercury if you perform alkali reduction.

Since the unit is powered by a battery, measurement is possible even at sites in which there is no a power source.
(However, for samples that contain interferences such as organic substances, it may be impossible to obtain correct measurement results without wet pretreatment.)

Hi-Lutor (Option for High Concentration Mercury Measurement)

By installing this option, higher concentration mercury measurement becomes possible.

The measurement range is wide as 0 to 20,000 µg/Nm3, which is suitable for measurement of gaseous metallic mercury in working environment atmosphere, gaseous metallic mercury in liquefied natural gas and liquefied petroleum gas, etc.


WLE-9 (Gaseous mercury pretreatment unit)

When combined with the WLE-9 (Gaseous mercury pretreatment unit), continuous measurement of mercury in stack gas is possible. (SGM-9)

High mobility, thanks to its light weight and compact body, contributes to significant workload reduction during stack gas measurements at high places, which has been conventionally difficult. If its installation space, reagents, and power source are available, you can start measurements within the day.


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