• 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
  • EMP Gold+

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Field-Portable High-Sensitivity
Mercury Analyzer

EMP Gold+

In combination with EMP-3 and Gold+, makes you on-site measurement as High-Sensitivity Mercury Analyzer.



On-site measurement realized by its integrating the detector and mercury trap into the case

The EMP Gold+ is a portable mercury analyzer using the gold amalgam concentration atomic absorption spectrometry.

By attaching the Gold+ unit to the EMP-3, it is possible to make the sensitivity 1,000 times as high and measure air in the general environment.

EMP Gold+

Principle of measurement (measurement of air in general environment)

Sampling is carried out with the heater kept at 150°C to suppress the influence of interference gas. The mercury in the gas in the sample is collected and concentrated as gold amalgam in the mercury collector tube. After the collection, the mercury collector tube is heated to separate mercury gas, a measurement is made using the atomic absorption spectrometry, and the result is converted into the quantity of mercury.

The sampled gas quantity is measured as an air quantity in standard conditions (0°C and 1 atm.) using the flow sensor, and a mercury concentration is automatically calculated.

EMP Gold+

Various options enable measurement of mercury in natural gas, liquefied petroleum gas, and low-concentration solutions

When you connect a Gold+ unit gas meter (optional), natural gas or liquefied petroleum gas can be available for measurement.

Also, by connecting the AQUA kit (reduced vaporized mercury measurement option), it is possible to measure extremely low concentrations of mercury in a solution.

EMP Gold+


Measurement principleNon-dispersive double-beam cold vapor atomic absorption spectrometry
Measurement Range0.005ng ~ 8ng
Limit of Detection0.002ng
PrecisionCV ≤ 3% at 0.5 ng
Flow Rate 0.3 ~ 0.5L/min
Sampling Time1 to 30min.
Sample VolumeGas: Up to 15 L, Solution: 20 mL
Dimensions450W x 370D x 190H (mm) (Including case)
Weight6.4kg (Including case)
BatteryDedicated NiMH battery
Number of Continual Measurements50 (Approximately 5 hours)
(Using fully charged battery)


  • Air in general environment
  • Ground surface gas
  • Natural gas / Liquefied petroleum gas
  • Low-concentration solutions


N-PackerUsed to measure mercury from ground surface in geothermal measurement etc.
BackpackUsed to shoulder carrying case
MB-1Used to collect standard mercury gas
Tedlar BagUsed to measure NG/LPG
Gold+ Unit Gas MeterUsed to measure NG/LPG
AC AdapterFor 100 - 240 VAC
(This is different from the AC adapter for the EMP-3. To carry out the AC driving of both the EMP-3 and the Gold+ unit, prepare each AC adapter.)

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