Jerome J405-Gold Film Mercury Vapor Analyzer

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£11,080.00 - £14,238.00




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The Jerome® J405 portable mercury vapor monitor is redefining the portable mercury vapor analyzer market. Significant performance enhancements and modern communications capabilities have been combined to create a new option for mercury spill detection and clean-up analysis. The J405 utilizes the industry-proven, inherently stable, and reliable gold film sensor technology, and simple, one-button operation. The ergonomically-designed handle, lighter exterior case, and significantly lower detection capabilities (0.5 µg/m3) make it a portable, easy to use, low-level mercury detection instrument.

  • Sensitive: With a detection limit of 0.5 µg/m3, the J405 is ideal for both industrial and residential cleanup settings.
  • Proven: Jerome® instruments have been recognized as the gold standard for mercury detection for over 35 years.
  • Rugged: Its sturdy metal housing makes the J405 tough enough for nearly any environment.
  • Reliable: With 24 hours of battery life per charge, the J405 is always ready when you need it.
  • Smart: Features onboard data logging for up to 20,000 measurements, USB data transfer, and SCADA interface capabilities through 4-20ma output.

Features and Benefits

  • Ultra Low-Level Detection: The Jerome J405 can detect mercury vapor in air at levels as low as 0.5 µg/m3 with a resolution of 0.01 µg/m3.
  • Gold Film Sensor: Validated in the field and in the lab for over 35 years, our proprietary gold film sensor ensures repeatable results across a wide range of applications.
  • Versatile: The J405 is in active use by many environmental agencies, industrial hygienists, miners, and first response teams across the world.
  • Regulatory Compliance: With a lower detection limit of 0.5 µg/m3, the J405 meets and exceeds EPA and ATSDR standards for industrial and residential remediation actions as well as OSHA, NIOSH, ACGIH, and MSHA action levels.
  • Optional Data Logging: When equipped with data logging capabilities, the J405 can store data for up to 20,000 samples including date, time, and up to 80 locations.
  • Survey Mode: While in survey mode, the J405 continuously draws in samples of air to help users locate the source of mercury contamination and enable corrective action to be taken.
  • Field Regeneration: The J405 boasts a battery life of 24 hours and offers battery-powered sensor regeneration that can be performed wherever and whenever you need it, allowing for extended testing in the field.
  • Durable: Housed in a light, ergonomically designed, durable metal casing, the J405 sets a new precedent for portable, low-level mercury monitors.
  • Intuitive Interface: The J405 offers simple, menu-driven operation as well as easy-to-understand diagnostics and error detection. It does not require PC software and comes with a USB interface for easy data transfer.


Detection Range:

0.5 µg/m3 – 999 µg/m3


0.01 µg/m3 (0.00001 mg/m3)


 ±10% at 1.0 µg/m3
±5% at 25 µg/m3
±5% at 100 µg/m3

Response Time:

Sample Mode: 16 seconds
Survey Mode: 2 seconds

Flow Rate:

750 ± 50 mL/min

Result Units:

µg/m3, mg/m3

Auto sample Intervals:

1, 2, 5, 10, 15, 30, 45, 60, 90 or 120 minutes

Optional Integrated Data Storage:  

20,000 test results; retain date, time and up to 80 locations


3.5″ (9 cm) backlit LCD


Rechargeable NiMH
24-hour life, charges in 3 hours

Power Requirements:

12 VDC for the instrument;
100-240 VAC, 47-63 Hz, 1.3 A for the AC power supply


Auto-resetting fuse

Operating Environment:

0°C to 45°C, non-condensing, non-explosive


Digital: USB serial data to PC, printer or USB flash drive
Analog: 4-20 mA passive current loop; accurate to 0.3% of output


11″ L x 6″ W x 6.5″ H
(28 cm L x 16 cm W x 17 cm H)


5.3 lbs. (2.4 kg)


1 year, factory parts and labor


TUV 61010, CE


Jerome J405 Brochure