Analysis of Hazardous Substances of
Electrical and Electronic Equipment Pursuant
to WEEE & RoHS Requlations



The RoHS Directive was put into force on July 1, 2006.
We will perform analysis with high precision, making use of a broad range of knowledge of materials and pretreatment technology that is based on our screening and chemical processing technique, which is one of our strengths.
We will promptly meet your requests at our laboratories located across Japan (in 8 locations).

Hazardous materials subject to the regulations

●Cadmium (Cd) ●Mercury (Hg) ●Lead (Pb) ●Hexavalent chromium Cr6+)
●Brominated flame retardants (PBB, PBDE)


Various resins (including fluorocarbon resin), plating solution, plated thin film, solvents, electronic parts/materials, etc.

Analytical method

(1) Screening by XRF
Equipment meeting RoHS requirements has been introduced!

  • Since filters (for Pb, Cd and Cr) for improving detection sensitivity are made available, the background has stepped back, with the result that sensitivity has improved significantly.
  • Since measurement is made at φ2.5mm by use of the collimator, even relatively small samples can be measured.

(2) Precision analysis

①Hazardous metals
・Pretreatment: Wet decomposition, dry ashing, pressurized acidolysis method, combustion decomposition, extraction (Cr6+)
・Measuring method: ICP-AES, ICP-MS, atomic absorption, absorptiometry

②Brominated flame retardants
Evaluation as total Br: Ion chromatography total
Evaluation as PBB, PBDE – 1: Extraction unnecessary → IA-MS (lower limit: 50ppm) * Semi-precision analysis
Evaluation as PBB, PBDE – 2: Extraction processing → GC-MS (lower limit: 1ppm)

Search Number 3007

Download The Technical Note of This Exapmle.

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