RoHS/WEEE Element Lead

Lead (Pb)

Lead (Pb) can be easily absorbed by living organisms (including humans) and can cause multiple health and environmental problems. As such, the 2002/95/EC Directive limits the maximum level of Pb at 1000 ppm.

Options for Testing and Measuring
XRF analyzers can be used as a quick, non destructive test method to ensure Pb free components.

• The NITON XLt field portable XRF can be used anywhere in your facility to quickly screen Pb levels
• The ARL QUANT'X is a robust laboratory XRF analyzer appropriate for any high throughput laboratory.
• The Thermo Scientific Micro XR is a sophisticated small spot XRF instrument which can be used to pinpoint sample measurement.

For low level measurement, more sensitive techniques are required, specifically AAS or ICP-OES. Either method yields precise results at the required RoHS limit levels; both require some sample preparation by digesting the sample prior to analysis to ensure homogeneity.

• Either the M or S series AAS instruments can be used to detect levels down to low ppm or ppb levels.
• The iCAP 6000 series ICP can be used for multiple element measurement, including Pb, with accuracy down to 1ppb.

Where is it used
Lead (Pb) can be present in electronic equipment for a number of reasons, including lead/tin solder (as well as other fusible alloys), PCB coatings, ceramics, etc; as well as exist as an impurity in lead free solder, coatings, etc.