How you can undertake RoHS testing

What is RoHS?

RoHS is a legal requirement set forth by the EU legislation. The full form of RoHS is Restriction of Hazardous Substances. This standard has been in effect since July 1, 2006. It is mainly used to control the materials and manufacturing processes of electrical and electronic equipment.

It also helps in improving human health and environmental protection. The goal of this standard is to eliminate six things from electrical and electronic products. These are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers. The goal is also to limit lead level to 0.1 percent.

It is a legal obligation made compulsory by European Union legislation. This standard is mainly used for regulation purposes. It regulates electrical and electronic equipment materials and production processes. In addition to this, it helps improve human health and environmental protection.

RoHS testing machine.

The RoHS directive is divided into two parts. These are RoHS1.0 and RoHS2.0. Each of these requires the assessment of different chemicals.

The new regulation is also in compliance with other EU requirements. These include CE marking, certificates of compliance and REACH.

REACH is a general law. It governs chemical substance registration, evaluation, permission, and restriction. RoHS 2 requires a manufacturer to provide necessary technical paperwork as well.

This paperwork documents the manufacturer’s internal production control processes to guarantee that no prohibited compounds are present in the produced devices. This is done before it may be marketed in Europe. This article will explore how Restriction of Hazardous Substances test is conducted.

RoHS Compliance Testing

This testing is usually undertaken for testing electronic appliances, alloy manufacturing, coating and plating, plastics and plastic parts and various hazardous elements.

How is the RoHS test conducted?

The standard ‘Testing Methods for Toxic and Dangerous Substances in Electronic Information Products’ will be referred to as Testing Methods. This standard restricts the testing methods for harmful elements in RoHS regulations.

Among these, X-ray fluorescence spectroscopy has been classified as the quickest and most suitable approach for screening. The relevant standard samples of lead, mercury, cadmium, chromium, and bromine can be accurately tested using X-ray fluorescence spectroscopy or RoHS Analyzer.

Keep in mind that the x-ray fluorescence light analysis values offer information on the presence or absence of banned substances in elemental form when assessing for Restriction of Hazardous Substances compliance. Because the outcome is total Cr and total Br, which does not indicate the form of its presence, Cr and Br require special attention. If Cr and Br are present, hexavalent chromium, PBB, and PBDE must be confirmed using a confirmation test technique.

The RoHS test analytical technique needs to be fine-tuned. Everything that may have an impact on the intensity of fluorescence radiation are taken into account. These include spectral interference and matrix effects.

Bromine and lead may interfere with mercury when the sample contains considerable amounts of calcium and iron. Lead and iron may cause the Bromine to malfunction. In addition to this, the sample thickness has an effect on fluorescence intensity. This is especially seen when measuring cadmium. The reference sample must be comparable to the sample and have the same thickness.

In general, XRF is a method of comparative analysis. The analysis’ outcomes are always the result of the analysis and calibration. As a RoHS tester, it can be used together with a liquid chromatograph.

RoHS Testing Method

Other RoHS test methods include chemical detection, X-ray fluorescence spectrometry, gas chromatography/mass spectrometry amongst others. Among these, X-ray fluorescence spectroscopy has proven to be the most efficient and practical method for screening. X-ray fluorescence spectroscopy can accurately evaluate the five elements of lead, mercury, cadmium, chromium, and bromine. If the sample composition is unequal, it is invalid.

EDX-2 EDXRF RoHS testing 

Performance of the device

RoHS testing equipment has a range of analysis of 1ppm to 100%. Its accuracy is RSD 0.05 percent Au90%. The instrument helps determine the sample’s physical state, be it solid, powder, or liquid. The light tube has voltage of 5KV to 50KV. The light tube flow is 0A 1,000A. High voltage power supply of 0 50KV is also present. A Si-Pin/SDD detector and HD camera is also present. You also get a collimator filter automatic switching system. The device has Si-pin1605eV/SDD1355eV resolution.

It tests out Cl, S, Pb, Hg, Br, Cr, Cd, Ba, Sb, As, and so on. The device’s qualitative and quantitative analysis software supports Win7, Win8, Win10, and Win11. Environmental requirements for the instrument include a temperature range of15°C to 30°C in the environment. A relative humidity range from 35% to 70% and AC 220V5V, 50/60HZ power requirements Additionally, There are no high-power electromagnetic and vibration interference sources in the immediate vicinity.

Advantages

These devices produced by LISUN have all imported core technology. Their original parts are imported from Europe and America. They also have high-resolution and high-definition camera . This camera helps in easy operation. Its camera and cabin illumination system also allows for a real-time view of the sample’s test position.

The over-current and short-circuit protection in the power supply ensures equipment safety. The gold plate and standard material EU calibration certificate are already included in the automatic control test system. This makes it easy for customers to use.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
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