Steps for reporting halogen testing of electronic components
Date：2026-01-30 09:36:50 Classification
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The process of obtaining a halogen test report for electronic components, considering both the characteristics of the components and industry standards, can be divided into the following steps:
I. Initial Needs Confirmation and Institution Selection
1. Clarify Testing Standards and Compliance Requirements
First, determine the target standards to be met. Mainstream references for electronic components include the RoHS Directive, IEC 61249-2-21, and IPC-4101. Common limits are chlorine (Cl) ≤ 900 ppm, bromine (Br) ≤ 900 ppm, and Cl+Br ≤ 1500 ppm. Simultaneously, inform the testing institution of the component type and target market (standards may vary slightly in different regions). The institution's customer service can assist in clarifying the requirements to avoid deviations in testing focus.
2. Select a Fully Qualified Testing Institution
Prioritize third-party testing institutions with authoritative qualifications such as CNAS (e.g., Dezewei Testing, CNAS registration number: L8083). These institutions can provide professional methods for electronic components, such as rapid screening using X-ray fluorescence spectroscopy (XRF) and quantitative analysis using oxygen bomb combustion-ion chromatography, ensuring independent, impartial results that comply with regulatory requirements.
II. Sample Submission and Procedures
3. Representative Sample Preparation
Sampling should be taken from different batches and different locations: solid components must be crushed and mixed evenly; multi-component components should be separated and sampled independently to avoid distorted results due to sampling only surface materials; ensure no cross-contamination of samples to guarantee that the test data reflects the true condition of the product.
4. Document Submission and Sample Sending
Fill out the institution's testing application form, providing information such as component model, material, and functional description; send the samples to the laboratory, and pay the testing fee after confirming the testing plan.
III. Laboratory Testing Implementation
5. Sample Pretreatment
The mainstream method for electronic components is the oxygen bomb combustion method: Weigh 0.1000-0.5000g of sample into a platinum cup, add the absorption liquid, and burn it in a high-pressure oxygen bomb (2-4MPa). After cooling for 30 minutes, dilute the absorption liquid to volume and filter to convert halogens into detectable hydrogen halide forms; complex matrices can be treated with microwave digestion.
6. Instrumental Analysis and Quality Control
Accurate quantitative analysis using ion chromatography (IC) is performed to separate and detect halide ion content. Alternatively, XRF can be used for rapid, non-destructive screening to preliminarily determine the halogen content range.
Blank and parallel samples must be prepared simultaneously for each batch of samples, controlling the chlorine/bromine recovery rate to 80%-120%, and strictly controlling data accuracy.
IV. Report Issuance and Delivery
7. Testing Cycle
The testing cycle for routine electronic component samples is 5-7 working days. For simple samples, this can be shortened to 3-5 working days. The cycle for complex samples will be extended depending on the actual situation.
8. Formal Report Issuance
The core content of the report includes:
Basic sample information, testing standards, testing methods and instrument model used;
Specific halogen (Cl, Br, etc.) content values, and comparison with limits (clarifying whether compliance with standard requirements is met);
Key information such as uncertainty is indicated. Some institutions will provide result interpretation and compliance suggestions.
9. Report Delivery
After testing is completed, the organization will send the official report and invoice to the submitting party, supporting delivery in paper or electronic format.
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