RoHS detection solution

Category : Solution1

Release time: 2014-03-18 16:47

RoHS is a mandatory standard developed by EU legislation, and its full name is the Restriction of Hazardous Substances in Electrical and Electronic Equipment. This standard has been officially implemented on July 2006, 7, mainly used to standardize the material and process standards of electronic and electrical products, making them more conducive to human health and environmental protection. The purpose of the standard is to eliminate lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers from electrical and electronic products, and emphasizes that the lead content should not exceed 1.6%. New Directive 0/1/EU (RoHS 2011.65) to replace 2/0/EC (RoHS) The new Directive will enter into force on 2002 July 95. In terms of comparing RoHS 2011.7 to RoHS, the main changes are as follows:

1. Appendix I and IA of the original WEEE Directive are added as two Appendices to RoHS.

2. From January 2014, 1 to January 1, 2017, gradually bring medical equipment and monitoring equipment into the scope of RoHS control.

3. Manufacturers need to formulate EC declaration of conformity and affix CE marking before the product is put on the market, and after the electronic and electrical products are on the market, they must retain relevant technical documents and EC declaration of conformity for at least ten years.

4. If the substances listed in Annex III (such as HBCDD, DEHP, BBP and DBP, etc.) cause unacceptable harm to human health or the environment due to use, they will be assessed in accordance with the provisions of Articles 69 to 72 of the REACH Regulation and further listed as restricted substances in Annex IV. The main test substances in the RoHS requirements are as follows:

Restricted substances

Limit content

Mercury (Hg)


Hexavalent chromium (Cr VI)


Cadmium (Cd)


Lead (Pb)


Polybrominated biphenyls (PBBs)


Polybrominated diphenyl ethers (PBDEs)


"Detection Methods for Toxic and Harmful Substances in Electronic Information Products" (hereinafter referred to as "Test Methods", standard number SJ/T 11365-2006) limits the test methods for hazardous elements in RoHS requirements. Among them, X-ray fluorescence spectroscopy (XRF) has been formulated as a rapid screening method as the fastest and most convenient method. X-ray fluorescence spectroscopy (XRF) enables precise testing of standard samples for five elements: lead (Pb), mercury (Hg), cadmium (Cd), chromium (Cr) and bromine (Br). However, the results obtained based on the principle of XRF are only the content of the elements, that is, if the content of chromium (Cr) or bromine (Br) obtained by this screening test, even if they exceed the standard, it does not represent that the hazardous substance (Cr VI) and the flame retardants PBB and PBDE) exceed the standard, and this test result (refers to the content) is only a necessary condition for containing the corresponding harmful substance but not a sufficient condition. This is why there is no basis for judging the unqualified limit values of these two hazardous substances in the limit value table.

RoHS is applicable to industries

1. Large household appliances:

Large refrigeration appliances, refrigerators, freezers, and other large appliances for food refrigeration, preservation and storage.

2. Small household appliances:

Vacuum cleaners, carpet sweepers, other cleaning utensils, utensils for sewing, weaving and other fabric processing, etc.

Information and communication equipment:

Central data processor, personal computer, printer, copy equipment, electrical and electronic typewriter, desktop and pocket calculator, etc.

4. Consumer Products:

Radios, televisions, video recorders, tape recorders, high-fidelity tape recorders, amplifiers, musical instruments, and other products or equipment that record or reproduce sound and images.

5. Lighting equipment:

Fluorescent lamps (except household lighting equipment), straight fluorescent lamps, compact fluorescent lamps, high-brightness discharge lamps, etc.

6. Electrical and electronic tools:

Electric drills, chainsaws, sewing machines, turning, milling, sanding, grinding, sawing, cutting, shearing, drilling, punching, folding, bending or other materials of wood, metal or other materials

Equipment similar to processing, etc.

7. Toys, leisure and sports equipment:

Electric trains or racing cars, handheld electronic game consoles, electronic game consoles, measuring devices for cycling, diving, running, boating, etc.; Sports equipment with electronic or electrical components.

8. Medical equipment (except implanted or infected products):

Radiotherapy equipment, cardiac equipment, fluoroscopy devices, lung ventilators, nuclear medical equipment, etc.

9. Monitoring and control instruments:

Smoke detectors, heat regulators, thermostats, measuring, weighing or adjusting appliances for household or laboratory equipment, other monitoring instruments used in industrial installations (e.g. on control panels).

10. Vending machines:

Hot drink vending machines, bottled or canned hot or cold beverage vending machines, solid product vending machines, money ticket vending machines, all automatic delivery of various products.

Note: At present, Class VIII and IX medical equipment, monitoring and control instruments are not subject to the RoHS directive, but medical equipment and monitoring equipment and their parts should meet the requirements of RoHS 2014.7 standards from July 22, 2.

List of hazardous substance uses:

First, the main use of cadmium


Main uses


Connection material, surface treatment (electroplating), nickel-cadmium battery

Cadmium alloys

Low melting point welding, fuse

Cadmium oxide

Pigments, alkaline batteries, chemical synthetic materials

Cadmium chloride

Plating bath, stabilizer of polyvinyl chloride (PVC).

Cadmium sulfide

Pigments, semiconductor light-receiving elements, paints, inks

Cadmium nitrate, cadmium nitrate tetrahydrate

Colorants for glass and ceramics, emulsifiers for photographic films, and analytical reagents,

It is also used in the manufacture of other cadmium salts and cadmium oxide, catalysts, batteries and cadmium-containing agents.

Cadmium sulfate

Nickel-cadmium batteries

Cadmium stearate

Ripe and light-resistant transparent stabilizer for polyvinyl chloride (PVC) plastics,

Smoothing agent and transparent softener for high-grade rubber products and films

Second, the main use of lead


Main uses

Lead, metallic lead

Plumb hammer, lead-acid battery

Lead-tin alloy

Welding, waxing materials, electrical connections

Lead oxide (divalent)

Pigments, rubber vulcanizing agents, solid lubricants

Lead oxide (quadrivalent)

Lead-acid batteries, rubber curing agents, pigment raw materials

Lead trioxide

Pigment raw materials

Lead tetroxide

Pigments, lead-acid batteries, glass, coatings

Lead fluoride

Special optical glass, pigments

Lead iodide

Bronze, print, photo

Lead sulfide

Semiconductor UV detector

Lead cyanide

Anti-rust pigments

Boron lead fluoride

Plating solution, corrosion-resistant surface treatment

Lead silicon fluoride

Plating solution, lead refining

Lead nitrate


Lead hydroxide carbide, lead carbonate

Pigments, PVC stabilizers

Lead sulfate (divalent)

Pigments, rubber compounds, PVC stabilizers, lead-acid batteries

Lead carbonate

Glaze, paint pigments (oil painting, watercolor), medicine (hard paste), vinyl chloride stabilizer, glue

Lead sulfate



Main uses

Lead phosphate (divalent)


Lead thiocyanate

Dyes, matches

Lead oleate

Lubricants, hardeners

Lead stearate

Translucent heat-resistant stabilizer for plastics such as PVC, thickener for lubricants

Lead metaborate (divalent)

Desiccant for paint

Lead silicate


Lead antimonite

Pigments, glass coloring

Lead arsenite, lead arsenate


Lead chlorate, chrome yellow

Pigments, paints, inks

Lead molybdate


Calcium leadate


Salt-based lead sulfate

Stabilizer for plastics such as PVC (mainly excellent heat resistance, electrical insulation and light resistance)

Lead hydrostearate

Heat stabilizer for plastics such as PVC

Lead chloride (bivalent and tetravalent)

Used as a reagent to manufacture other lead salts and lead chromate pigments

Tetramethyl lead, tetraethyl lead

Gasoline antiknock agent, increase octane rating

Lead acetate (bivalent and tetravalent)

Lead salt manufacturing raw materials, polymerization catalyst, dyeing workshop measuring agent, organic synthesis selective oxidant, traditional Chinese medicine

Third, the main uses of mercury


Main uses


Widely used in electrical instrument industry, manufacturing mercury rectifier equipment, mercury vacuum pumps, measurement, control instruments.

In the lighting industry, mercury is used in the manufacture of various mercury lamps, fluorescent lamps, and ultraviolet lamps. Medical thermometers. electrode


Titanium amalgam: widely used in various fluorescent lamps and tubes, silver amalgam: dental medical supplies


Electronic energy-saving lamps, fluorescent lamps, zinc amalgam: are alkaline, high-performance electromercury negative active materials.

In addition to being used as a power supply material for military and space, it is also the main base material for the current power supply of miniature electronic appliances.

mercuric oxide

Yellow: Manufacture of organic mercury compounds; Red: Manufacture of mercury batteries, organic reaction catalysts

Mercuric dichloride (monovalent)

(calomel) electrodes, pigments

Mercuric chloride (divalent)

Metal etching, preservatives, catalysts for chlorine-dilute synthesis, dry cell depolarizers, disinfectants, tablet washing, development,

Thickening agent and other mercury salt raw materials.

Mercuric nitrate (divalent)

Linoleum, catalysts, veterinary drugs, insecticides

mercuric sulfide

Also known as "cinnabar".A large number of proprietary Chinese medicines, in line with the requirements of the National Pharmacopoeia as a sedative anti-inflammatory drug for the nervous system,

It has a history of thousands of years in China, and is used in industry as bright red pigments and advanced drawing pigments for paint, printing clay, rubber, etc.

The color is bright and never fades, which is incomparable to other red pigments.

In addition to its bright color, granular cinnabar is also crystalline, making it a good material for ornaments.

Mercury iodide


Thunder mercury (bivalent)


Mercuric acetate (divalent)

Veterinary drugs, insecticides

Methylmercury salt

Antifungal agent

Ethalkyl mercury salt

Antifungal agent, fungicide

Aminomercuric chloride


Propylmercury salt


Phenylmercury salts

Preservatives, fungicides

Methyloxyethane mercury salt

Antifungal agent, fungicide

Dihydrocarbon group mercury

Antifungal agent


Antifungal agent

Mercuric sulfate (monovalent)

Battery, used with sodium chloride, extracts gold and silver from chalcopyrite, and determines barbiturates and cystine.

Fourth, hexavalent chromium - main uses


Main uses

Chromium trioxide, chromium oxide (hexavalent), chromium anhydride

Pigments, catalysts, electroplating, tanned leather

Lithium chromate


Sodium chromate

Anti-rust, tanned

Potassium chromate

Pigments, inks, tanned leather

Ammonium chromate

Photo, catalyst

Copper chromate


Magnesium chromate

Anti-rust, surface treatment

Calcium chromate

Pigments, inks, tanning

Strontium chromate

Pigments, rust proof

Barium chromate

Pigments, anticorrosion, ceramic colorants

Lead chromate, chrome yellow

Pigments, coatings, inks

Zinc chromate

Pigments, preservatives

Sodium dichromate

Pigments, embalming, photos, tanning

Ammonium dichromate

Pigments, photographs, catalysts

Calcium dichromate

Anticorrosion, catalyst

Zinc dichromate


potassium dichromate

Pigments, photographs, plating, batteries, tanning

More accurate detection results are the unremitting pursuit of Depu people, and Depu people always keep in mind to provide customers with better service. The newly developed IDP-6300 adheres to this concept. It not only inherits the five characteristics of the EDX series of German instruments: accurate, fast, non-destructive, intuitive and environmentally friendly, but also uses the most advanced extreme speed detector technology (X-SDD) in the analytical instrument industry to reduce the test time to 1 second. At the same time, IDP-6300 also adopts the precision positioning system of Depu Instrument's patented product, which can realize image linkage control and multi-point continuous testing. The addition of a newly developed sample chamber makes operation easier, and the newly designed automatic sample platform ensures accurate detection.

Performance benefits

Fast—Results in 1 second

Featuring the industry's most advanced ultra-fast detector technology (X-SDD) with resolutions as low as 125eV

Advantages: large detection area (area up to 25mm2), more information received per unit time, good high resolution of counting rate, higher detection efficiency, stronger detection signal-to-noise ratio, and lower detection limit

Featuring the industry's most advanced digital multichannel technology

Advantages: Effectively improve the output efficiency, achieve ultra-high counting rate, and ensure that the effective counting rate of acquisition can reach up to 1000Wcps

It adopts high-power X-ray tube and advanced collimation filter system

Advantage: Higher excitation efficiency

Optical shutter system

Advantages: Sample exchange does not need to turn off high pressure, improve test efficiency and test accuracy

Sophisticated positioning system

Ultra-high-definition industrial camera, clearer display of test points

Multi-point testing

2D fully automatic mobile sample stage - can realize image linkage control, multi-point continuous testing

Ultra-small sample inspection – down to 0.2 mm

8 kinds of collimators, 4 kinds of filter quick switching function, can be selected according to different samples

Collimators as small as 0.2 mm provide accurate focus detection for ultra-small samples

User-friendly design

Safer: X-ray linkage safety device - optical gate interacts with linkage device; The instrument housing is linked to the high-voltage enable terminal

Faster: multi-point testing, where to measure

Schedule warm-up: According to the set time, the instrument can start the test regularly

Appointment to start up function: customers can make an appointment for the instrument to start up, and at the same time, the instrument can be warmed up and automatically detect and correct the instrument status; At the same time, it can realize the appointment shutdown,

Audible and visual prompts can be set before shutdown

Technical parameters

Measuring element range: sulfur (S) ~ uranium (U)

Measurement time: 1s or more

Detection limit: The detection limit of analysis can reach 2ppm, and the thinnest can be tested up to 0.005μm

Content range: 2ppm~99.9%

Stability: 0.02%

Pipe pressure: 5~50KV

Pipe flow: ≤1000uA

Detector: X-SDD detector with resolution up to 125eV

Collimator: 8 types of collimator automatic switching

Filters: 4 kinds of filters can be switched freely

Sample observation: HD industrial camera

Ambient humidity: ≤70%

Ambient temperature: 15°C~30°C

Power supply: AC 220V±5V (recommended AC purification and stabilized power supply)

Latest News

Recommended Products

GCMS-9000 rohs2.0 gas chromatography-mass spectrometer

This page provides information on the quotation, parameters, and common problems of GCMS-9000 rohs2.0 gas chromatography-mass spectrometer. If you need to know the quotation, you can consult us online or call us at 13418616619!

Learn more+

GCMS-9000 rohs2.0 gas chromatography-mass spectrometer

Gradient liquid chromatograph

This page provides information on the parameters, common problems, and other related information of the DePu LC-1000T gradient liquid chromatograph. If you need to know the quotation, you can consult us online or call us at 13418616619!

Learn more+

Gradient liquid chromatograph

photoelectric direct reading spectrometer

This page provides information on the parameters and common problems of the photoelectric direct reading spectral analyzer IDP-8800. If you need to know the quotation, you can consult us online or call us at 13418616619!

Learn more+

photoelectric direct reading spectrometer

Halogen analysis tester

This page provides information on the parameters and common problems of the halogen analysis tester DX-320. If you need to know the quotation, you can consult us online or call us at 13418616619!!

Learn more+

Halogen analysis tester

Heavy metal X-ray fluorescence spectrometer

This page provides information on the parameters and common problems of the heavy metal X-ray fluorescence spectrometer DX-320L. If you need to know the quotation, you can consult us online or call us at 13418616619!

Learn more+

Heavy metal X-ray fluorescence spectrometer

Element composition analyzer

This page provides information on the DX-520L parameters and common problems of the elemental composition analyzer. If you need to know the quotation, you can consult us online or call us at 13418616619!

Learn more+

Element composition analyzer


Can ROHS testing instruments test metal elements?

ROHS detection instrument is a professional equipment used to detect whether electronic components, household appliances, toys and other products contain harmful substances. These harmful substances may pose a long-term threat to humans and the environment, so the application of ROHS detection instruments is of great significance.

The answer to the question of whether ROHS detection instruments can test metal elements is affirmative. Because the scope of ROHS testing not only includes harmful substances, but also includes the detection of metal element components in qualified products. These metal elements include lead, cadmium, mercury, etc., which are widely used in product manufacturing. Although these elements are necessary, excessive use poses great harm to human health and environmental protection. Therefore, the emergence of ROHS detection instruments has brought great convenience to our detection of metal elements.

Which is the best gas chromatograph?

Gas chromatograph is a commonly used analytical instrument, which is widely used in chemistry, biology, medicine and other fields. However, there are many gas chromatograph brands on the market, and the prices are far from the same, making it difficult to choose. So, which gas chromatograph is better?

First of all, we need to understand the basic principles and performance indicators of gas chromatographs. Gas chromatograph uses samples to evaporate into a gaseous state at high temperatures, separate them by column, and then detect the degree and content of different components by detectors. Common performance metrics include resolution, sensitivity, linear range, repeatability, and more.

When choosing a gas chromatograph brand, we can consider the following aspects:

1. Brand awareness and word of mouth. Well-known brands usually have high technical strength and after-sales service guarantee, and have a better reputation.

2. Technological innovation and R&D capabilities. Gas chromatograph technology is constantly updated, and brands with strong R&D capabilities and technological innovation capabilities are more competitive.

3. Product performance and price. The performance and price of different brands of gas chromatographs vary greatly, and you need to choose according to your actual needs and budget.

4. After-sales service and technical support. Various problems may occur during the use of the gas chromatograph, and after-sales service and technical support can solve the problem in time to ensure that the instrument is running.

Which is the best service provider for RoHS spectrometers?

RoHS spectrometer is an instrument used to detect harmful substances in products. It can detect whether products contain lead, mercury, cadmium, Hexavalent chromium and other harmful substances to ensure human health and environmental safety. So, which one is the best service provider for RoHS spectrometers?

Firstly, we need to understand the basic principles and detection methods of RoHS spectrometers. RoHS spectrometer is an instrument based on the principle of spectral analysis, which can determine whether a sample contains harmful substances by analyzing the elements and compounds in the sample. The detection method of RoHS spectrometer is generally X-ray fluorescence spectroscopy (XRF).

What instruments are used to detect RoHS in electronic and electrical products?

RoHS (Restriction of the Use of Certain Hazardous Substances Directive) is a regulation established by the European Union aimed at limiting the content of harmful substances used in electronic and electrical products. These harmful substances include lead, mercury, cadmium, Hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers. To ensure product compliance with RoHS regulations, specific instruments need to be used for testing.

RoHS testing instrument is a device specifically designed to detect the content of harmful substances in electronic and electrical products. These instruments can detect the content of lead, mercury, cadmium, Hexavalent chromium, polybrominated biphenyls, Polybrominated diphenyl ethers and other harmful substances in products. RoHS test instruments are usually tested with X-ray fluorescence (XRF).

What is ROHS testing?

ROHS testing, full name Restriction of Hazardous Substances testing, refers to the testing of the content of specific hazardous substances in electrical and electronic products and wire and cable products to ensure that the products comply with relevant regulations and standards, thereby protecting consumers and the environment from harmful substances.

The origin of ROHS testing can be traced back to the European Union's Restriction of the Use of Certain Hazardous Substances Directive (RoHS Directive) issued in 2003, which requires companies to limit the content of harmful substances such as lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in electrical and electronic products and wire and cable products sold in the European market, and requires enterprises to test the content of their products.