ICP Test Report Certification Packet

Transcription

1 ICP Test Report Certification Packet Company Name: Littelfuse, Inc. Product Type: Surface Mount Varistors Product Series: VxxxxMHS/ MLE/MLAxxxxNR Series Issue Date: October 2, 2012 It is hereby certified by Littelfuse, Inc. that there is neither RoHS (EU Directive2002/95/EC, 2011/65/EU)-restricted substance nor such use, for materials to be used for unit parts, for packing/packaging materials, and for additives and the like in the manufacturing processes. In addition, it is hereby reported to you that the parts and sub-materials, the materials to be used for unit parts, the packing/packaging materials, and the additives and the like in the manufacturing processes, are all composed of the following components. Issued by: (1) Parts, sub-materials and unit parts < DGLF Environmental, Health & Safety Engineer > This document covers the Surface Mount Varistors MHS/MLE/MLAxxxxNR compliant series products manufactured by Littelfuse, Inc. Please see Table 1 for raw materials used. (2) The ICP data on all measurable substances Please see appropriate pages as identified in Table 1 Remarks: Pb (lead) contained in glass of electronic components and is categorized as exempt under 7c-1 of the RoHS Annex. Form Rev. A 1 2/21/06 1

2 Table 1: List of Raw Materials covered by this report Parts P/N Raw Material Description Page 1 N/A Zinc Oxide N/A Glass Sintered Flux N/A 4 N/A Internal Electrode Conductive Paste (RoHS Test) Internal Electrode Conductive Paste (Halogen Test) N/A Overcoat Solder resist N/A Additive A N/A End Termination Ag Paste N/A External Electrode - Nickel N/A External Electrode - Tin Form Rev. A 1 2/21/06 2

3 Analyzed for Undisclosed Recipient upon upon request request of: of: Littelfuse Inc. Littelfuse Inc West Higgins Road, Suite 500, 8755 West Higgins Road, Suite 500, Chicago IL USA IL Chicago USA

4 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

5 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

6 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

7 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

8 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

9 Analyzed for Undisclosed Recipient upon request of: Littelfuse Inc West Higgins Road, Suite 500, Chicago IL USA

10 Analyzed for Undisclosed Recipient for: Littelfuse Inc West Higgins Road, Suite 500 Chicago, IL USA

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43 Test Report Number: SZHH Applicant: LITTELFUSE, INC Date: Sep 05, WEST HIGGINS ROAD SUITE 500CHICAGO IL USA Attn: KRISTEEN BACILA/ARSENIO CESISTA JR. Sample Description: One (1) submitted sample said to be silver-grey paste (silver paste). Part No. : 5450T. ************************************************************************************************************************************** Tests conducted: As requested by the applicant, refer to attached page(s) for details. ************************************************************************************************************************************** To be continued Authorized by: For Intertek Testing Services Shenzhen Ltd. Ben N.L. Lin General Manager Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 1 of 9

44 Test Report Number: SZHH Conclusion: Tested Samples Standard Result Submitted sample Restriction of the use of certain hazardous substance in electrical and electronic equipment (RoHS Directive 2002/95/EC and superseding 2011/65/EU) See test conducted Phthalates content requirement in Annex XVII Items 51 & 52 of the REACH Regulation (EC) No. 1907/2006 & Amendment No. 552/2009 (formerly known as Directive 2005/84/EC) (DEHP, DBP & BBP) Test Item Hexabromocyclododecane Content Pass See test conducted Halogen (F, Cl, Br, I) Content See test conducted ********************************************************************************************************************************* Authorized by: For Intertek Testing Services Shenzhen Ltd. Ben N.L. Lin General Manager Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 2 of 9

45 Test Report Number: SZHH Tests Conducted 1 RoHS Chemical Test (A) Test Result Summary: Testing Item Cadmium (Cd) Content (mg/kg) Lead (Pb) Content (mg/kg) Mercury (Hg) Content (mg/kg) Chromium (VI)(Cr 6+ ) Content (mg/kg) Polybrominated Biphenyls (PBBs)(mg/kg) Monobromobiphenyl (MonoBB) Dibromobiphenyl (DiBB) Tribromobiphenyl (TriBB) Tetrabromobiphenyl (TetraBB) Pentabromobiphenyl (PentaBB) Hexabromobiphenyl (HexaBB) Heptabromobiphenyl (HeptaBB) Octabromobiphenyl (OctaBB) Nonabromobiphenyl (NonaBB) Decabromobiphenyl (DecaBB) Polybrominated Diphenyl Ethers (PBDEs)(mg/kg) Monobromodiphenyl Ether (MonoBDE) Dibromodiphenyl Ether (DiBDE) Tribromodiphenyl Ether (TriBDE) Tetrabromodiphenyl Ether (TetraBDE) Pentabromodiphenyl Ether (PentaBDE) Hexabromodiphenyl Ether (HexaBDE) Heptabromodiphenyl Ether (HeptaBDE) Octabromodiphenyl Ether (OctaBDE) Nonabromodiphenyl Ether (NonaBDE) Decabromodiphenyl Ether (DecaBDE) Result ND(<2) ND(<2) ND(<2) ND(<1) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) ND(<5) Chemist: Wang Haijun/Zeng Guoliang mg/kg = milligram per kilogram based on dry weight of sample = ppm < = Less than ND = Not detected ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 3 of 9

46 Test Report Number: SZHH Tests Conducted (B) RoHS Requirement: Restricted Substances Cadmium (Cd) Lead (Pb) Mercury (Hg) Chromium (VI) (Cr 6+ ) Polybrominated Biphenyls (PBBs) Polybrominated Diphenyl Ethers (PBDEs) Limits 0.01% (100 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) The above limits were quoted from 2002/95/EC and superseding 2011/65/EU for homogeneous material. (C) Test Method: Testing Item Testing Method Reporting Limit Cadmium (Cd) Content Lead (Pb) Content Mercury (Hg) Content Chromium (VI)(Cr 6+ ) Content Polybrominated Biphenyls (PBBs)& Polybrominated Diphenyl Ethers (PBDEs) With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by alkaline digestion and determined by UV-VIS Spectrophotometer With reference to IEC Edition 1.0:2008, by solvent extraction and determined by GC/MS and further HPLC confirmation when necessary 2 mg/kg 2 mg/kg 2 mg/kg 1 mg/kg 5 mg/kg Date sample received : Aug 30, 2012 Testing period : Aug 30, 2012 to Sep 01, 2012 ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 4 of 9

47 Test Report Number: SZHH Tests Conducted (D) Measurement Flowchart: 1. Test for Cd/Pb Contents Put weighed sample into a suitable vessel Add suitable acid Digest sample in vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask 2. Test for Hg Content Put weighed sample into a microwave digestion vessel Concentrated nitric acid, fluoroboric acid and hydrogen peroxide were added Digest sample in microwave digestion vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 5 of 9

48 Test Report Number: SZHH Tests Conducted 3. Test for Chromium (VI) (Cr 6+ ) Content (Alkaline Digestion) Weigh sample in an Erlenmeyer flask Add digestion solution and continue stirring while heating at 90~95 Adjust the ph of the solution to 7.5±0.5 and transfer the solution to a volumetric flask Add diphenylcarbazide solution and make up with deionized water Adjust the ph of the solution to 2.0±0.5 Make up with deionized water Analyze the mixture by using UV-VIS Spectrophotometer with wavelength set at 540 nm 4. Test for PBBs/PBDEs Contents Weigh sample and place in a thimble Extracted by Soxhlet extraction with organic solvent Concentrate the extract Analyze by GC/MS and further HPLC confirmation when necessary Make up with organic solvent Transfer the extract into a volumetric flask ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 6 of 9

49 Test Report Number: SZHH Tests Conducted 2 Phthalate Content With reference to EN14372, by Gas chromatographic-mass Spectrometric (GC-MS) analysis. Result (%) Dibutyl phthalate (DBP) <0.01 Di-(2-ethyl hexyl) phthalate (DEHP) <0.01 Benzyl butyl phthalate (BBP) <0.01 Sum of three phthalates <0.01 Limit 0.1 % The above limit was quoted according to Annex XVII Items 51 & 52 of the REACH Regulation (EC) No. 1907/2006 & Amendment No. 552/2009(formerly known as Directive 2005/84/EC) for phthalate content in toys and children articles. < = Less than % = Percentage based on dry weight of sample Remark : As per client s request, only DBP, DEHP and BBP were tested for the submitted sample. Date sample received : Aug 30, 2012 Testing period : Aug 30, 2012 to Sep 04, Hexabromocyclododecane (HBCDD) Content: By solvent extraction followed by Gas Chromatographic - Mass Spectrometric (GC-MS) analysis. Result : Less than 10 mg/kg mg/kg = milligram per kilogram based on dry weight of sample Date sample received : Aug 30, 2012 Testing period : Aug 30, 2012 to Aug 31, 2012 ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 7 of 9

50 Test Report Number: SZHH Tests Conducted 4 Halogen Content (Ⅰ) Test Result Summary: Testing Item Fluorine (F) Content Chlorine (Cl) Content Bromine (Br) Content Iodine (I) Content Result (mg/kg) ND ND ND ND mg/kg = milligram per kilogram based on dry weight of sample = ppm ND = Not detected (Ⅱ) Test Method: Testing Item Testing Method Reporting Limit Halogen (F, Cl, Br, I) Content With reference to BS EN 14582:2007, by calorimetric bomb and determined by Ion Chromatography 50 mg/kg Reporting limit = Quantitation limit of analyte in sample Date sample received : Aug 30, 2012 Testing period : Aug 30, 2012 to Sep 01, 2012 ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 8 of 9

51 Test Report Number: SZHH Tests Conducted (Ⅲ) Measurement Flowchart: Test for Halogen Content (Reference Method: BS EN 14582:2007) Sampling/grinding or cutting Add absorbent in a calorimetric bomb weighed sample in the calorimetric bomb & place Fill the calorimetric bomb with oxygen Ignite with nickel wire, and then leave the calorimetric bomb at room temperature No Yes Any test specimen in the calorimetric bomb? Transfer the absorbent into a volumetric flask Make up with deionized water Analyzed by Ion Chromatography ************************************************************************************************************************************* End of report This report is made solely on the basis of your instructions and/or information and materials supplied by you. It is not intended to be a recommendation for any particular course of action. Intertek does not accept a duty of care or any other responsibility to any person other than the Client in respect of this report and only accepts liability to the Client insofar as is expressly contained in the terms and conditions governing Intertek's provision of services to you. Intertek makes no warranties or representations either express or implied with respect to this report save as provided for in those terms and conditions. We have aimed to conduct the Review on a diligent and careful basis and we do not accept any liability to you for any loss arising out of or in connection with this report, in contract, tort, by statute or otherwise, except in the event of our gross negligence or wilful misconduct. Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 9 of 9

52 Test Report Number: SZHH Applicant: LITTELFUSE, INC Date: May 14, WEST HIGGINS ROAD SUITE 500CHICAGO IL USA Attn: KRISTEEN BACILA/ARSENIO CESISTA JR. Sample Description: One (1) submitted sample said to be silver-grey plated metal (nickel plated). ************************************************************************************************************************************** Tests conducted: As requested by the applicant, refer to attached page(s) for details. ************************************************************************************************************************************** Conclusion: Tested Samples Standard Result Submitted sample Restriction of the use of certain hazardous substance in electrical electronic and equipment (RoHS Direction 2002/95/EC and supersedure 2011/65/EU) Pass ********************************************************************************************************************************* Authorized by: For Intertek Testing Services Shenzhen Ltd. Ben N.L. Lin General Manager Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 1 of 4

53 Test Report Number: SZHH Tests Conducted RoHS Chemical Test (A) Test Result Summary: Testing Item Cadmium (Cd) Content (mg/kg) Lead (Pb) Content (mg/kg) Mercury (Hg) Content (mg/kg) Chromium (VI)(Cr 6+ ) Result (By Boiling Water Extraction on Metal)(mg/kg with 50cm 2 ) Result ND(<2) ND(<2) ND(<2) Negative(<0.02) Chemist: Wang Haijun mg/kg = milligram per kilogram = ppm mg/kg with 50cm 2 = milligram per kilogram with 50 square centimetre < = Less than ND = Not detected Positive = A positive test result indicated the presence of Cr(VI) at the time of testing, equal to or greater than threshold of 1 mg/kg for spot test procedure or 0.02 mg/kg for boiling-water-extraction procedures with a sample surface area of 50cm 2 used. However, it shall not be interpreted as the Cr(VI) concentration in the coating layer of the sample and should not be used as a method detection limit for this qualitative test. Negative = A negative test result indicated above positive observation was not found at the time of testing. When the spot-test showed a negative result, the boiling-water-extraction procedure shall be used to verify the result. (B) RoHS Requirement: Restricted Substances Cadmium (Cd) Lead (Pb) Mercury (Hg) Chromium (VI) (Cr 6+ ) Limits 0.01% (100 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) The above limits were quoted from 2002/95/EC and supersedure 2011/65/EU for homogeneous material. ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 2 of 4

54 Test Report Number: SZHH Tests Conducted (C) Test Method: Testing Item Testing Method Reporting Limit Cadmium (Cd) Content Lead (Pb) Content Mercury (Hg) Content Chromium (VI) (Cr 6+ ) Content Date sample received: May 08, 2012 Testing period: May 08, 2012 to May 11, 2012 With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by boiling water extraction and determined by UV-VIS Spectrophotometer 2 mg/kg 2 mg/kg 2 mg/kg Positive/Negative (Threshold of 0.02mg/kg with 50cm 2 ) (D) Measurement Flowchart: 1. Test for Cd/Pb Contents Put weighed sample into a suitable vessel Add suitable acid Digest sample in vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 3 of 4

55 Test Report Number: SZHH Tests Conducted 2. Test for Hg Content Put weighed sample into a microwave digestion vessel Concentrated nitric acid, fluoroboric acid and hydrogen peroxide were added Digest sample in microwave digestion vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask 3. Test for Chromium (VI) (Cr 6+ ) Content (Boiling Water Extraction) Measure area of sample Put the sample into a suitable vessel with boiling deionized water, totally immerse the sample and heat 10 mins Cool the beaker and its content to room temperature Analyze the mixture by using UV-VIS Spectrophotometer with wavelength set at 540 nm Add orthophosphoric acid solution and diphenylcarbazide solution Make up with deionized water ************************************************************************************************************************************* End of report Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 4 of 4

56 Test Report Number: SZHH Applicant: LITTELFUSE, INC Date: May 11, WEST HIGGINS ROAD SUITE 500CHICAGO IL USA Attn: KRISTEEN BACILA/ARSENIO CESISTA JR. Sample Description: One (1) submitted sample said to be solder (tin plated). ************************************************************************************************************************************** Tests conducted: As requested by the applicant, refer to attached page(s) for details. ************************************************************************************************************************************** Conclusion: Tested Samples Standard Result Submitted sample Restriction of the use of certain hazardous substance in electrical electronic and equipment (RoHS Direction 2002/95/EC and supersedure 2011/65/EU) Pass ********************************************************************************************************************************* Authorized by: For Intertek Testing Services Shenzhen Ltd. Ben N.L. Lin General Manager Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 1 of 4

57 Test Report Number: SZHH Tests Conducted RoHS Chemical Test (A) Test Result Summary: Testing Item Result Cadmium (Cd) Content (mg/kg) ND(<2) Lead (Pb) Content (mg/kg) 276 Mercury (Hg) Content (mg/kg) ND(<2) Chromium (VI)(Cr 6+ ) Result (By Boiling Water Extraction on Metal)(mg/kg with 50cm 2 ) Negative(<0.02) Chemist: Wang Haijun mg/kg = milligram per kilogram = ppm mg/kg with 50cm 2 = milligram per kilogram with 50 square centimetre < = Less than ND = Not detected Positive = A positive test result indicated the presence of Cr(VI) at the time of testing, equal to or greater than threshold of 1 mg/kg for spot test procedure or 0.02 mg/kg for boiling-water-extraction procedures with a sample surface area of 50cm 2 used. However, it shall not be interpreted as the Cr(VI) concentration in the coating layer of the sample and should not be used as a method detection limit for this qualitative test. Negative = A negative test result indicated above positive observation was not found at the time of testing. When the spot-test showed a negative result, the boiling-water-extraction procedure shall be used to verify the result. (B) RoHS Requirement: Restricted Substances Cadmium (Cd) Lead (Pb) Mercury (Hg) Chromium (VI) (Cr 6+ ) Limits 0.01% (100 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) 0.1% (1000 mg/kg) The above limits were quoted from 2002/95/EC and supersedure 2011/65/EU for homogeneous material. ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 2 of 4

58 Test Report Number: SZHH Tests Conducted (C) Test Method: Testing Item Testing Method Reporting Limit Cadmium (Cd) Content Lead (Pb) Content Mercury (Hg) Content Chromium (VI) (Cr 6+ ) Content Date sample received: May 08, 2012 Testing period: May 08, 2012 to May 10, 2012 With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by acid digestion and determined by ICP - OES With reference to IEC Edition 1.0:2008, by boiling water extraction and determined by UV-VIS Spectrophotometer 2 mg/kg 2 mg/kg 2 mg/kg Positive/Negative (Threshold of 0.02mg/kg with 50cm 2 ) (D) Measurement Flowchart: 1. Test for Cd/Pb Contents Put weighed sample into a suitable vessel Add suitable acid Digest sample in vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask ************************************************************************************************************************************* Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 3 of 4

59 Test Report Number: SZHH Tests Conducted 2. Test for Hg Content Put weighed sample into a microwave digestion vessel Concentrated nitric acid, fluoroboric acid and hydrogen peroxide were added Digest sample in microwave digestion vessel Totally dissolved Analyzed by ICP- OES Made up with deionized water Transfer the digested solution into a volumetric flask 3. Test for Chromium (VI) (Cr 6+ ) Content (Boiling Water Extraction) Measure area of sample Put the sample into a suitable vessel with boiling deionized water, totally immerse the sample and heat 10 mins Cool the beaker and its content to room temperature Analyze the mixture by using UV-VIS Spectrophotometer with wavelength set at 540 nm Add orthophosphoric acid solution and diphenylcarbazide solution Make up with deionized water ************************************************************************************************************************************* End of report Intertek Testing Services Shenzhen Ltd.-TFH Division 7/F., ShekouTechnology Main Building, Industrial 7th Road,Shekou,Shenzhen, China Tel: (86-755) Fax: (86-755) /9 Postcode: Attention is drawn to the terms and conditions printed overleaf. Page 4 of 4