Document NzyJD6898OwB2Mv1Mn6ZdYQR

----- This is the English translation of PTFE_PFA analysis JP.pdf ---- For Sumitomo Electric Fine Polymer, Inc April 4, 2019 Order number: 8678598 Sumika Chamical Analysis Service Chiba Laboratory Kitasode 9-1, Sodegaura-shi Chiba 299-0266 Japan Analysis and Test Report PFOA measurement from PTFE and PFA Please feel free to ask our sales representative or personnel below if you have any inquiry on the test results. Supervisor: Uchihara Person in charge: Yamauchi Phone: +81-(0)438-62-4193 Fax: +81-(0)438-62-4162 April 4, 2019 Order number: 8678598 PFOA Measurement in PTFE and PFA 1. Objective Measurement of PFOA (perfluoro-n-octanoic acid) quantity in test samples respectively. 2. Type and number of the test samples 1) Cross-linked PTFE (atmospheric baking) 2) Cross-linked PTFE (nitrogen baking) 3) PTFE 4) Cross-linked PFA (nitrogen baking) Total 4 different test samples 3. Analysis and Test target Perfluoro-n-octanoic acid (PFOA), CAS NO. 335-67-1 Total 1 test target 4. Analysis and Test method 4.1 Sample preparation Step 1) Added solvent to each test sample Step 2) Performed ultrasonic extraction. Step 3) Sampled a certain amount once the volume of the extract was measured. Step 4) Added standard solution for calibration. Step 5) Used it as liquidus sample for the testing. 4.2 Measuring method Measured the liquidus samples acquired from 4.1 using liquid chromatograph-tandem mass spectrometer (LC-MS/MS). 5 Analysis and Test Results Table 1 shows the analysis and test results. Table 1. Analysis and Test Results Test sample 1) Cross-linked PTFE (atmospheric baking) 2) Cross-linked PTFE (nitrogen baking) 3) PTFE 4) Cross-linked PFA (nitrogen baking) Lower limit of quantitation unit: g/kg (=ppb) PFOA <10 <10 <10 <10 10