SEFA 8 Testing on EBA 4

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1 SEFA 8 Testing on EBA 4 1. Introduction SEFA is a voluntary international trade association representing member of the laboratory fume furniture, casework, fume hood, and related equipment industry 1. The association was founded to promote this rapidly expanding industry to improve the quality, safety and timely completion of laboratory facilities in accordance to customer requirements. This report provides the testing result when performing the SEFA 8 test procedure on EBA 4 where it is installed as the base cabinet for fume hood named with model EFA 4. When performing the SEFA 8 test code, the apparatus that used in this test is not similar as stated in the code but closely adopted without sacrificing the root of the test purpose. When perform the test, the hollow section filled with concrete to replace the steel bars without reducing the requirement weight (as SEFA 8 stated) while other apparatus chosen as similar with. 2. Purpose.. The main goals from this test are: Conclude if the EBA 4 complies to SEFA 8. Collect important data and proposed the improvement for future or immediate development. 1 SEFA 8 (Scientific Equipment and Furniture Association), year Revision : 01 Doc Number : 00/SEFA 8/EBA 4/2008

2 3. Apparatus. a. Steel Bar replaced with hollow section fillet with cement b. Chemical ( see section 8.0 of SEFA 8 :PL:2007) c. Impact test equipment ( see appendix at section 16 in this report) d. Razor blade ( see appendix at section 17 in this report) e. Pencils with specification : 8 H,7 H, 6 H, 5 H, 4 H, 3 H, 2 H, H, F, HB, B (soft), 2 B, 3 B, 4 B, 5 B ( see appendix at section 18 in this report) f. Emery paper g. and other auxiliary equipment ( detail can be found SEFA 8:PL:2007) 4. Result Summary Manufacturer information Manufacturer infromation Name : ESCO Micro Pte, ltd. Address : 21 Changi South Street 1 Test Address : Telephone : Fax : Date : May 2008 Test Supervisor/Engineer information Name : Chandra Manik Title : 4.2 Test Result Table 1 SEFA 8 Test Result No Type of Test Test Result PASS/FAIL Remarks 1 Cabinet load test PASS No permanent damage 2 Cabinet concentrated load test PASS No permanent damage 3 Cabinet torsion PASS Pass without damage 4 Cabinet submersion test PASS Planning to make tub 5 Door hinge test PASS Both hinge pass the test 6 Door impact test PASS No damage to doors 7 Door cycle test PASS At least 100,000 cycle 8 Drawer static test Not performed EBA 4 has no drawer spec. 9 Drawer and door pull test Not performed EBA 4 has no drawer spec. 10 Drawer impact test Not performed EBA 4 has no drawer spec. 11 Drawer internal rolling impact Not performed EBA 4 has no drawer spec. Revision : 01 Doc Number : 00/SEFA 8/EBA 4/2008

3 12 Drawer cycle test Not performed EBA 4 has no drawer spec. 13 Shelf load test Not performed EBA 4 has no drawer spec. 14 Chemical spot test PASS No spot to coating 15 Hot water test PASS No coating damage 16 Impact test PASS No permanent damage 17 Paint adhesion on steel PASS 100% coat intack 18 Paint hardness on steel PASS PASS with Hardnes 4 H 5. Feed Back.. Based on testing result, the feed back for development are collected as below. The base cabinet frame should be strengthened (see figure 1) to make it stronger than before though when tested the deflection is not permanent. Adding hollow section is the most feasible way to achieved stronger structure. Based on impact test on coating surface, found that for the coating thickness around 90 μm, the test result is fail. Based on literature, the thickness of coating inversely proportional to the coating impact strength. After seek factory standard, was found that coating thickness about 80 μm is the suitable value. The coating thickness measured using thickness sensor (see figure 2.) Strengthen this frame Figure 1. horizontal frame of the base cabinet that should be strengthen Revision : 01 Doc Number : 00/SEFA 8/EBA 4/2008

on its surface, the result is pass and detail can be found in appendix A. 6. References.

4 Thickness sensor Figure 2. Measuring the coating thickness Using thickness sensor to find the desire value about 80 μm and performed the impact test on its surface, the result is pass and detail can be found in appendix A. 6. References. [1] Recommended practices for plastic laminate laboratory grade furniture, case work, shelving and tables, SEFA 8 PL [2] Powder coating standard operational procedure, ESCO powder coating department Revision : 01 Doc Number : 00/SEFA 8/EBA 4/2008

5 APPENDIX This below procedures retyped from SEFA 8 year Cabinet load test 1.1 Purpose of test The cabinet load test will challenge the structural integrity and load bearing capability of the cabinet construction. This test will demonstrate the ability of the cabinet to support heavy applied loads. This is not intended to test the functional characteristics of the cabinet under heavy loads. 1.2 Test Procedure Verify that the cabinet is level. Load the cabinet top by using 2000 pounds (907.2 Kg) of solid steel bars (in this test, replaced with hollow section 100x50 filled with concrete) stacked five high and spaced per Figure A.1. After ten minutes, unload the cabinet. Figure A.1 Cabinet load configuration 1.3 Acceptance level The cabinet will have no signs of permanent failure. After the load is removed inspect the levelers. Any deformation shall not interfere with the function of the leveling system.

1.4 Test Result After ten minutes, the result are : no damage on leveler and no permanent damage on the base cabinet ( see figure A.

1 Purpose of test The purpose of this test is to challenge the functional characteristics of the cabinet when subjected to a concentrated

1), apply a tota lof 200 pounds (90.72 Kg) to the top of the cabinet along the cabinet centerline (SeeFigure #3).

6 1.4 Test Result After ten minutes, the result are : no damage on leveler and no permanent damage on the base cabinet ( see figure A.2) On testing After testing Figure A.2 Cabinet load test result 2 Cabinet concentrated load test 2.1 Purpose of test The purpose of this test is to challenge the functional characteristics of the cabinet when subjected to a concentrated load on the center of the cabinet top. 2.2 Test Procedure Using solid weights or 10 pound (4.54 Kg) sand bags (per Section #3.1), apply a tota lof 200 pounds (90.72 Kg) to the top of the cabinet along the cabinet centerline (SeeFigure #3). Operate doors and drawers. 2.3 Acceptance level Door and drawer operation shall be normal under condition of test load. There shall be no signs of permanent distortion to front rail, cabinet joinery, doors, or drawers

2.4 Test Result After test (as shown in figure A.3), no damage was found on cabinet joinery, doors, drawers and permanent distortion. On testing After testing Figure A.

1 Purpose of test This test will evaluate the structural integrity of the cabinet construction when subjected to torsional load. 3.

the area of support under the cabinet shall be located not more than 6" (152.4mm) in from each supported corner.

76 Kg) of weight), on the top of the cabinet to prevent overturning. Apply four solid steel bars (200 pounds [90.

7 2.4 Test Result After test (as shown in figure A.3), no damage was found on cabinet joinery, doors, drawers and permanent distortion. On testing After testing Figure A.3 Cabinet concentrated load test result 3 Cabinet torsion 3.1 Purpose of test This test will evaluate the structural integrity of the cabinet construction when subjected to torsional load. 3.2 Test Procedure The cabinet shall be tested in its normal upright position, raised not less than four inches off the floor and supported on rear and one front corner.the area of support under the cabinet shall be located not more than 6" (152.4mm) in from each supported corner. Secure the cabinet diagonally from the unsupported corner with seven solid steel bars per Section #3.1 (350 pounds ( Kg) of weight), on the top of the cabinet to prevent overturning. Apply four solid steel bars (200 pounds [90.72 Kg] of weight) to the unsupported corner for a period of fifteen minutes (See Figure #4). Remove weight and place cabinet on the floor in its normal upright position. Observe cabinet joinery. Level the cabinet and measure the face and back of the cabinet across the diagonal corners. 3.3 Acceptance level When returned to normal position, the operation of the cabinet shall be normal, and there will be no signs of permanent damage. The difference between the two measurements taken from measuring the diagonal corners shall be no more than 1/8" (3.175mm).

8 3.4 Test Result No permanent damage and also the difference between two diagonal corners no more than 10 mm. On testing After testing Figure A.4 Cabinet torsion result 4 Cabinet submersion test 4.1 Purpose of test This test will demonstrate the ability of a cabinet to resist standing water. Only units that rest on the floor or a unit where the base is within 2". 4.2 Test Procedure The material thickness along the perimeter of the cabinet shall be measured on 6 (152.4mm) increments. Record the thickness of the material to be submerged in water. Calculate the arithmetic mean of the data taken. Place the entire test cabinet in its upright position such that the cabinet is submerged in a pan filled with 2" (50.8mm) of water. After four hours, remove the unit from the water immediately measure the thickness of the material at the same points measured initially. Calculate the new arithmetic mean. After the unit has been allowed to dry, inspect for other damage. 4.3 Acceptance level The cabinet will show no signs of permanent deformation or deterioration. Increase in thickness shall not exceed four percent of the initial mean measurements. 4.4 Test Result According to the test result is pass for submersion test.

9 5 Door hinge test 5.1 Purpose of test This test will demonstrate the durability of the door and its hardware (hinge leaf, screws, etc.) to an applied load of 200 pounds (90.72 Kg). 5.2 Test Procedure Remove the shelf for this test. With unit and top set as described in Section 4.1 of SEFA 8, add sufficient weight to the top in order to prevent overturning. With cabinet door opened 90 degrees, hang a sling made up of two 100 pound (45.36 Kg) weights (shot bags or solid weights) over top of the door at a point 12" (304.8mm) out from the hinge centerline (See Figures #A5 a and #A5 b). Slowly move door through the full cycle of the hinge, up to a 160 degree arc. Remove weight and swing door through its full intended range of motion and close door. Figure A5 b. Base cabinet door load

10 Figure A5 b. Base cabinet door load top view 51.3 Acceptance level The open door shall withstand a load of 200 pounds (90.72 Kg) when applied at a point 12" (304.8mm) from the hinge centerline without significant permanent distortion. Operation of the door, after test, shall show no significant permanent distortion that will cause binding of the door or hinges or that will adversely affect operation of the catch *. * Certain unit configurations require hinge location to be such that load ratings are lower than the test model. See manufacturer for details. 5.4 Test Result Testing result : no significant permanent distortion that damage the hinge and the door.

On testing After testing Figure A6. Door hinge test result 6 Door impact test 6.

This test should not be inclusive of glass doors 6.

1 in SEFA 8, add sufficient weight to the top in order to prevent overturning. A 20 pound (9.

11 On testing After testing Figure A6. Door hinge test result 6 Door impact test 6.1 Purpose of test This test will demonstrate the resistance of a 240 inch pound (27.1 N m) impact to the door face. Only units that extend below the work surface should be subjected to this test. This test should not be inclusive of glass doors 6.2 Test Procedure With unit and top set as described in Section # 4.1 in SEFA 8, add sufficient weight to the top in order to prevent overturning. A 20 pound (9.07 Kg) sand bag (per Section #3.1 in SEFA 8) shall be suspended and dropped to provide an impact of 240 inch pounds (27.1 N m) at the center of the closed door. (See Figure A7.) 6.3 Acceptance level After the test, the door and catch shall operate normally and show no signs of permanent damage

12 6.4 Test Result Figure A.7 Base cabinet door impact. No permanent result to hinge, door. It still work properly, very little bumped cause impact Little bumped Caused impact load On testing After testing Figure A.7 Base cabinet door impact result.

7 Door cycle test 1.1 Purpose of test This test will demonstrate the durability of the door hinge hardware to withstand 100,000 cycles as a reliable measure for longevity). 1.2 Test Procedure This test shall be in conformance to the ANSI test procedure A156.

The door shall operate freely without binding. 1.4 Test Result When tested under 100,000 cycles, the result shown that no permanent damage and malfunction to the door.

13 7 Door cycle test 1.1 Purpose of test This test will demonstrate the durability of the door hinge hardware to withstand 100,000 cycles as a reliable measure for longevity). 1.2 Test Procedure This test shall be in conformance to the ANSI test procedure A156.9, Grade 1, requirements for cycle testing of doors. A cycling mechanism shall swing door 90 degrees. Door shall operate for 100,000 cycles with a speed not greater than 15 cycles per minute. 1.3 Acceptance level Door shall operate for the full cycle period without deterioration that wil significantly affect the function of the door. The door shall operate freely without binding. 1.4 Test Result When tested under 100,000 cycles, the result shown that no permanent damage and malfunction to the door. On testing After testing Figure A.8 Door cycles test.

14 8 Drawer static test This test is not performed since the EBA 4 has no drawer type. 9 Drawer and door pull test This test is not performed since the EBA 4 has no drawer type. 10 Drawer impact test This test is not performed since the EBA 4 has no drawer type. 11 Drawer internal rolling impact This test is not performed since the EBA 4 has no drawer type. 12 Drawer cycle test This test is not performed since the EBA 4 has no drawer type. 13 Shelf load test This test is not performed since the EBA 4 is not shelf type. 14 Chemical spot test.14.1 Purpose of test The purpose of the chemical spot test is to evaluate the resistance a finish has to chemical spills 14.2 Test Procedure Obtain one sample panel measuring 14" x 24" (355.6mm x 609.6mm). The received sample to be tested for chemical resistance as described herein. Place panel on a flat surface, clean with soap and water and blot dry. Condition the panel for 48 hours at 73+ 3F (23(+ 2(C) and 50+ 5% relative humidity. Test the panel for chemical resistance using forty nine different chemical reagents by one of the following methods. Method A Test volatile chemicals by placing a cotton ball saturated with reagent in the mouth of a 1 oz. (29.574cc) bottle and inverting the bottle on the surface of the panel. Method B Test non volatile chemicals by placing five drops of the reagent on the surface of the panel and covering with a 24mm watch glass, convex side down. For both of the above methods, leave the reagents on the panel for a period of one hour. Wash off the panel with water, clean with detergent and naptha, and rinse with deionized water. Dry with a towel and evaluate after 24 hours at 73± 3 F (23 ±2 C) and 50± 5% relative humidity using the following rating system. Level 0 No detectable change. Level 1 Slight change in color or gloss. Level 2 Slight surface etching or severe staining. Level 3 Pitting, cratering, swelling, or erosion of coating. Obvious and significant deterioration.

15 See SEEFA 8 for detail list for substances in chemical spot test Acceptance level Results will vary from manufacturer to manufacturer. Laboratory grade finishes should result in no more than four Level 3 conditions. Suitability for a given application is dependent upon the chemicals used in a given laboratory. When performed the spot chemical test, available chemical resources and quality criteria are: M.E.K ( methyl, Ethyl, Ketone) No coat glossy tearing or damage on coating glossy) Ethanol No change in colour NaoH No change in color Hidcrolic Acid No change in color Formaldehyd No change in color Iodosphor No change in color Phosporic Acid No change in color Phenol No change in color or no yellow spot found ( this according to Dupont standard) Zinc phosperic No change in color 14.4 Test Result Based on the above chemical test, the result is PASS without found any changes in color, shown in figure A.9. Table 1. Type of chemical and method for testing Test No. Chemical Reagent Method 1. Acetate, Amyl A 2. Acetate, Ethyl A 3 Acetic Acid, 98% B 4. Acetone A 5. Acid Dichromate, 5% B 6. Alcohol, Butyl A 7. Alcohol, Ethyl A 8. Alcohol, Methyl A 9. Ammonium Hydroxide, 28% B 10. Benzene A 11. Carbon Tetrachloride A 12. Chloroform A 13. Chromic Acid, 60% B 14. Cresol A 15. Dichlor Acetic Acid A 16. Dimethylformanide A 17. Dioxane A

[88 C to 96 C]) shall be allowed to trickle (with a steady stream and at a rate of not less than 6 ounces [177.

16 On testing After testing 15 Hot water test 15.1 Purpose of test Figure A.9. Chemical Spot Test The purpose of this test is to insure the coating has adequate resistant to hot water Test Procedure Hot water (190 F. to 205 F. [88 C to 96 C]) shall be allowed to trickle (with a steady stream and at a rate of not less than 6 ounces [177.44cc] per minute) on the finished surface, which shall be set at an angle of 45 degrees, for a period of five minutes Acceptance level After cooling and wiping dry, the finish shall show no visible effect from the hot water Test Result Based on testing result (see figure A.10), the coating surface did not show any physicals damage and color change.

17 45 o On testing After testing Figure A.10 Hot water test on coating surface. 16 Impact test 16.1 Purpose of test The purpose of this test is to evaluate the ductility of the coating Test Procedure A one pound ball (approximately 2" [50.8mm] in diameter) shall be dropped from a distance of 12" (304.8mm) onto a flat horizontal surface, coated to manufacturer s standard method Acceptance level There shall be no visual evidence to the naked eye of cracks or checks in the finish due to impact.

which does not meet the factory acceptance

ESCO had standardized the coating thickness

18 Ball diameter 50.8 mm for impact. test Complete Impact test equipment Figure A.11 Impact test equipment 16.4 Test Result According to the test result, first specimen is fail. The failure comes from the coating thickness which does not meet the factory acceptance level about μm. ESCO had standardized the coating thickness from 60 to 80 μm.,see figure A.12 for testing result. For the second specimen, the result is PASS. No Visual Crack (a) Figure A.12 (a) first test (b) Using second specimen with coating thickness average 80 μm (b)

This does not apply to non steel products. 17.

Two sets of eleven parallel lines 1/16" (1.

The cuts shall be made just deep enough to go through the coating, but not into the substrate.

19 17 Paint adhesion on steel 17.1 Purpose of test The paint adhesion test is used to determine the bond of the coating to steel. This does not apply to non steel products Test Procedure This test is based on ASTM D Standard Method of Test for Adhesion of Organic Coating. Two sets of eleven parallel lines 1/16" (1.587mm) apart shall be cut with a razor blade to intersect at right angles thus forming a grid of 100 squares. The cuts shall be made just deep enough to go through the coating, but not into the substrate. They shall then be brushed lightly with a soft brush for one minute. Examine under 100 foot candle of illumination Acceptance level Ninety or more of the squares shall show finish intact Test Result EBA 4 is pass this test, when performing the test square grids created above specimen and brushed, the result is 100% grid intact, see figure A % grid intact (a) (b) Figure A.13 (a) Making grid above the coating (b) After brushing the grids

20 18 Paint hardness on steel 18.1 Purpose of test The paint hardness test is used to determine the resistance of the coatings to scratches Test Procedure Pencils, regardless of their brand, are valued in this way: 8 H is the hardest, and nex t11order of diminishing hardness are 7 H, 6 H, 5 H, 4 H, 3 H, 2 H, H, F, HB, B (soft), 2 B, 3 B, 4 B, 5 B (which are softest). The pencils shall be sharpened on emery paper to a wide sharp edge. (See Figure A.13) Pencils of increasing hardness shall be pushed across the paint film in a chisel like manner until one is found that will cut or scratch the film. The pencil used before that one, that is the hardest pencil that will not rupture the film, is then used to express or designate the hardness Acceptance level The paint shall have a hardness of 4 H minimum. Figure A.14 Cabinet body surface hardness test Test Result After performing the test, the result is pass at minimum 4 H (see figure A.15).

21 Scratch when performed 4 H pencil Figure A.15 Paint hardness on steel using pencils

Scientific Equipment & Furniture Association Recommended Practices. SEFA 8PH-2014 Laboratory Grade Phenolic Casework

Scientific Equipment & Furniture Association Recommended Practices SEFA 8PH-2014 Laboratory Grade Phenolic Casework SEFA World Headquarters 65 Hilton Avenue Garden City, NY 11530 Tel: 516-294-5424 Fax: