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TECHNICAL NOTE5ASTM B117 Salt Spray Fog TestPowder Coated AluminumA Technical Supplement from NLS EngineeringSUMMARY AND CONCLUSION:Test samples of all color offerings show no visible deterioration per ASTM D1654 and ASTM D714 after 3,000 hoursof exposure to ASTM B117 test method with only slight discoloration of test coupon #5, silver metallic.Eight powder coated aluminum coupons were tested per ASTM B117 Salt Spray Fog Test. Each test sample was coatedwith standard NLS color offerings; white, dark gray, light gray, dark green, metallic, bronze, black, and green. All 8 testcoupons were exposed for 3000 hours. Coupons were inspected at 1000, 2000, and 3000 hours with specific inspectioncriteria of creepage at scribe, blister frequency, and blister size. Slight discoloration was noticed on test coupon #5,silver metallic; no creepage or blisters were present. Results of testing are for powder coated aluminum typically usedin the construction of NLS fixtures.1 IntroductionThe ASTM B117 is a standard test carried out to determine the corrosive effect of salt on metallic objects. It isdone by spraying salt on a specimen housed in a closed chamber. This is an accelerated form for atmosphericcorrosion testing. In this test, the corrosive atmosphere is introduced, allowing the test to be completed in lesstime than these corrosive processes would naturally occur. This is because conditions in this test are normallyharsher than the ones present in the natural environment, see Table 1. ASTBM B117 is also known as salt spraytesting or fog testing.Test ParametersValue(s)Salt Solution5 parts (by weight) of sodium chloride to 95 parts waterpH Range6.5 to 7.2Test Temperature35 2 C (95 3 F)Test CycleContinuous spray (fog)Exposure Duration3000 hoursTable 1) ASTM B117 Test ParametersNLS LightingTechnical Note 5October 24, 2018P a g e 1

TECHNICAL NOTEA Technical Supplement from NLS Engineering2 Interpretation of ResultsThe painted test samples were evaluated per ASTM D1654 Evaluation of Painted or Coated Specimens Subjectedto Corrosive Environments and ASTM D714 Evaluating Degree of Blistering of Paints.2.1 ASTM D1654An X pattern is scribed into the powder coated test coupons, see Figure 1. The scribed test coupons are thenexposed to ASTM B117 testing. After the exposure the rate the corrosion or loss of paint extending from a scribemark as prescribed in Table 2.Figure 1) Scribed Test CouponsTable 2) Creepage RatingNLS LightingTechnical Note 5October 24, 2018P a g e 2

TECHNICAL NOTEA Technical Supplement from NLS Engineering2.2 ASTM D714This test method employs photographic reference standards to evaluate the degree of blistering that maydevelop when paint systems are subjected to conditions which will cause blistering, see Figure 2.Figure 2) Photographic Reference for BlisteringNLS LightingTechnical Note 5October 24, 2018P a g e 3

TECHNICAL NOTEA Technical Supplement from NLS Engineering3 ConclusionTest samples of all color offerings show no visible deterioration of the finish per ASTM D1654 and ASTM D714 after3,000 hours of exposure, see Table 3, with only slight discoloration of test coupon #5, silver metallic, see Figure3.See Appendix A for complete test report.Hours ofExposureASTM D1654ASTM D714Creepage at Scribe(Millimeters)Blister Size(Area Failed %)Blister Frequency10000.0No failureNone20000.0No failureNone30000.0No failureNoneTable 3) Test Results1000 Hours2000 Hours3000 HoursFigure 3) Test Coupon #5, Silver Metallic – Slight DiscolorationNLS LightingTechnical Note 5October 24, 2018P a g e 4

TECHNICAL NOTEA Technical Supplement from NLS EngineeringAPPENDIX ANLS LightingTechnical Note 5October 24, 2018P a g e 5

Salt Spray Test Report(Per ASTM B117)#1 Panel: White#2 Panel: Light Gray#3 Panel: Dark Gray#4 Panel: Dark Green#5 Panel: Metallic#6 Panel: BronzeCustomer: NLS LightingProduct code: Not KnownProduct color: VariousProject#: 2018R&D083Date In: 06-19-2018Date Out:HoursCreepage at scribeASTMD1654RatingBlister frequencyASTMD714RatingBlister SizeASTMD714RatingPanelsPanelsPanels#1 #2 #3 #4 #5 #6 #1 #2 #3#4 #5 #6 #1 #2 #3 #4 #5#6100010 10 10 10 10 10 10 10 1010 10 10 10 10 10 10 1010200010 10 10 10 10 10 10 10 1010 10 10 10 10 10 10 1010300010 10 10 10 10 10 10 10 1010 10 10 10 10 10 10 1010CommentsProcess: The Panels are coated at the customer facility through their normal processPre-treatment: Not knownSubstrate: AluminumEquipment Parameters:5% Salt solution in distilled water, ph7.1Chamber temperature of 95f /- 2fAverage collection rate of fog 1-2 ml/hourASTM Notations (as per ASTM D1654-92):Creepage From ScribeCreepage From ScribeMillimetersRating NumberMillimetersRating Number010Over 5.0-7.04Over 0 to 0.59Over 7.0-10.03Over 0.5 to 1.08Over 10.0-13.02Over 1.0-2.07Over 13.0-16.01Over 2.0-3.06Over 16.0 to more0Over 3.0-5.05Rating of Unscribed AreasArea Failed% Rating NumberNo Failure100 to 192 to 384 to 677 to 10611 to 205Rating of Unscribed AreasArea Failed%Rating Number21 to 30431 to 40341 to 55256 to 751Over 750This report should serve as a general guide and IFS COATINGS assumes no obligation or liability for use of this information. This report is for the exclusive use of the customer to whom it isaddressed. This test report shall not be reproduced, except in full, without written approval from the laboratory. Any recommendations contained herein or any information given by any IFSCOATINGS representative is based on tests and information believed to be accurate. Since coating performance characteristics are greatly influenced by conditions of substrate, surfacepreparation, application procedures, curing procedures and other local factors beyond IFS Powder Coatings’ control, IFS Powder Coatings assumes no liability for coating failure other than tosupply replacement material for a coating material proved to be defective. Users must make their own determination of product suitability for a particular purpose under the user’s own operatingconditions prior to use of any product No representative of ours has any authority to waive or change this provision. Do not use any product until the current Material Safety Data Sheet has beenread and is fully understood.3601 North Interstate 35Gainesville, Texas 76240Tel. (940) 668 1062; Fax. (940) 668 1061www.ifscos.com Email: info@ifscos.com

Salt Spray Test Report(Per ASTM B117)Customer: NLS LightingProduct code: Not KnownProduct color: VariousProject#: 2018R&D083Date In: 06-19-2018Date Out:Hours#7 Panel: Black#8 Panel: GreenCreepage at scribeASTMD1654RatingBlister frequencyASTMD714RatingBlister SizeASTMD714RatingPanelsPanelsPanelsComments#7 #8 #9 #10 #11 #12 #7 #8 #9 #10 #11 #12 #7 #8 #9 #10 #11 #12100010 10----10 10----10 10----200010 10----10 10----10 10----300010 10----10 10----10 10----Process: The Panels are coated at the customer facility through their normal processPre-treatment: Not knownSubstrate: AluminumEquipment Parameters:5% Salt solution in distilled water, ph7.1Chamber temperature of 95f /- 2fAverage collection rate of fog 1-2 ml/hourASTM Notations (as per ASTM D1654-92):Creepage From ScribeCreepage From ScribeMillimetersRating NumberMillimetersRating Number010Over 5.0-7.04Over 0 to 0.59Over 7.0-10.03Over 0.5 to 1.08Over 10.0-13.02Over 1.0-2.07Over 13.0-16.01Over 2.0-3.06Over 16.0 to more0Over 3.0-5.05Rating of Unscribed AreasArea Failed% Rating NumberNo Failure100 to 192 to 384 to 677 to 10611 to 205Rating of Unscribed AreasArea Failed%Rating Number21 to 30431 to 40341 to 55256 to 751Over 750This report should serve as a general guide and IFS COATINGS assumes no obligation or liability for use of this information. This report is for the exclusive use of the customer to whom it isaddressed. This test report shall not be reproduced, except in full, without written approval from the laboratory. Any recommendations contained herein or any information given by any IFSCOATINGS representative is based on tests and information believed to be accurate. Since coating performance characteristics are greatly influenced by conditions of substrate, surfacepreparation, application procedures, curing procedures and other local factors beyond IFS Powder Coatings’ control, IFS Powder Coatings assumes no liability for coating failure other than tosupply replacement material for a coating material proved to be defective. Users must make their own determination of product suitability for a particular purpose under the user’s own operatingconditions prior to use of any product No representative of ours has any authority to waive or change this provision. Do not use any product until the current Material Safety Data Sheet has beenread and is fully understood.3601 North Interstate 35Gainesville, Texas 76240Tel. (940) 668 1062; Fax. (940) 668 1061www.ifscos.com Email: info@ifscos.com

Salt Spray Test Report(Per ASTM B117)At 1000 hoursThis report should serve as a general guide and IFS COATINGS assumes no obligation or liability for use of this information. This report is for the exclusive use of the customer to whom it isaddressed. This test report shall not be reproduced, except in full, without written approval from the laboratory. Any recommendations contained herein or any information given by any IFSCOATINGS representative is based on tests and information believed to be accurate. Since coating performance characteristics are greatly influenced by conditions of substrate, surfacepreparation, application procedures, curing procedures and other local factors beyond IFS Powder Coatings’ control, IFS Powder Coatings assumes no liability for coating failure other than tosupply replacement material for a coating material proved to be defective. Users must make their own determination of product suitability for a particular purpose under the user’s own operatingconditions prior to use of any product No representative of ours has any authority to waive or change this provision. Do not use any product until the current Material Safety Data Sheet has beenread and is fully understood.3601 North Interstate 35Gainesville, Texas 76240Tel. (940) 668 1062; Fax. (940) 668 1061www.ifscos.com Email: info@ifscos.com

Salt Spray Test Report(Per ASTM B117)This report should serve as a general guide and IFS COATINGS assumes no obligation or liability for use of this information. This report is for the exclusive use of the customer to whom it isaddressed. This test report shall not be reproduced, except in full, without written approval from the laboratory. Any recommendations contained herein or any information given by any IFSCOATINGS representative is based on tests and information believed to be accurate. Since coating performance characteristics are greatly influenced by conditions of substrate, surfacepreparation, application procedures, curing procedures and other local factors beyond IFS Powder Coatings’ control, IFS Powder Coatings assumes no liability for coating failure other than tosupply replacement material for a coating material proved to be defective. Users must make their own determination of product suitability for a particular purpose under the user’s own operatingconditions prior to use of any product No representative of ours has any authority to waive or change this provision. Do not use any product until the current Material Safety Data Sheet has beenread and is fully understood.3601 North Interstate 35Gainesville, Texas 76240Tel. (940) 668 1062; Fax. (940) 668 1061www.ifscos.com Email: info@ifscos.com