CONFIDENTIAL Copyright © 2006 DuPont or its affiliates. All rights reserved. New Refrigerant Product Prepared for: Whole Foods Market

2 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. R-22 Is Going Away Important Facts: 1.58% Supply Reduction Jan 1, demand exceeds supply by more than 27 Million pounds demand exceeds supply by more than 22 Million pounds *Based on December 23, 2008 EPA Allocation Draft Proposal to set HCFC limits to meet phasedown caps under the Montreal Protocol. **“The U.S. Phaseout of HCFCs: Projected Servicing Needs in the U.S. Air Conditioning and Refrigeration Sector,” June 2008 R-22 Estimates based upon EPA Projections in lbs: 2010 Supply estimate adjusted to EPA Proposed Allowance Rule* = 110 Million 2010 Demand estimate from U.S. Projected Servicing Needs** = 137 Million

3 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. DuPont R22 Retrofit Refrigerant: ISCEON® MO99 New Refrigerant Product Embodies our learning with R22 replacement refrigerants Currently in 8 supermarket refrigeration and retail commercial air conditioning Refrigeration systems Air Conditioning systems Feedback from supermarkets and contractors very positive R number pending assignment by Ashrae on July 2009 (R438A)

4 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. DuPont R22 Retrofit Refrigerant: ISCEON® MO99 Benefits Lower First Cost No line set changes No oil change No EPR plugging or TXV strainer plugging No TXV Changes Standard elastomeric seal changes (gaskets, o-rings, sight glass etc) Select modifications No condenser, receiver modifications Minimal control adjustments Energy Performance Lowest overall energy consumption of any R22 replacement refrigerant Lowest Total Cost of Ownership Carbon Footprint 42% lower GWP vs. 404A

5 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. No Line Set Changes Are Required MO99 Suction Line capacity within ~10% ofR22

6 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. No Line Set Changes Are Required MO99 Liquid Line capacity within ~10% ofR22

7 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. ISCEON® Refrigerants: No Oil Change Required

8 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

9 No TXV Changes Required for Properly Sized R22 TXVs

10 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Elastomeric Seal Changes Required: Minimize Potential for Leaks HFC refrigerants cause seals to swell at a different rate than HCFC/CFC refrigerants Seal changes recommended for all HFC refrigerants (R404A, R507, ISCEON® Refrigerants)

11 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

12 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Minimal Control Adjustments Evaporator and condenser pressures are similar to R-22. No set point changes are needed during the retrofit; however, some minor adjustments may be necessary to optimize system performance after the retrofit.

13 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Carlyle Compressor Test Conditions Used ARI 540 Standard for Performance Rating of Compressors Suction 65 F All superheat included in capacity Low Temperature: Carlyle Compound Compressor 06CC228 Avg Evaporator T at -25 F; Avg Condenser T at 80 F, 105 F, 120 F Subcool Liquid 50 F, 70 F, and 90 F for low temp Liquid Injection Control T at 230 F (Carlyle recommendation) on discharge line (6” from compressor exit) Medium Temperature: Carlyle Single Stage 06DR820 Avg Evaporator T at 20 F; Avg Condenser T at 80 F, 105 F, 120 F Subcool Liquid T at 10 F from Avg Cond T

14 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

15 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

16 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

17 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

18 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Copeland Compressor Test Conditions Used ARI 540 Standard for Performance Rating of Compressors Suction 65 F All superheat included in capacity Low Temperature: Copeland Discus® Compressor 3DS3F46KE Avg Evaporator T at -25 F; Avg Condenser T at 80 F, 105 F, 120 F Subcool Liquid T at 10 F from Avg Cond T Liquid Injection Control T at 275 F Medium Temperature: Copeland Discus® Compressor 2DA3R89KE Avg Evaporator T at 20 F; Avg Condenser T at 80 F, 105 F, 120 F Subcool Liquid T at 10 F from Avg Cond T

19 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

20 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

21 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

22 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

23 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

24 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

25 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Lowest Total Cost of Ownership Typical Supermarket Assumptions: Based upon Carlyle Compressor results 2 Low Temp Racks 2 Med Temp Racks Operating Costs based upon 8 year NPV calculation

26 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Carbon Footprint

27 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. DuPont R22 Retrofit Refrigerant: ISCEON® MO99 Benefits First Cost No line set changes No oil change No EPR plugging or TXV strainer plugging No TXV Changes Standard elastomeric seal changes (gaskets, o-rings, sight glass etc) Select modifications No condenser, receiver modifications Minimal control adjustments Energy Lowest overall energy consumption of any R22 replacement refrigerant Lowest Total Cost of Ownership Carbon Footprint 42% lower GWP vs. 404A

28 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Note: Referenced to unit delta T of -4 degree F, which is typical of conditions with no cooling coils in service. Air Conditioning Retrofit

29 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Field Supermarket Retrofit Test at Source Refrigeration Training Facility – Chino, CA Source CTC refrigeration rack tested at medium temperature (MT) conditions 3 Carlyle Single Stage Compressors 6 Active Circuits on Rack Danfoss AKcess AKA65 Data System for monitoring key process variables TempRite 925R Oil Separator (oil reservoir is part of unit) Russell VAC-25 Rooftop Condenser (Air cooled) 14” x 60” Liquid Receiver with Liquid Drier on discharge line from receiver Two Subcoolers in Parallel: one large flooded subcooler (SCT-9); one small plate subcooler (original - Alfa Laval CB26-18H) Four test conditions in test matrix run at varying discharge pressures and liquid subcool temperatures Tested R-22 baseline and ISCEON® MO99 with mineral oil (no oil change)

30 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. MO99 has similar energy consumption as R-22

31 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved.

32 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Chino Facility Test Conclusions Hourly energy consumption of ISCEON® MO99 was statistically the same as R-22 within the variability of the data Suction and discharge pressures of ISCEON® MO99 were similar to R-22. Minimal control setting changes were required Use of liquid subcooling improved ISCEON® MO99 energy performance Case temperatures with ISCEON® MO99 were similar to case temperatures with R-22

33 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Supermarket Med Temp Retrofit: Temperature Impact on MO99 and R22 Energy MO99 Regression Equation: R 2 : 81.4%; Energy = E-MO99 Temperature R22 Regression Equation: R 2 : 53.5%: Energy = E-R22 Temperature NJ Supermarket – Med Temp Rack 20F SST / 110F Tcond Air cooled Condenser 18 circuits – produce, dairy, deli and walk-in coolers Data collected over 4 months

34 CONFIDENTIAL Copyright © 2008 DuPont or its affiliates. All rights reserved. Contact Us Steven MacWilliams Director, National Service Sales Christina Spalding Sr. Account Manager (480) Nick Strickland Marketing Development Manager (302) (302) Bryan Beitler Vice President, Chief Engineer Charles “Chuck” Allgood Technical Service Senior Consultant (302) LaShawanda Moore Marketing Programs/Literature (302)