Georg Fischer LLC 9271 Jeronimo Road Irvine, CA 92618 United States Phone +1 714 731 88 00 us.ps@georgfischer.com www.us.piping.georgefischer.com

Terence Zhao Phone +01 714 368 4258 Fax Mobile terence.zhao@georgfischer.com

RE: Independent Chemical Testing of PP, PVDF and CPVC Special Waste Piping Systems When CPVC special waste piping systems was first introduced to the market, skepticism arose concerning the material's ability to safely convey an array of discharged chemistries from laboratory facilities. As a result, Battery Design LLC has commissioned an independent testing of PP, PVDF, and CPVC special waste piping systems to visually measure their integrity when conveying certain waste streams of chemistries; which are commonly used in various laboratory applications. Following, is a copy of the final report of this test. Thank you. Terence Zhao EPS Product Manager

Results of Chemical Testing

July 26, 2007 to August 9, 2007

2

Test Protocol

3

Weight Change per P-trap TypeArea Block Chart

The CPVC samples have the largest weight gains for all chemicals.

Diethylene Glycol Dibutyl Ether

Toluene

MEK

Benzene

XyleneAcetone

DMSODMF

ChemDrain™CPVC

Fuseal® PP Fuseal 25/50™PVDF

LabWaste™CPVC

0.0%

2.0%

4.0%

6.0%

8.0%

10.0%

12.0%

14.0%

16.0%

18.0%

wei

ght p

erce

nt

Weight Change per P-trap Type by Chemical

4

Weight Change per P-trap TypeLine Chart

Percent Weight Change per P-trap Type

0.0%

2.0%

4.0%

6.0%

8.0%

10.0%

12.0%

14.0%

16.0%

18.0%

20.0%

P-trap Type and Chemicals

ChemDrain™CPVC

3.2% 7.1% 5.1% 7.9% 9.9% 6.2% 12.9% 9.5%

Fuseal® PP 0.7% 1.7% 0.3% 2.1% 1.1% 0.2% 0.6% 0.4%

Fuseal 25/50™ PVDF 0.2% 0.0% 1.0% 0.1% 0.0% 3.2% 0.8% 2.1%

LabWaste™ CPVC 2.5% 3.4% 2.7% 3.5% 6.4% 2.1% 17.5% 7.5%

Diethylene Glycol Dibutyl

EtherToluene MEK Benzene Xylene Acetone DMSO DMF

The CPVC samples have the largest weight gains for all chemicals.

5

Weight Change, Pressure Test, Solvent Check

P-Trap Type : A=ChemDrainTM CPVC, B=Fuseal® PP, C=Fuseal 25/50TM PVDF, D=LabWasteTM CPVC

Solvent : 1=Diethylene Glycol Dibutyl Ether, 2= Toluene, 3=MEK, 4=Benzene, 5=Xylene, 6=Acetone, 7=DMSO, 8=DMF

SampleInitial

Pressure Check

Final Pressure CheckInitial

Weight (g)Final

Weight (g)Percent Weight

ChangeSolvent Tested Solvent Characteristics

1A OK OK 813.6 839.5 3.2% Strong yellow 1B OK OK 581.7 585.8 0.7% Clear1C OK OK 825.8 827.8 0.2% Clear 1D OK OK 804.3 824.1 2.5% Light Yellow2A OK Fail/ballooned up & popped 814.2 872.0 7.1% No Liquid2B OK OK 581.6 591.6 1.7% Clear/slight blue tint 2C OK OK 827.6 827.9 0.0% Clear/slight blue tint 2D OK Fail 802.6 829.6 3.4% No Liquid3A OK Fail 813.6 854.9 5.1% No Liquid3B OK OK 582.2 584.0 0.3% Yellow tint/blue small particles/chunk of o-rings 3C OK OK 824.1 832.0 1.0% Yellow tint/blue small particles/chunk of o-rings3D OK Fail 817.9 840.3 2.7% No Liquid4A OK Fail/Blow-out 812.6 877.1 7.9% No Liquid4B OK OK 580.5 592.8 2.1% Clear 4C OK OK 825.6 826.1 0.1% Clear 4D OK Fail 807.6 835.5 3.5% No Liquid5A OK Fail/Blow-out 814.7 895.4 9.9% No Liquid5B OK OK 580.3 586.9 1.1% Small blue particles, clear/light blue tint 5C OK OK 828.9 829.2 0.0% Clear/light blue tint5D OK Fail 815.4 867.6 6.4% No Liquid

6A OK

Passed the pressure check but structural integrity visibly

compromised.817.7 868.7

6.2%

No Liquid6B OK OK 576.8 577.9 0.2% Yellow/gasket particles6C OK OK 832.1 858.6 3.2% light yellow/gasket particles6D OK Fail 820.1 837.2 2.1% No Liquid7A OK OK 812.4 917.0 12.9% Stron yellow/white particles7B OK OK 583.6 587.0 0.6% Clear/blue particles7C OK OK 830.8 837.3 0.8% Clear7D OK OK 805.0 945.5 17.5% Yellow/white particles8A OK Fail 814.1 891.8 9.5% No Liquid8B OK OK 583.2 585.8 0.4% Clear8C OK OK 831.0 848.3 2.1% Blue Tint8D OK Fail 807.8 868.3 7.5% No Liquid

Xylene

Acetone

DMSO

DMF

Diethylene Glycol Dibutyl Ether

Toluene

MEK

Benzene

6

Diethylene Glycol Dibutyl Ether

14 days

1A 1B

14 days14 days

1D

14 days

1C

7

Diethylene Glycol Dibutyl Ether1 - Diethylene Glycol Dibutyl Ether

Date & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change No Change7/29/07 PM No Change No Change No Change No Change7/30/07 AM No Change No Change No Change No Change7/30/07 PM No Change No Change No Change No Change7/31/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change7/31/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/1/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/1/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/2/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/2/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/3/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/3/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/4/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/4/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/5/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/5/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/6/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/6/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/7/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/7/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/8/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change8/8/07 PM No Change Knob at bottom of u-tube looks discolored No Change No Change8/9/07 AM No Change Knob at bottom of u-tube looks discolored No Change No Change

8

Toluene

2B

2C

14 days: no change

6 days: stress cracking, discoloration,deflection, leakage occurs

14 days: no change14 days: no liquid

2D

2A5 days: stress cracking,

deflection,and discoloration

14 days: 7.1% weight gain, noliquid left, failed pressure check

2A

2D

9

Toluene2 - TolueneDate & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change No Change7/29/07 PM No Change No Change No Change No Change7/30/07 AM No Change No Change No Change Stress cracking & white discoloration on u-tube7/30/07 PM No Change No Change No Change Discoloration & stress cracking7/31/07 AM Cracking & white discoloration on various portions of u-tube No Change No Change Large deflection visible along with cracking on u-tube7/31/07 PM No Change No Change No Change Large deflection and chemical stress lines8/1/07 AM Discoloration & large deflections present, stress cracking visible No Change No Change Stress cracking visible, discoloration & large deflection present, leakage occuring & visible8/1/07 PM No Change No Change No Change Failed 8/1/078/2/07 AM Discoloration & large deflections present, stress cracking visible No Change No Change Failed 8/1/078/2/07 PM Discoloration & large deflections present, stress lines visible No Change No Change Failed 8/1/078/3/07 AM Discoloration, moderate deflection, stress cracking No Change No Change Failed 8/1/078/3/07 PM Discoloration, moderate deflection, stress lines No Change No Change Failed 8/1/078/4/07 AM Moderate deflection, chemical stress lines, discoloration No Change No Change Failed 8/1/078/4/07 PM Swelling, stress lines on u-tube No Change No Change Failed 8/1/078/5/07 AM Discoloration, deflection, stress lines No Change No Change Failed 8/1/078/5/07 PM Swelling at u-joint No Change No Change Failed 8/1/078/6/07 AM Discoloration, moderate deflection, stress cracking/swelling No Change No Change Failed 8/1/078/6/07 PM Moderate deflection, chemical stress lines, discoloration No Change No Change Failed 8/1/078/7/07 AM Stress cracking/swelling No Change No Change Failed 8/1/078/7/07 PM Swelling, deflection, discoloration No Change No Change Failed 8/1/078/8/07 AM Swelling, stress lines, deflection, discoloration No Change No Change Failed 8/1/078/8/07 PM Swelling, stress cracking No Change No Change Failed 8/1/078/9/07 AM Swelling, stress lines, deflection, discoloration No Change No Change Failed 8/1/07

10

Methyl Ethyl Ketone

3A

3A 3B

3C

3D

3D

9 days: deflection, leakage

14 days: no liquid left

14 days: 5.1% weight gain, no liquid left 14 days: no change

14 days: no change

4 days: failure occurredon day 3

11

Methyl Ethyl Ketone3 - MEK

Date & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change Leakage at bottom7/29/07 PM No Change No Change No Change Hole through bottom, fluids leaked out7/30/07 AM No Change No Change No Change Hole At bottom portion of u-tube, failure occurred7/30/07 PM No Change No Change No Change Failure occurred 7/29/077/31/07 AM No Change No Change No Change Failure occurred 7/29/077/31/07 PM No Change No Change No Change Failure occurred 7/29/078/1/07 AM Discoloration & stress cracking, no visible leakage No Change No Change Failure occurred 7/29/078/1/07 PM No Change No Change No Change Failure occurred 7/29/078/2/07 AM Discoloration & stress cracking, no visible leakage No Change No Change Failure occurred 7/29/078/2/07 PM Asimmetrical moderate deflection, discoloration, stress lines No Change No Change Failure occurred 7/29/078/3/07 AM Discoloration, deflection, stress cracking No Change No Change Failure occurred 7/29/078/3/07 PM Moderate deflection, discoloration, strss lines No Change No Change Failure occurred 7/29/078/4/07 AM Discoloration, deflection, stress cracking No Change No Change Failure occurred 7/29/078/4/07 PM Break through at weld point, failure occurred No Change No Change Failure occurred 7/29/078/5/07 AM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/5/07 PM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/6/07 AM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/6/07 PM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/7/07 AM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/7/07 PM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/8/07 AM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/8/07 PM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/078/9/07 AM Failure occurred 8/4/07 No Change No Change Failure occurred 7/29/07

12

Benzene

4A4B

4C

14 days: no change

14 days: no change

14 days: 7.9% weight gain, no liquid left

4D

6 days: large deflection, stress cracking, leakage

14 days: no liquid

4D

7 days: stress cracking, deflection, leakage

4A

13

Benzene4 - BenzeneDate & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change No Change7/29/07 PM No Change No Change No Change No Change7/30/07 AM No Change No Change No Change No Change7/30/07 PM No Change No Change No Change No Change7/31/07 AM No Change No Change No Change No Change7/31/07 PM No Change No Change No Change No Change8/1/07 AM White stress cracking occurred near top of u-tube No Change No Change Large deflection & stress cracking present, leakage occurred8/1/07 PM No Change No Change No Change Failure occurred 8/1/078/2/07 AM Deflection & large stress cracking, no visible leakage No Change No Change Failure occurred 8/1/078/2/07 PM Discoloration, deflection, leakage No Change No Change Failure occurred 8/1/078/3/07 AM Deflection, severe stress cracking (white stress lines) No Change No Change Failure occurred 8/1/078/3/07 PM Severe stress lines. Deflection, discoloration No Change No Change Failure occurred 8/1/078/4/07 AM Severe deflection (swelling), discoloration, stress lines No Change No Change Failure occurred 8/1/078/4/07 PM Swelling/bulging, stress cracks, soft to touch No Change No Change Failure occurred 8/1/078/5/07 AM Swelling, deflection, discoloration No Change No Change Failure occurred 8/1/078/5/07 PM Swelling, cracks, maluable No Change No Change Failure occurred 8/1/078/6/07 AM Deflection, severe stress cracking (white stress lines) No Change No Change Failure occurred 8/1/078/6/07 PM Swelling, stress lines very visible, deflection No Change No Change Failure occurred 8/1/078/7/07 AM Stress lines & swelling No Change No Change Failure occurred 8/1/078/7/07 PM Deflection, swelling, stress lines No Change No Change Failure occurred 8/1/078/8/07 AM Deflection, swelling, stress lines No Change No Change Failure occurred 8/1/078/8/07 PM Swelling, deflection No Change No Change Failure occurred 8/1/078/9/07 AM Deflection, swelling, stress lines No Change No Change Failure occurred 8/1/07

14

Xylene

5B5A

5C 5D

5D

14 days: 9.9% weight gain, no liquid left, failed pressure check

14 days: no change

14 days: no change 9 days: severe swelling, stress lines, leakage

14 days: 6.4% weight gain, no liquid left

5A

9 days: severe swelling, stress cracks, soft to touch

15

Xylene5 - Xylene

Date & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change No Change7/29/07 PM No Change No Change No Change No Change7/30/07 AM No Change No Change No Change No Change7/30/07 PM No Change No Change No Change No Change7/31/07 AM No Change No Change No Change No Change7/31/07 PM No Change No Change No Change No Change8/1/07 AM No Change No Change No Change No Change8/1/07 PM No Change No Change No Change No Change8/2/07 AM No Change No Change No Change No Change8/2/07 PM No Change No Change No Change No Change8/3/07 AM Stress cracking is evident near top of u-tube No Change No Change Deflection & stress cracking visible8/3/07 PM Stress cracking, swelling discoloration No Change No Change Deflection & stress cracking visible8/4/07 AM Severe stress cracking (white lines) deflection, discoloration No Change No Change Swelling, stress lines visible8/4/07 PM Severe swelling, stress lines, soft to touch No Change No Change Severe swelling, stress lines, leakage currently visible8/5/07 AM Swelling, stress lines, discoloration No Change No Change Failure occurred 8/4/078/5/07 PM Swelling, cracks No Change No Change Failure occurred 8/4/078/6/07 AM Severe stress cracking (white lines) deflection, discoloration No Change No Change Failure occurred 8/4/078/6/07 PM Swelling, stress lines, deflection No Change No Change Failure occurred 8/4/078/7/07 AM Swelling, stress lines, soft to touch No Change No Change Failure occurred 8/4/078/7/07 PM Stress cracking, swelling, deflection, discoloration No Change No Change Failure occurred 8/4/078/8/07 AM Stress cracking, swelling, deflection, discoloration No Change No Change Failure occurred 8/4/078/8/07 PM Deflection, swelling, color change, cracking No Change No Change Failure occurred 8/4/078/9/07 AM Stress lines/swelling, deflections, discoloration No Change No Change Failure occurred 8/4/07

16

Acetone

6A 6B

6C

6D6D

6A5 days: deflection, stress cracking

14 days: 6.2% weight gain, no liquid left, structural integrity after pressure check visibly compromised

14 days: no change

14 days: no change

14 days: failed pressure check, no liquid left

3 days: leakage

17

Acetone6 - AcetoneDate & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change Possible leak7/29/07 PM No Change No Change No Change Hole at bottom seam & back of u-tube, fluids leaked out7/30/07 AM No Change No Change No Change Small hole at bottom at weld line, failure occurred7/30/07 PM No Change No Change No Change Failure occurred 7/29/077/31/07 AM Small deflections visible, discoloration No Change No Change Failure occurred 7/29/077/31/07 PM Discoloration, chemical stress cracking No Change No Change Failure occurred 7/29/078/1/07 AM Discoloration, stress cracking, no visible leakage No Change No Change Failure occurred 7/29/078/1/07 PM No visible changes from previous data observations. No Change No Change Failure occurred 7/29/078/2/07 AM Discoloration, stress cracking visible, no leakage visible No Change No Change Failure occurred 7/29/078/2/07 PM Moderate discoloration, slight deflection, no leakage No Change No Change Failure occurred 7/29/078/3/07 AM Discoloration & stress cracking is light, no leakage No Change No Change Failure occurred 7/29/078/3/07 PM Discoloration, stress cracking visible, no leakage visible No Change No Change Failure occurred 7/29/078/4/07 AM Moderate discoloration, slight deflection, no leakage No Change No Change Failure occurred 7/29/078/4/07 PM Slight swelling, slight stress cracking, no leakage No Change No Change Failure occurred 7/29/078/5/07 AM Swelling, stress cracking No Change No Change Failure occurred 7/29/078/5/07 PM Swelling, wrinkles, distortion No Change No Change Failure occurred 7/29/078/6/07 AM Discoloration, stress cracking is light No Change No Change Failure occurred 7/29/078/6/07 PM Discoloration, stress lines No Change No Change Failure occurred 7/29/078/7/07 AM Soft to touch, slight cracking, not swelled No Change No Change Failure occurred 7/29/078/7/07 PM Slight Deflection, stress cracking and swelling No Change No Change Failure occurred 7/29/078/8/07 AM Slight Deflection, stress cracking and swelling No Change No Change Failure occurred 7/29/078/8/07 PM Slight Deflection, stress cracking and swelling No Change No Change Failure occurred 7/29/078/9/07 AM Slight Deflection, stress cracking and swelling No Change No Change Failure occurred 7/29/07

18

DMSO

7A 7B

7C 7D

14 days: no change

14 days: no change

14 days: crack at weld, 17.5% weight gain

14 days: 12.9% weight gain

19

DMSO7 - DMSO

Date & Time Tube A Tube B Tube C Tube D7/27/07 PM No Change No Change No Change No Change7/28/07 AM No Change No Change No Change No Change7/28/07 PM No Change No Change No Change No Change7/29/07 AM No Change No Change No Change No Change7/29/07 PM No Change No Change Wet underneath pipe, no visible hole No Change7/30/07 AM No Change No Change No Change Cracking developing at weld line on bottom of u-tube, no leakage visible 7/30/07 PM No Change No Change No Change No change in crack7/31/07 AM No Change No Change No Change No change in crack7/31/07 PM No Change No Change No Change No change in crack8/1/07 AM No Change No Change No Change No change in crack8/1/07 PM No Change No Change No Change No change in crack8/2/07 AM No Change No Change No Change Crack still present, but does not appear to have grown8/2/07 PM No Change No Change No Change No change in crack8/3/07 AM No Change No Change No Change No change in crack8/3/07 PM No Change No Change No Change No change in crack8/4/07 AM No Change No Change No Change No change in crack8/4/07 PM No Change No Change No Change No change in crack8/5/07 AM No Change No Change No Change No change in crack8/5/07 PM No Change No Change No Change No change in crack8/6/07 AM No Change No Change No Change No change in crack8/6/07 PM No Change No Change No Change No change in crack8/7/07 AM No Change Leakage occuring No Change No change in crack8/7/07 PM No Change No Change No Change No change in crack8/8/07 AM No Change No Change No Change No change in crack8/8/07 PM No Change No Change No Change No change in crack8/9/07 AM No Change No Change No Change No change in crack

20

Dimethyl Formamide

8A

8D

8D8C

8B8A

14 days: no liquid left, 9.5% weight gain

7 days: large deflection, holes, discoloration, leakage 14 days: no change

14 days: no change

14 days: 7.5% weight gain, no liquid left

6 days: leakage

21

Dimethyl Formamide