IRON LaboratoriesPJLA

ISO/IEC 17025:2005 Accredited

Marihuana Potency Analysis by
High Performance Liquid Chromatography

Testing Accreditation #: 77802 Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: FE04U HPLC1100-1

Test Conditions

Prepsheet ID#: MIP190205a
Scale: XS205-MI2
Temp: 22.9 °C
Baro PE: 983.7 hPa
Analyst: JRT
Technician: JRT

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019
Test Date: 02/05/2019

Sample #114847
Sample #114847 Sample #114847
Test
Compounds
THC THCA CBD CBDA CBN CBG* CBC* THCV* CBDV* Total
Cannabinoids*
Total THC Total CBD Calc Max Total
Cannabinoids*
Amount (%) 4.0 0 75.7 0 0 1.9 6.0 0 0.6 88.2 4.0 75.7 88.2
Amount (mg/g) 39.5 N/D 756.8 N/D N/D 19.4 60.0 N/D 6.1 881.8 39.5 756.8 881.8
Amount per Serving (mg) 39.5 N/D 756.8 N/D N/D 19.4 60.0 N/D 6.1 881.8 Serving Size~ (g): 1.0
LOQ (mg/g) 3.43 3.43 3.43 3.43 3.43 3.43 3.43 3.43 3.43   %Decarb. THC CBD
±%RPD 10.3 16.0 0.8 0.4 3.6 0.6 33.5 9.2 2.4 100% 100%

LOQ = Limit of Quantitation; %RPD = Relative Percent Deviation; %RSD = Relative Standard Deviation; N/D = Not Detected

*Designates values that are not currently included in the accredited scope of Iron Laboratories Michigan.

*** Designates tests that use the method FE-45.

Total THC and CBD is the calculated sum of THC or CBD and the amount of THC or CBD derived from THCA or CBDA, respectively. These values are calculated by applying a molar correction factor of 0.877 to the THCA or the CBDA value. Calc Max Total Cannabinoids is the sum of Total THC, Total CBD, CBN, CBG, CBC, THCV, and CBDV.

%Decarb. THC and CBD refers to the percentage of THC or CBD relative to THCA or CBDA, respectively.

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

ACR - LM Iron laboratories ACR - LM

Iron Laboratories, LLC is an ISO/IEC 17025:2005 Testing Laboratory laboratory, accredited by (PJLA) Perry Johnson Laboratory Accreditation, Certificate No. 77802

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 1 of 6

IRON LaboratoriesPJLA

ISO/IEC 17025:2005 Accredited

QC Report

Testing Accreditation #: 77802 Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: FE04U HPLC1100-1

Test Conditions

Prepsheet ID#: MIP190205a
Scale: XS205-MI2
Temp: 22.9 °C
Baro PE: 983.7 hPa
Analyst: JRT
Technician: JRT

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019
Test Date: 02/05/2019

Sample #114847
Target Compound Name Method Blank (μg/g) LCS Spike (μg/g) LCS Amount (μg/g) Percent Recovery (%) LCS LCS Duplicate Amount (μg/g) Percent Recovery (%) LCSD Relative Percent Difference (%) QC Flag
Cannabidivarin (CBDV) 0 1.809446514 1.900673411 105.04 1.855351754 102.54 2.41%
Cannabidiolic Acid (CBDA) 0 5.192333592 5.201552154 100.18 5.22346173 100.60 0.42%
Cannabigerol (CBG) 0 3.958840979 3.851067995 97.28 3.874836857 97.88 0.62%
Cannabidiol (CBD) 0 5.346089014 5.404825681 101.10 5.363351725 100.32 0.77%
Δ9-Tetrahydrocannabivarin (THCV) 0 2.858220385 2.812109277 98.39 2.565061195 89.74 9.19%
Cannabinol (CBN) 0 5.305974226 5.22666149 98.51 5.044584731 95.07 3.55%
Δ9-Tetrahydrocannabinol (THC) 0 7.175521692 7.166441401 99.87 6.46286639 90.07 10.32%
Cannabichromene (CBC) 0 5.898039348 5.968082371 101.19 4.254046271 72.13 33.54%
Tetrahydrocannabinolic acid (THCA) 0 6.612558349 6.485882325 98.08 5.524065276 83.54 16.02%

N.D. = Not Detected

LR = indicates compound recovery of matrix spike was outside the methods acceptable limits. (70-130%) Low recovery should be scrutinized for possible fail as it could indicate more compound present than is detected.

I = indicates that an amount of an interfering compound greater than the methods limit of detection was detected in the method blank sample. May indicate contamination of analytical system or consumables.

Q = indicates that the relative percent diference of two identicly prepared Matrix Spike samples for a target analyte was greater than 20%

HR = indicates compound recovery of matrix spike was outside the methods acceptable limits. (70-130%) high recoveries should be scrutinized for passing as more compound may be detected than is actually present in the sample.

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

ACR - LM Iron laboratories ACR - LM

Iron Laboratories, LLC is an ISO/IEC 17025:2005 Testing Laboratory laboratory, accredited by (PJLA) Perry Johnson Laboratory Accreditation, Certificate No. 77802

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 2 of 6

IRON Laboratories

Pesticide Analysis by
Mass Spectrometer

Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: FE-52 (EN 15662 & AOAC 2007.01)

Test Conditions

Prepsheet ID#: MIPS190205a
Scale: XS205-MI2
Temp: 20.0 °C
Baro PE: 980.0 hPa
Analyst: MEH
Technician: MEH

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019
Test Date: 02/05/2019

Sample #114847
Compound MRL (µg/g) LOD (µg/g) Status (µg/g)   Compound MRL (µg/g) LOD (µg/g) Status (µg/g)
Aldicarb 0.400 0.127 Pass/<LOD Abamectin**** 0.500 0.127 Pass/<LOD
Acephate 0.400 0.127 Pass/<LOD Acequinocyl 2.000 0.255 Pass/<LOD
Acetamiprid 0.200 0.127 Pass/<LOD Azoxystrobin 0.200 0.127 Pass/<LOD
Bifenazate 0.200 0.127 Pass/<LOD Bifenthrin 0.200 0.127 Pass/<LOD
Boscalid 0.400 0.127 Pass/<LOD Carbaryl 0.200 0.127 Pass/<LOD
Carbofuran 0.200 0.127 Pass/<LOD Chlorantraniliprole 0.200 0.127 Pass/<LOD
Chlorfenapyr 1.000 0.509 Pass/<LOD Chlorpyrifos 0.200 0.127 Pass/<LOD
Clofentezine 0.200 0.127 Pass/<LOD Cyfluthrin** 1.000 0.509 Pass/<LOD
Cypermethrin*** 1.000 0.509 Pass/<LOD Daminozide 1.000 0.509 Pass/<LOD
DDVP (Dichlorvos) 1.000 0.255 Pass/<LOD Diazinon 0.200 0.127 Pass/<LOD
Dimethoate 0.200 0.127 Pass/<LOD Ethoprophos 0.200 0.127 Pass/<LOD
Etofenprox 0.400 0.127 Pass/<LOD Etoxazole 0.200 0.127 Pass/<LOD
Fenoxycarb 0.200 0.127 Pass/<LOD Fenpyroximate 0.400 0.127 Pass/<LOD
Fipronil 0.400 0.127 Pass/<LOD Flonicamid 1.000 0.127 Pass/<LOD
Fludioxonil 0.400 0.127 Pass/<LOD Hexythiazox 1.000 0.127 Pass/<LOD
Imazalil 0.200 0.127 Pass/<LOD Imidacloprid 0.400 0.127 Pass/<LOD
Kresoxim Methyl 0.400 0.127 Pass/<LOD Malathion 0.200 0.127 Pass/<LOD
Metalaxyl 0.200 0.127 Pass/<LOD Methiocarb 0.200 0.127 Pass/<LOD
Methomyl 0.400 0.127 Pass/<LOD Methyl Parathion 0.200 0.127 Pass/<LOD
MGK-264‡ 0.200 0.127 Pass/<LOD Myclobutanil 0.200 0.127 Pass/<LOD
Naled 0.500 0.127 Pass/<LOD Oxamyl 1.000 0.127 Pass/<LOD
Paclobutrazol 0.400 0.127 Pass/<LOD Permethrins† 0.200 0.127 Pass/<LOD
Phosmet 0.200 0.127 Pass/<LOD Piperonyl Butoxide 2.000 2.036 Pass/<LOD
Prallethrin 0.200 0.127 Pass/<LOD Propiconazole 0.400 0.127 Pass/<LOD
Propoxur 0.200 0.127 Pass/<LOD Pyrethrins* 1.000 0.127 Pass/<LOD
Pyridaben 0.200 0.127 Pass/<LOD Spinosad***** 0.200 0.127 Pass/<LOD
Spiromesifen 0.200 0.127 Pass/<LOD Spirotetramat 0.200 0.127 Pass/<LOD
Spiroxamine‡ 0.400 0.127 Pass/<LOD Tebuconazole 0.400 0.127 Pass/<LOD
Fenoxycarb 0.200 0.127 Pass/<LOD Thiamethoxam 0.200 0.127 Pass/<LOD
Trifloxystrobin 0.200 0.127 Pass/<LOD

* Pyrethrins are reported as the sum of Jasmolin I, Cinerin I, and Pyrethrin I
** Cyfluthrins are reported as the sum of isomers Cyfluthrin I, II, III, and IV
*** Cypermethrins are reported as the sum of isomers Cypermethrin I, II, III, and IV
**** Abamectin is reported as the sum of Avermectin B1a and Avermectin B1b
***** Spinosad is reported as the sum of Spinosyn A and Spinosyn D
† Permethrin and Prallethrin are reported as the sum of cis and trans isomers
‡ MGK-264 and Spiroximine are reported as the sum of isomers I and II
MRL - Maximum Residue Limit; LOD - Limit of Detection

Sample was sampled and tested in accordance with the Safety Compliance Facility Information published on September 28, 2018.

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

MEH QM Iron laboratories MEH QM

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 3 of 6

IRON Laboratories

Pesticide QC Report

Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: FE-52 (EN 15662 & AOAC 2007.01)

Test Conditions

Prepsheet ID#: MIPS190205a
Scale: XS205-MI2
Temp: 20.0 °C
Baro PE: 980.0 hPa
Analyst: MEH
Technician: MEH

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019
Test Date: 02/05/2019

Sample #114847
Target Compound Name Method Blank (μg/g) QC Spike (μg/g) Matrix Spike (μg/g) Matrix Spike Duplicate (μg/g) MS recovery% MSD recovery% Relative Percent Difference (%) QC Flag
Acephate N.D. 1 1.16 1.12 116.00 112.00 3.51
Acequinocyl N.D. 1 0.777 0.902 77.70 90.20 14.89
Acetamiprid N.D. 1 1.19 1.3 119.00 130.00 8.84
Aldicarb N.D. 1 0.967 1.29 96.70 129.00 28.62 Q
Avermectin B1a N.D. 0.97 1.06 0.972 109.28 100.21 8.66
Azoxystrobin N.D. 1 1.1 1.29 110.00 129.00 15.90
Bifenazate N.D. 1 0.496 0.822 49.60 82.20 49.47 LRQ
Bifenthrin N.D. 1 0.935 0.988 93.50 98.80 5.51
Boscalid N.D. 1 1.23 1.23 123.00 123.00 0.00
Carbaryl N.D. 1 1.26 1.3 126.00 130.00 3.13
Carbofuran N.D. 1 1.14 1.21 114.00 121.00 5.96
Chlorantraniliprole N.D. 1 0.952 1.14 95.20 114.00 17.97
Chlorfenapyr N.D. 1 1.29 1.28 129.00 128.00 0.78
Chlorpyriphos N.D. 1 0.949 1.13 94.90 113.00 17.41
Clofentezine N.D. 1 1 1.08 100.00 108.00 7.69
Cyfluthrin N.D. 1 0.882 0.898 88.20 89.80 1.80
Cypermethrin N.D. 1 1.06 1.06 106.00 106.00 0.00
Daminoside N.D. 1 0.981 0.947 98.10 94.70 3.53
Diazanon N.D. 1 0.99 1.02 99.00 102.00 2.99
Dichlorvos N.D. 1 1.16 1.27 116.00 127.00 9.05
Dimethoate N.D. 1 0.983 1.22 98.30 122.00 21.52 Q
Ethoprophos N.D. 1 1.16 1.17 116.00 117.00 0.86
Etofenprox N.D. 1 0.946 1.04 94.60 104.00 9.47
Etoxazole N.D. 1 1.09 1.17 109.00 117.00 7.08
Fenoxycarb N.D. 1 1.13 1.24 113.00 124.00 9.28
Fenpyroximate N.D. 1 1.06 1.2 106.00 120.00 12.39
Fipronil N.D. 1 1.24 1.17 124.00 117.00 5.81
Flonicamid N.D. 1 1.17 1.28 117.00 128.00 8.98
Fludioxonil N.D. 1 1.01 0.943 101.00 94.30 6.86
Hexythiazox N.D. 1 1.07 1.08 107.00 108.00 0.93
Imazalil N.D. 1 0.984 1.19 98.40 119.00 18.95
Imidacloprid N.D. 1 1.2 1.22 120.00 122.00 1.65
Kresoxim-methyl N.D. 1 1.08 1.17 108.00 117.00 8.00
Malathion N.D. 1 1.15 1.22 115.00 122.00 5.91
Metalaxyl N.D. 1 0.996 1.12 99.60 112.00 11.72
Methiocarb N.D. 1 1.14 1.2 114.00 120.00 5.13
Methomyl N.D. 1 0.958 1.14 95.80 114.00 17.35
MGK-264 N.D. 1 0.856 1.08 85.60 108.00 23.14 Q
Myclobutanil N.D. 1 1.16 1.18 116.00 118.00 1.71
Naled (dibrom) N.D. 1 0.905 0.902 90.50 90.20 0.33
Oxamyl N.D. 1 1.01 1.14 101.00 114.00 12.09
Paclobutrazol N.D. 1 1.01 1.13 101.00 113.00 11.21
Parathion-methyl N.D. 1 0.945 0.914 94.50 91.40 3.34
Permethrins N.D. 1 0.909 0.988 90.90 98.80 8.33
Phosmet N.D. 1 1.08 1.23 108.00 123.00 12.99
Piperonyl butoxide N.D. 1 1.08 1.17 108.00 117.00 8.00
Prallethrin N.D. 1 1.05 1.02 105.00 102.00 2.90
Propiconazole N.D. 1 1.11 1.19 111.00 119.00 6.96
Propoxur N.D. 1 1.2 1.22 120.00 122.00 1.65
Pyrethrin N.D. 0.65 0.748 0.837 115.08 128.77 11.23
Pyridaben N.D. 1 0.98 1.12 98.00 112.00 13.33
SpinosynA N.D. 0.84 0.774 0.763 92.14 90.83 1.43
SpinosynD N.D. 0.16 0.194 0.198 121.25 123.75 2.04
Spiromesifen N.D. 1 0.799 0.949 79.90 94.90 17.16
Spirotetramat N.D. 1 1.22 1.26 122.00 126.00 3.23
Spiroxamine N.D. 1 1.21 1.22 121.00 122.00 0.82
Tebuconazole N.D. 1 1 1.15 100.00 115.00 13.95
Thiacloprid N.D. 1 1.19 1.17 119.00 117.00 1.69
Thiamethoxam N.D. 1 1.08 1.24 108.00 124.00 13.79
Trifloxystrobin N.D. 1 1.01 1.13 101.00 113.00 11.21

N.D. = Not Detected

I = indicates that an amount of an interfering compound greater than the methods limit of detection was detected in the method blank sample. May indicate contamination of analytical system or consumables.

Q = indicates that the relative percent diference of two identicly prepared Matrix Spike samples for a target analyte was greater than 20%

R = indicates compound recovery of matrix spike was outside the methods acceptable limits. (70-130%) Low recovery could indicate there is actually more compound present than detected; while high recoveries should be scrutinized for possible fails as more compound may be detected than is actually residual on the sample.

Sample was sampled and tested in accordance with the Safety Compliance Facility Information published on September 28, 2018.

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

MEH QM Iron laboratories MEH QM

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 4 of 6

IRON Laboratories

Residual Solvents Analysis by
Mass Spectrometer

Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: SOP FE-44-OR3

Test Conditions

Prepsheet ID#: MIHS190116a
Scale: XS205-MI2
Temp: 20 °C
Baro PE: 990 hPa
Analyst: MEH
Technician: JRT

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019

Sample #114847
Compound MRL (µg/g) LOD (µg/g) Status (µg/g)   Compound MRL (µg/g) LOD (µg/g) Status (µg/g)
1,2-Dichloroethane 2 1 Pass/<LOD 1,2-Dimethoxyethane 100 5 Pass/<LOD
1,4-dioxane 380 200 Pass/<LOD 1-Butanol 5,000 100 Pass/<LOD
1-Pentanol 5,000 100 Pass/<LOD 1-Propanol 5,000 100 Pass/<LOD
2,2-Dimethylpropane (Neopentane) 5,000 100 Pass/<LOD 2,2-Dimethylbutane (Hexanes) 290 100 Pass/<LOD
2,3-Dimethylbutane (Hexanes) 290 100 Pass/<LOD 2-Butanol 5,000 100 Pass/<LOD
2-Butanone (MEK) 5,000 50 Pass/<LOD 2-Ethoxyethanol 160 40 Pass/<LOD
2-Methylbutane (Isopentane) 5,000 50 Pass/<LOD 2-Methylpentane (Hexanes) 290 50 Pass/<LOD
2-Methylpropane (Isobutane) 5,000 50 Pass/<LOD 2-propanol (Isopropyl Alcohol) 5,000 50 Pass/<LOD
2-Propanone (Acetone) 5,000 50 Pass/<LOD 3-Methylpentane (Hexanes) 290 50 Pass/<LOD
Acetonitrile 410 100 Pass/<LOD Benzene 2 1 Pass/<LOD
Butane 5,000 50 Pass/<LOD Chloroform 1 100 Pass/<LOD
Cumene 70 35 Pass/<LOD Cyclohexane 3,880 1,000 Pass/<LOD
Dichloromethane 600 150 Pass/<LOD Dimethylsulfoxide (DMSO) 5,000 500 Pass/<LOD
Ethanol 5,000 500 Pass/<LOD Ethyl acetate 5,000 50 Pass/<LOD
Ethyl ether 5,000 500 Pass/<LOD Ethylene glycol 620 310 Pass/<LOD
Ethylene oxide 50 50 Pass/<LOD Heptane 5,000 50 Pass/<LOD
Hexane 290 50 Pass/<LOD Isopropyl acetate 5,000 50 Pass/<LOD
Methanol 3,000 500 Pass/<LOD Naptha 400 100 Pass/<LOD
N,N-Dimethylacetamide 1,090 273 Pass/<LOD N,N-Dimethylformamide (DMF) 880 500 Pass/<LOD
Pentane 5,000 50 Pass/<LOD Petroleum Ether 400 100 Pass/<LOD
Propane 5,000 50 Pass/<LOD Pyridine 200 10 Pass/<LOD
Sulfolane 200 160 Pass/<LOD Tetrahydrofuran (THF) 720 200 Pass/<LOD
Toluene 890 50 Pass/<LOD Trichloroethylene 25 6 Pass/<LOD
Xylenes* 2,170 50 Pass/<LOD

* Xylenes are reported as the sum of o-xylene, m-xylene, p-xylene, and ethylbenzene
MRL - Maximum Residue Limit; LOD - Limit of Detection

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

MEH QM Iron laboratories MEH QM

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 5 of 6

IRON Laboratories

Residual Solvents QC Report

Test Certificate #: 114847-001
Client Name, Sample Details

Casey Yosin
Clarkston, MI 48346
Sample: DT1 2/4/2019
Type: Concentrate
Method: SOP FE-44-OR3

Test Conditions

Prepsheet ID#: MIHS190116a
Scale: XS205-MI2
Temp: 20 °C
Baro PE: 990 hPa
Analyst: MEH
Technician: JRT

Sample ID#: 114847

Harvest/Process Date: 02/05/2019
Serving Size (g): 1
Date Received: 02/05/2019

Sample #114847
Target Compound Name Method Blank (μg/g) QC Spike (μg/g) Matrix Spike (μg/g) Matrix Spike Duplicate (μg/g) MS Recovery (%) MSD Recovery (%) Relative Percent Difference (%) QC Flag
n-Propane N.D. 250 241 252 96.40 100.80 4.46
Isobutane N.D. 250 239 250 95.60 100.00 4.50
Methanol N.D. 250 227 237 90.80 94.80 4.31
n-Butane N.D. 250 249 264 99.60 105.60 5.85
2,2-Dimethylpropane N.D. 0 0 0 nan nan
Ethanol N.D. 250 264 252 105.60 100.80 4.65
Isopentane N.D. 250 250 250 100.00 100.00 0.00
Acetonitrile N.D. 250 230 224 92.00 89.60 2.64
Diethyl ether N.D. 250 254 252 101.60 100.80 0.79
2-propanone N.D. 250 237 268 94.80 107.20 12.28
2-propanol N.D. 250 255 250 102.00 100.00 1.98
n-Pentane N.D. 250 252 260 100.80 104.00 3.13
2,2-Dimethylbutane N.D. 250 248 245 99.20 98.00 1.22
2,3-Dimethylbutane N.D. 250 251 258 100.40 103.20 2.75
Methylene chloride N.D. 250 251 246 100.40 98.40 2.01
2-Methylpentane N.D. 250 246 250 98.40 100.00 1.61
3-Methylpentane N.D. 250 254 250 101.60 100.00 1.59
2-Butanol N.D. 250 256 246 102.40 98.40 3.98
n-Hexane N.D. 250 250 255 100.00 102.00 1.98
Ethyl acetate N.D. 250 246 236 98.40 94.40 4.15
Tetrahydrofuran N.D. 250 259 252 103.60 100.80 2.74
Isopropyl acetate N.D. 250 261 254 104.40 101.60 2.72
Benzene N.D. 250 246 237 98.40 94.80 3.73
Cyclohexane N.D. 250 256 254 102.40 101.60 0.78
Ethylene glycol N.D. 250 272 269 108.80 107.60 1.11
Heptane N.D. 250 249 248 99.60 99.20 0.40
2-Ethoxyethanol N.D. 250 253 236 101.20 94.40 6.95
1,4-Dioxane N.D. 250 249 238 99.60 95.20 4.52
Pyridine N.D. 250 246 240 98.40 96.00 2.47
Toluene N.D. 250 248 239 99.20 95.60 3.70
Chlorobenzene N.D. 0 0 0 nan nan
Ethylbenzene N.D. 250 248 236 99.20 94.40 4.96
m-Xylene/p-Xylene N.D. 500 487 472 97.40 94.40 3.13
o-Xylene N.D. 250 248 236 99.20 94.40 4.96
Cumene N.D. 250 243 231 97.20 92.40 5.06
Ethylene oxide N.D. 0 0 0 nan nan

I = indicates that an amount of an interfering compound greater than the methods limit of detection was detected in the method blank sample. May indicate contamination of analytical system or consumables.

Q = indicates that the relative percent diference of two identicly prepared Matrix Spike samples for a target analyte was greater than 20%

R = indicates compound recovery of matrix spike was outside the methods acceptable limits. (70-130%) Low recovery could indicate there is actually more compound present than detected; while high recoveries should be scrutinized for possible fails as more compound may be detected than is actually residual on the sample.

N.D. = Not Detected

This certificate shall not be reproduced except in full, without written approval of Iron Laboratories, LLC.

MEH QM Iron laboratories MEH QM

Tested by Iron Laboratories Michigan, 1825 E. West Maple Walled Lake, MI 48390

Page 6 of 6