Laboratory Proficiency Program Series

AOCS offers more than 40 different series covering a wide array of testing skills and instrumentation. Participation counts towards ISO 17025 requirements. Successful completion of yearly series makes you eligible to apply for Approved Chemist status.

The AOCS Laboratory Proficiency Program (LPP), is the world's most extensive and respected collaborative proficiency testing program for oil- and fat-related commodities, oilseeds, oilseed meals, and edible fats. More than 500 chemists participate to verify and demonstrate their lab's quality control.

Participants use AOCS or similar methods for sample analysis and then compare their results with a large cross-section of other laboratories using the same methods and samples.

New to the Laboratory Proficiency Program (LPP)– Please enroll through the online store.  

Need to renew your LPP participation– A proforma renewal invoice is mailed to each analyst in mid-March for their current series. Please renew by paying this proforma invoice online by logging in to your AOCS account and navigating to the "My Account" page. If you need to make any changes to your proforma, or have any questions, please contact Dawn Shepard at dawns@aocs.org or by phone at +1-217-693-4810.

2016-2017 Laboratory Proficiency Program Award Winners (.pdf)

Available Series

Sample(s) in this series
Corn Meal

Determination
Aflatoxins B1, B2, G1, and G2     

Test Method
User-Specified Method

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Sample(s) in this series
Cottonseed Meal

Determination
Aflatoxins B1, B2, G1, and G2

Test Method
User-Specified Method 

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Sample(s) in this series
Peanut Butter

Determination
Aflatoxins B1, B2, G1, and G2

Test Method
User-Specified Method 

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Sample(s) in this series
Peanut Paste

Determination
Aflatoxins B1, B2, G1, and G2

Test Method
User-Specified Method

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Sample(s) in this series
Pistachio and Almond

Determination
Aflatoxins B1, B2, G1, and G2

Test Method
User-Specified Method 

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Sample(s) in this series
Corn Meal

Determination
Total Aflatoxins 

Test Method
Corn Meal Test Kit

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Sample(s) in this series
Peanut Paste

Determination
Total Aflatoxins

Test Method
Peanut Paste Meal Test Kit

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Sample(s) in this series
Dried Meats
Dried Egg
Cheese Powder

Determination
Cholesterol

Test Method
AOAC 994.10

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Sample(s) in this series
Cottonseed

Determination
Free Fatty Acids
Foreign Matter
Moisture
Nitrogen
Oil

Test Method
Aa 6-38
Aa 2-38
Aa 3-38
Aa 5-91 or Ba 4e-93
Aa 4-38

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Sample(s) in this series
Cottonseed Oil

Determination
Bleached Color
Free Fatty Acids
Moisture and Volatiles
Refined Color
Soap

Test Method
Cc 8a-52
Cc 5a-40
Ca 2b-38
Ca 13b-45
Cc 17-95

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Sample(s) in this series
Corn Meal

Determination
Ash* 
Crude Fat
Crude Fiber
Moisture
Protein

Test Method
User Specified
AOAC 920.39, 945.16, or 2003.06
AOAC 978.10 or Ba 6a-05 (filterbag)
NFTA 2.2.2.5 (105 C/3) hr
AOAC 990.03 (Combustion) or 2001.11 (Kjeldahl

*Optional method

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Sample(s) in this series
Edible Fats

Determination
AOCS Color
Capillary Melting Point*
Free Fatty Acids
Iodine Value
Lovibond Color*
Mettler Dropping Point
α-Monoglycerides
OSI*
Solid Fat Content

Test Method
Cc 13b-45
Cc 1-25
Ca 5a-40
Cd 1d-92
Cc 13e-92
Cc 18-80
User-Specified
Cd 12b-92
Cd 16-81 or Cd 16b-93

*Optional method

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Sample(s) in this series
Animal Feed

Determination
Ingredient Identification by Microscope

Test Method
AAFCO Terminology

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Sample(s) in this series
Fish Meal

Determination
Acid Value
Ash
Crude Protein
Moisture
Nitrogen 
Oil (Petroleum Ether)
Pepsin Digestibility

Test Method
Cd 3d-63
Ba 5a-49
Ba 4d-90 or Ba 4e-93 (Dumas
Ba 2a-38
AOAC 920.03
Ba 3-38
AOAC 971.09


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Sample(s) in this series
Corn Meal

Determination
B1, B2, B3, and Total

Test Method
User-Specified Method

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Sample(s) in this series
Palm Oil
Soybean Oil
Vegetable Shortening
Cottonseed Oil
Canola Oil
Coconut Oil
Sunflower Oil
Olive Oil

Determination
Fatty Acid Composition
Iodine Value (calculated)*

Test Method
Ce 1a-13
Cd 1c-85

*Optional method

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Sample(s) in this series
Modified Soybean Meal
Non-Modified Soybean Meal

Determination
% Presence

Test Method
User-Specified Method

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Sample(s) in this series
Marine Oil

Determination
Acid Value
p-Anisidine Value
Fatty Acid Composition
Peroxide Value

Test Method
Cd 3d-63
Cd 18-90
Ce 1i-07 or GOED Monograph
Cd 8b-90

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Sample(s) in this series
Marine Oil

Determination
p-Anisidine Value
Free Fatty Acids
Gardner Color*
Insoluble Impurities
Iodine Value
Lovibond Color*
Moisture
Peroxide Value

Test Method
Cd 18-90
Ca 5a-40
Td 1a-64
Ca 3a-46
Cd 1d-92
Cc 13b-45
Ca 2b-38
Cd 8b-90

* Optional method

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Sample(s) in this series
Marine Oil

Determination
Fatty Acid Composition

Test Method
Ce 1b-89 or Ce 1i-07

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Sample(s) in this series
Sunflower
Safflower
Canola

Determination
Chlorophyll*
Foreign Matter
Free Fatty Acids
Glucosinolates*
Moisture
Nitrogen
Oil, Clean Seed Basis

Test Method
Ak 2-92
Ai 1-80
Ac 5-41
Ak 1-92
Ai 2-75
Ai 4-91 or Ba 4e-93
Am 2-93

*Optional method

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Sample(s) in this series
Ground Almonds

Determination
Moisture

Test Method
User-Specified

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Sample(s) in this series
Crude Coconut Oil
Crude Safflower Oil
Crude Sunflower Oil
Palm Oil

Determination
AOCS Color
Free Fatty Acids
Iodine Value
Mass/Unit Volume
Saponification Value

Test Method
Cc 13b-45
Ca 5a-40
Cd 1d-92
Cc 10c-95
Cd 3-25

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Sample(s) in this series
Dry Product
Liquid Product

Determination
Fatty Acid Composition
Minerals*
Total Fat
Total Protein
Vitamin A*
Vitamin D*
Vitamin E*

Test Method
Ce 1j-07
AOAC 985.35 or 984.27
User-Specified
User-Specified
AOAC 992.04 or 992.06
AOAC 992.26
AOAC 992.03

*Optional methods

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Sample(s) in this series
Oilseed Meals

Determination
Crude Fiber
Moisture
Nitrogen
Oil (Petroleum Ether)

Test Method
Ba 6-84
Ba 2a-38
Ba 4d-90 or Ba 4e-93
Ba 3-38

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Sample(s) in this series
Olive Oil

PART A
Determination
Delta K (UV Extinction)

Free Fatty Acids
Peroxide Value


Test Method
COI/T.20/Doc.19-Rev3 or
AOCS Ch 5-91
Ca 5a-40
Cd 8b-90

PART B
Determination
Diacylglycerols*
Fatty Acids
Composition


Pyropheophytin*
Triglycerides (ECN 42) 


Test Method
ISO 29822
COI/T.20/Doc. 17,
COI/T.24-2001,
ISO 5508,
AOCS Ch 2-91 or AOCS Ce 2-66
ISO 29841
COI/T.20/Doc. 20-2010
or AOCS Ch 1-91

PART C
Determination
Biophenols*
Contents of 2-Glycerol
Monopalmitate*
Sterenes*
Sterols

Stigmastadienes

Waxes


Test Method
COI/T.20/Doc. 20-2010

COI/T.20/Doc. 23-2006
COI/T.20/Doc. 16-2001
COI/T.20/Doc.30-2013
ISO 12228-2 1999, or AOCS Ch 6-91
COI/T.20/Doc. 11-2001
or AOCS Cd 26-96
COI/T.20/Doc. 18-2003
or AOCS Ch 8-02

*Optional methods

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Sample(s) in this series
Olive Oil

Determination
Extra Virgin, Virgin & Lampante

Test Method
International Olive Council guideline
COI/T.20/Doc. No 15/Rev.7;February 2015

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Sample(s) in this series
Palm Oil

Determination
Cloud Point
Free Fatty Acids
Iodine Value
Lovibond Color
Slip Melting Point*
Solid Fat Content

Test Method
P4.3 PORIM
P2.5 PORIM
Cd 1d-92
P4.1 PORIM
P4.2 PORIM
Cd 16b-93 or Cd 16-81

*Optional methods

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Sample(s) in this series
Peanuts

Determination
Foreign Matter
Free Fatty Acids
Moisture
Nitrogen
Oil

Test Method
Ab 1-49
Ab 5-49
Ab 2-49
Ab 4-91 or Ba 4e-93
Ab 3-49

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Sample(s) in this series
Soybean Oil

Determination
Phosphorus

Test Method
Ca 12-55

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Sample(s) in this series
Edible Fats

Determination
Solid Fat Content

Test Method
Cd 16b-93

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Sample(s) in this series
Soybeans

Determination
Crude Fiber
Free Fatty Acids*
Moisture
Nitrogen
Oil

Test Method
Ba 6-84
Ac 5-41
Ac 2-41
Ac 4-91 or Ba 4e-93
Ac 3-44

*Optional method

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Sample(s) in this series
Soybean Oil

Determination
Free Fatty Acids
Lovibond Color*
Neutral Oil

Test Method
Ca 5a-40
Cc 13e-92
Ca 9f-57

*Optional method

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Sample(s) in this series
Plant Oils

Determination
p-Anisidine Value
Fatty Acid Composition
Free Fatty Acids
Iodine Value
Moisture
Peroxide Value

Test Method
Cd 18-90
Ce 1i-07
Ca 5a-40
Cd 1d-92
Ca 2b-38
Cd 8b-90

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Sample(s) in this series
Tallow and Grease

Determination
Free Fatty Acids
Insoluble Impurities
Moisture
Refined and Bleached Color
Titer
Unsaponifiable Matter

Test Method
Ca 5a-40
Ca 3a-46
Ca 2c-25 or Ca 2b-38
Cc 8d-55
Cc 12-59
Ca 6a-40

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Sample(s) in this series
Soybean Oil

Determination
Copper, Iron, Nickel

Test Method
Ca 18 -79

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Sample(s) in this series
Soybean Oil

Determination
Total trans Fatty Acids by GC
Total trans Fatty Acids by IR

Test Method
Ce 1h-05
Cd 14-95

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Sample(s) in this series
Unground Soybean Meal

Determination
Ash*
Crude Fiber
Moisture
Nitrogen
Oil (Petetroleum Ether)
Urease Activity

Test Method
Ba 5a-49
Ba 6-84
Ba 2a-38
Ba 4d-90 or Ba 4e-93
Ba 3-38
Ba 9-58

*Optional method

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Sample(s) in this series
Soybean Oil

Determination
Color
Lovibond Red Color*

Test Method
Cc 13b-45
Cc 13e-92

*Optional method

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