Reference Methods

Recommended Terminology and Units for Parameters Used in Lab Reports (PDF)

Method 1.0 Sample Size and Splitting Samples Reference Method (PDF)

Acid Detergent Fiber Reference Method (PDF)

Dry Matter Reference Method (PDF)

Standardization of Hydrocloric Acid (PDF) 
Although acid standardization is not a reference method itself, it is used in the reference method for ADF

Guidelines for Grinding and Particle Size (PDF)