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North American Maple Syrup Producers Manual, 3rd Ed.

Since 1958 the North American Maple Syrup Producers Manual has served as a basic reference source for the production of pure maple products. This 2022 edition provides up-to-date, science-based information and recommendations relating to all aspects of the industry. The guidelines presented will help users ranging from the hobby and beginning producer level to those well-established in the industry. In addition, the information herein will benefit foresters, land managers, Extension and outreach personnel, and others aiming to provide assistance to those in the maple industry. Numerous photographs, tables, a glossary and hyperlinks to selected source materials are included.

This publication is also available in print, at

Filtering Maple Syrup

Methods, tips, and hints to properly filter maple syrup to achieve clarity.

Gravity Filtering: Simple tools and techniques for filtering small batches of maple syrup

Many producers use a filter press, which uses a pressure pump to push the syrup through a series of metal plates and frames, separated by single-use pieces of filter paper which capture the particles and result in crystal-clear syrup. For smaller producers, however, using paper and cloth filters and letting gravity pull the syrup through is an acceptable and far less expensive option.

Ask Proctor

Filtering syrup in small batches is a huge pain. Any advice on how to make it easier?

Effects of Various Filters on Sap Quality and Characteristics

Sap filters can remove residue or debris, which may inadvertently enter the sap through the collection system or during storage. Moreover, filtering may improve the storage potential of maple sap, improve sap quality especially during mid- to late-season and help in keeping the evaporator system clean.

Recommendations for Proper Plate Filter Press Operation

New filter presses do not always include a complete set of instructions and the proper procedures in using a filter press are not always apparent. This publication is meant to provide guidelines for the proper use of plate filter presses.