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Thread: DE with Gravity Filters?

  1. #1
    Join Date
    Mar 2008
    Canaan NH

    Default DE with Gravity Filters?

    Is anybody out there using DE with their gravity filters, or is it strictly used in filter presses? The reason I'm asking is that I occasionally notice some slight cloudiness in my syrup and am wondering if DE could help. I use 4 pre-filters and one felt on my 4-gallon canning unit. I often need to lighten my syrup, by 1-2 brix before bottling. I use sweet from the flue pan for this, feeding it through the filters. Could this be loosening up some of the niter in the felt and carrying it through into the syrup? Would DE help prevent this? For what it's worth, I bring my syrup to 190F (direct propane heat) in the canner before bottling.
    Boulder Trail Sugaring
    150 Taps on Vacuum
    Homemade 20"x40" Hybrid Pan - 15 gph
    Homemade Steamaway - 10 gph
    Waterguys single-post RO

  2. #2
    Join Date
    Apr 2013
    Speyside, Ontario


    I have not been successful with DE using gravity filters, or even with my vacuum filter.

    I would be very careful and only try a small batch to test out if it works.

    My DE seems to go right through the filter and made the syrup even cloudier.
    2015 - 8 buckets, 332L sap, 8.5L syrup - Barrel evaporator, 2 steam pans
    2016 - 8 buckets, 432L sap
    2017 - 10 bags, 470L sap, 9L syrup
    2018 - 20 bags, 1050L sap, 17.6L syrup
    2019 - 20 bags, 970L sap, 22.2L syrup
    2020 - 17 bags, 813L sap, 17L syrup

  3. #3
    Join Date
    Jan 2006
    Oneida NY


    If the Maple grade DE goes thru your filter you need a new filter. Do you use a wool or orlon syrup filter? If yes, the fibers must have gotten broken, possibly by wringing them filter out. That's a no no. If any other filter such as a cheese cloth, a clean cotton tee shirt, a coffee filter or a maple pre-filter non of those will catch maple grade DE. Be certain to get the DE from a maple dealer or another maple producer, DE for maple is unique to maple. Don't use just any DE.
    Dave Klish about 400 taps, down from much more. Retired from collecting and boiling in 2021. Mostly because of a bad hip.
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    website: www.cnymaple.com

  4. #4
    Join Date
    Jan 2014

    Default I am curious

    So does that mean that you can use DE with a gravity filter?

  5. #5
    Join Date
    Feb 2006
    Catskill Mountains


    Yes you can. There are threads on this site from awhile ago that detail how I did it before I got a press.

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