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To properly prepare the IDF & SDF bags for Kjeldahl and Ashing procedures, refer to Section 17 of the TDF Operator’s Manual (Ash Determination) or view the following video: Kjeldahl & Ashing Bag Preparation .
Refer to the TDF Operator's Manual, sections "IDF/SDF Analysis" and "TDF Analysis."
In the past, we recommended customers to de-fat in XT4 bags. When the defatting process was completed, the XT4 bags were cut up and placed in the IDF bag. If the XT4 bag is cut into very small pieces, the sharp edges of the cut pieces can penetrate...
We have found that it is best to slowly ramp up the digestion temperatures so that foaming in the digestion tubes is minimized. As a result, we would suggest the following times and temperatures: 15 minutes at 150°C, followed by 15 minutes at 250°C...
IDF filter bags have a shorter length of clear polypropylene material and a taller filter at the bottom of the bag. SDF filter bags have a longer length of clear polypropylene material and a shorter, wider filter at the bottom of the bag.