Ankom TDF, Руководство оператора

Страница: 28 / 78

Operator’s Manual
pg. 28 Rev A 4/30/12
14. Rinse the SDF filter bags with acetone.
After the instrument has completed an SDF process the SDF residue that has been collected in the SDF bag must be
manually rinsed with acetone. It is recommended that you use an ANKOM TDF51 Rinse Stand for rinsing filter bags with
acetone.
To rinse the SDF filter bags with acetone using the ANKOM TDF51 Rinse Stand, follow the steps below.
14.1 Remove the SDF bags from the instrument.
14.2 Place the bags on the Rinse Stand by sliding the back part of each bag under the pinch mechanism. Keep the top
of the bag open.
14.3 Using a wash bottle, squirt acetone into each bag, making sure that all residue is rinsed down into the filter.
14.4 Repeat step 14.3 so that each bag gets rinsed a total of two times.
14.5 Allow acetone to evaporate from the bags.
Hazardous Materials –
Do NOT heat seal or place bags in an oven until all
acetone has evaporated.
14.6 Seal each bag just above the filter to keep all residue contained to the filter area while handling the bags.
Seal each bag as close to the filter as possible. This will allow you to trim the
maximum amount of polypropylene from the bag before determining the protein
content.
14.7 Place each bag in the Drying Rack.
15. Dry the IDF and SDF filter bags.
15.1 Make sure your oven is 105°C at the location where the bags are placed.
15.2 Place the Drying Rack with the filter bags in the oven and dry to constant weight (about 90 minutes).
15.3 When dry, remove all IDF and SDF filter bags from the oven and place them in separate desiccant pouches.
16. Weigh the IDF residue.
16.1 Remove only one IDF filter bag from the desiccant pouch at a time.
16.2 Roll or fold the bag, place it in a tared Bag Weigh Holder, and place the Bag Weigh Holder in the center of a
scale.
16.3 Record the weight of the filter bag.
16.4 Repeat steps 16.1 – 16.3 for each IDF filter bag used in the fiber analysis.
17. Weigh the SDF residue.
17.1 Remove only one SDF filter bag from the desiccant pouch at a time.
17.2 Roll or fold the bag, place it in a tared Bag Weigh Holder, and place the Bag Weigh Holder in the center of a
scale.
17.3 Record the weight of the filter bag.
17.4 Repeat steps 17.1 – 17.3 for each SDF filter bag used in the fiber analysis.
18. Determine the Protein content within the IDF and SDF residue.
See the “Protein Determination” section of this manual for recommended procedures.
19. Determine the Ash content within the IDF and SDF residue.
See the “Ash Determination” section of this manual for recommended procedures.