Ankom Delta, Operator'S Manual

Page: 16 / 37

Operator’s Manual
pg. 16
Rev 4/24/20
10. Press START on the Keypad. Solution will flow into the vessel through the acid detergent chemical tube
and valve.
NOTE:
Once the analysis begins, digestions and rinses occur automatically, with the
analyzer Display providing information about the process time remaining, the
temperature, and the pressure. Pressing STOP on the Keypad at any time during
the analysis ends the operation and opens the drain to exhaust the solution.
11.
When the “Extraction Done” message appears on the Display, the analyzer operation is complete. Open
the Vessel Lid, remove the bags and place them in an appropriately sized beaker.
12. With your hands, gently press out excess water from the bags into the
beaker and pour off the water from the beaker.
13. With the bags in the beaker, add enough acetone to cover them. Let the bags
soak in acetone for 3 – 5 minutes. Then pour off the acetone.
14. With your hands, gently press out excess acetone from the bags into the
beaker and pour off the acetone from the beaker.
15. Remove the bags from the beaker and place them on a wire screen to air-dry.
Hazardous Materials
–
Do NOT place bags in an oven until all acetone has
evaporated.
16. Place air-dried bags in the oven and heat at 102°C ± 2° for 2 – 4 hours (depending on the oven).
IMPORTANT:
When running a lignin procedure or a sequential (NDF/ADF or
NDF/ADF/Lignin) with F57 Filter Bags it is important not to dry the bags
overnight after the NDF or ADF procedure. A drying timeframe of 2-4 hours
at 100°C to 105°C is sufficient to thoroughly dry the bags after each procedure.
Extended drying times or too high a temperature can compromise the bag’s
filtration media. In addition, be sure to check the water of the fourth rinse
during the ADF procedure to ensure all the sulfuric acid has been removed
from the bags. If litmus paper shows the presence of acid during the fourth hot
water rinse, repeat until neutral.
17. Remove the bags from the oven and place them in a Desiccant Pouch.
IMPORTANT:
Do NOT use conventional countertop or cabinet desiccators for this analysis.
18. Allow the bags to cool to room temperature. This should take about 10 – 15 minutes.
19. Remove one filter bag from the Desiccant Pouch. Press the pouch to remove ambient air and zip it tight.
20. Re-weigh the filter bag (W
3
) immediately.
21. Repeat steps 19 and 20 for each filter bag in the Desiccant Pouch.