Betekenis van:
silica gel

Voorbeeldzinnen

1. Extraction from milk using silica gel columns
2. Not more than 6,0 % (40 oC, over silica gel, 15h)
3. Not more than 0,25 % (over silica gel, 4h)
4. Not more than 8,0 % (precipitated silica and silica gel, 105 oC, 2h)
5. Desiccator, provided with freshly dried silica gel with hygrometric indicator or another effective desiccant.
6. Not more than 0,4 % after drying under reduced pressure on silica gel for 3 hours
7. Not more than 3 % after drying for four hours over silica gel
8. Allow to distribute uniformly on the silica gel for approximately 5 min.
9. Not more than 0,25 % after drying over silica gel for four hours
10. Not more than 0,4 % after drying under reduced pressure on silica gel for 3 hours
11. Ordinary desiccators, suitable for accommodating the dishes and containing a desiccant such as indicator silica gel.
12. Silicon dioxide is an amorphous substance, which is produced synthetically by either a vapour-phase hydrolysis process, yielding fumed silica, or by a wet process, yielding precipitated silica, silica gel, or hydrous silica.
13. Definition Silicon dioxide is an amorphous substance, which is produced synthetically by either a vapour-phase hydrolysis process, yielding fumed silica, or by a wet process, yielding precipitated silica, silica gel, or hydrous silica.
14. Examine by thin layer chromatography using a plate coated with an approximately 0,2 mm layer of chromatographic silica gel.
15. Extrelut column, of capacity 1 ml to 3 ml, filled with silica gel, needed for the extraction of milk fat according to 7.1.3 only.