Retsch MM 400 - Opening Aid

Operating the Device
35
Dry grinding
Recommended number of grinding balls
Grinding jar
size
Sample volume
Max. feed size
Ø
15 mm
Ø
20 mm
Ø
25 mm
1.5 ml
0.2–0.5 ml
1 mm
-
-
-
5 ml
0.5–2 ml
2 mm
-
-
-
10 ml
2–4 ml
4 mm
-
-
-
25 ml
4–10 ml
6 mm
1 - 2
-
-
35 ml
6-15 ml
6 mm
2 - 3
1
-
50 ml
8-20 ml
8 mm
3 - 4
1
1
The MM 400 allows the use of 1.5 ml / 2 ml / 5 ml reaction tubes.
Dry grinding
Recommended number of grinding
balls
Stainless steel or Zirconium oxide
Cell disruption of
biological cells
Grinding jar
size
Sample
volume
Max. feed
size
Ø
4 mm
Ø
5 mm
Ø
7 mm
Ø
10 mm
Glass beads (0.1-0.25
mm/0.25-0.5 mm/0.75-
1 mm/1-1.5 mm)
Zirconium oxide grinding
balls (< 3 mm)
1.5 ml
0.2–0.5 ml
<1 mm
2-4
-
-
-
~ 0.75 ml
2 ml
0.3-0.75 ml
<2 mm
3-6
2-4
1-2
-
~ 1 ml
5 ml
0.5–2 ml
<2 mm
12
-
-
-
~ 2.5 ml
6.4 Opening aid
Two opening aids are included in the scope of delivery of the MM 400.
Use the opening aids to close the grinding jars to ensure that they are firmly closed.
Place the opening aids on the two ends of a grinding jar and turn clockwise to close the grinding
jar.
The opening aids can also be used in order to open the grinding jars more easily.