Main -> Sample preparation -> Size reduction -> Ball grinders
Mixer Mills, RETSCH
MM 200 / MM 400 / CryoMill mixer mills

Application:
The swing mills are all-round talents in the laboratory. They have been developed expecially for grinding, homogenizing and mixing of small sample amounts within seconds. Furthermore, they are perfectly suitable for disruption of biological cells as well as for DNA/RNA extraction. For the MM 400, dust-proof and closed milling containers with screw cap are available, which also enable wet millings and cryogenic grinding.

The CryoMill is suitable for cryogenic grinding of materials that cannot be milled at room temperature, or the composition of which would change when milled at room temperature. The integrated conditioning system constantly cools the grinding jar with liquid nitrogen before and during milling. In this way, the sample is embrittled, slightly volatile components are retained. As the CryoMill can also be operated without cooling, it is fit for universal use.

Features of MM 200 / MM 400:

  • Reproducible, efficient grinding, mixing in homogenizing within seconds
  • Impact and friction for powerful grinding, up to 20 samples in one go
  • For dry, wet, and cryogenic grinding (MM 400)
  • Grinding jar with screw cap for loss-free grinding (MM 400)
  • 9 Standard Operating Procedures (SOP) can be stored
  • Extensive range of accessories, e.g. grinding jars and ball grinders in various sizes and materials, adapters

Features of CryoMill:

  • Impact and friction at 30 Hz for powerful grinding
  • Closed LN2 system (Autofill) protects the user from direct contact with liquid nitrogen
  • Grinding jar with screw cap for loss-free grinding (MM 400)
  • Clearly structured user interface, 9 SOPs storable
  • Extensive range of accessories, e.g. LN2 supply, grinding jars and ball grinders in various sizes and materials, adapters

 

Technical data:

MM 200

MM 400

CryoMill

Input grain size:

up to 6 mm

up to 8 mm

up to 8 mm

Final grain size:

approx. 10 µm

approx. 5 µm

approx. 5 μm

Discharge:

up to 2 × 10 ml

max. 2 × 20 ml

max. 20 ml

Digital preselection of

3 – 25 Hz

3 – 30 Hz

3 – 30 Hz

vibrational frequency:

(180 – 1500 min-1)

(180 – 1800 min-1)

(180 – 1800 min-1)

Dry / Wet /
Cryogenic grinding:

yes / no / no

yes / yes / with Kryokit
for grinding bowl precooling

yes / yes / yes

External dimensions (W×H×D):

371 × 266 × 461 mm

371 × 266 × 461 mm

385 × 370 × 570 mm

Weight (net):

approx. 25 kg

approx. 26 kg

40 kg

Power supply:

100 – 240 V, 50/60 Hz

100 – 240 V, 50/60 Hz

100 – 240 V, 50/60 Hz


ArticleOrder No.
(1)Mixer mill MM 20010 29 20200
(2)Mixer mill MM 40010 29 20400
(3)Mixer mill CryoMill10 29 20800



Grinding jars and grinding balls please order separately.
Accessories for cryogenic grinding with MM 400 on request.
CryoMill: Autofill please order separately.

4 Grinding jars MM 200
MaterialVol.
ml		Order No.MaterialVol.
ml		Order No.
Hardened steel2510 29 22052Zirconium oxide1010 29 22194
Stainless steel 1.510 29 22057Zirconium oxide2510 29 22195
Stainless steel 510 29 22059Agate 510 29 22113
Stainless steel1010 29 22061Agate1010 29 22008
Stainless steel2510 29 22119PTFE1010 29 22184
Tungsten carbide 510 29 22115PTFE2510 29 22151
Tungsten carbide1010 29 22009


5 Grinding jars MM 400, screw top design
MaterialVol.
ml		Order No.MaterialVol.
ml		Order No.
Hardened steel2553 29 20237Tungsten carbide2553 29 20217
Rust-proof steel 1.553 29 20230Agate 553 29 20232
Rust-proof steel 553 29 20231Agate1053 29 20233
Rust-proof steel1053 29 20236Zircon oxide1053 29 20234
Rust-proof steel2553 29 20213Zircon oxide2553 29 20201
Rust-proof steel3553 29 20214Zircon oxide3553 29 20215
Rust-proof steel5053 29 20216PTFE2510 29 22238
Tungsten carbide1053 29 20235PTFE3510 29 22244


Grinding jars CryoMill, screw top design
MaterialVol.
ml		Order No.MaterialVol.
ml		Order No.
Hardened steel 510 29 22300Rust-proof steel1010 29 22331
Hardened steel2510 29 22297Rust-proof steel2510 29 22289
Hardened steel3510 29 22298Rust-proof steel3510 29 22288
Hardened steel5010 29 22299Rust-proof steel5010 29 22284
Rust-proof steel 510 29 22290PTFE2510 29 22309



* for use with adapter 10 29 26272

Accessories for CryoMill
ArticleOrder No.
Autofill with LN2 container and safety valve, 50 litres10 29 22482
Connection tube, incl. safety valve (for LN2 supply provided by customer)10 29 27101
Adapter for use of 2/4 grinding jars, 5 ml10 29 26272
Adapter for use of 2/4/6 reaction vials, 2 ml10 29 26277
Safe-lock reaction vials 2 ml, 1000 pcs.10 29 27491


Grinding balls MM 200 / MM 400 / CryoMill
MaterialBall Ø mm
5710
Order No.Order No.Order No.
Hardened steel53 29 4608453 29 4608553 29 36859
Stainless steel53 29 4608753 29 4608853 29 36863
Tungsten carbide53 29 4609053 29 4609153 29 36871
Agate53 29 4609453 29 4609553 29 36867
PTFE10 29 26045


Grinding balls MM 200 / MM 400
MaterialBall Ø mm
12152025
Order No.Order No.Order No.Order No.
Hardened steel53 29 4604510 29 28108
Rust-proof steel53 29 4604610 29 2810953 29 4303253 29 36805
Tungsten carbide53 29 4604710 29 28110
Agate53 29 46044
Zircon oxide53 29 4607310 29 2811353 29 43044
PTFE10 29 2604310 29 2811510 29 23045


Accessories MM 200 / MM 400 for cell disruption
ArticleOrder No.
Adapter MM 200/400 for 5 test tubes 1.5 and 2.0 ml10 29 28005
Adapter MM 200/400 for 10 test tubes 0.2 ml10 29 28006
Adapter rack MM 400 for 10 standard test tubes 1.5 and 2.0 ml10 29 28008
Grinding balls 3 mm, stainless steel, approx. 200 pcs.10 29 25002
Grinding balls 3 mm, tungsten carbide, approx. 200 pcs.10 29 25006
Grinding balls 3 mm, zirconium oxide, approx. 200 pcs.10 29 25007
Grinding balls 5 mm, stainless steel, approx. 200 pcs.10 29 25005
Grinding balls 5 mm, tungsten carbide, approx. 200 pcs.10 29 25004
Grinding balls 5 mm, zirconium oxide, approx. 200 pcs.10 29 25009



Other dimensions and glass beads available on request.

Recommended ball charges

 

Grinding bowl
volume
ml

Sample
volume
ml

Max.
Input grain
mm

Ball charge
quantity / diameter

1.5

0.2 – 0.5

1

1 – 2 / 5 mm

5

0.5 – 2.0

2

1 – 2 / 7 mm

10

2.0 – 4.0

4

1 – 2 / 10 mm, 1 – 2 / 12 mm

25

4.0 – 10

6

5 – 6 / 10 mm, 2 – 4 / 12 mm, 1 – 2 / 15 mm

35

6.0 – 15

6

6 – 9 / 10 mm, 4 – 6 / 12 mm, 2 – 3 / 15 mm

50

8.0 – 20

8

12 – 14 / 10 mm, 6 – 8 / 12 mm, 3 – 4 /
15 mm, 1 / 20 mm, 1 / 25 mm