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Thermo Scientific™ Vari-Mix™ and Speci-Mix™ Test Tube Rockers

Obtain uniform specimen suspension with the smooth rocking action of these compact, precision-controlled platform mixers.

Manufacturer:  Thermo Scientific™ M48725Q

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Catalog No. 12-815-3Q

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Obtain uniform specimen suspension with the smooth rocking action of Thermo Scientific™ Vari-Mix™ and Speci-Mix™ Test Tube Rockers. Compact and precision-controlled platform mixers, all models hold 10 to 30mm diameter tubes and are ideal for blood collection tubes.

  • Choose from fixed or adjustable speeds
  • Reversible pad provides one side (with lip to prevent sliding) for capped tubes 110mm (4.33 in.) long; other side for longer tubes
  • Autoclavable white silicone rubber pad enhances viewing
  • Can be used in a noncondensing incubator or coldroom with ambient operating conditions of 4° to 40°C (39.2° to 104°F) and 20 to 80% RH noncondensing
  • Includes white silicon rubber friction grip pad for holding tubes in place
Description & Specifications


Vari-Mix Test Tube Rocker
2 to 20rpm
20 to 80%
5.5 in.
120V 50Hz
16 (10-20mm); 7 (22-30mm)
17° to 27°C (Operating)
Adjustable rocking from 1° to 48° angle
4.3 in.
15 in.
5.8 lb.
5.5 x 15 x 4.3 in. (13.9 x 38.1 x 10.7cm)
2 to 20rpm
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