Stuart STR4 Rotator

Code: STR4
  • Variable speed rotator
  • Simple analogue two knob operation
  • Adaptable for tubes and containers

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Stuart STR4 Rotator by Cole Parmer is the drive unit accepting five different drums which can be switched as required to enable mixing of a range of tubes and vessels; maximum load is 3kg. Speed is adjustable between 6 to 60 rpm and the analogue timer can be set to allow operation between 10 to 60 minutes or the user can choose to run rotations continually. A driver must be ordered with at least one drum see below.

Ordering Information

STR4 Rotator driver unit, size W 650 x  D 250 x H 250mm, weight 6.4kg.  IP Rating 31. Power 230 volts, 50hz, 50 watts. stock code WZ-51600-06
As above but 220v, 60hz, stock code WZ-51600-04
As Above but 120v 60hz, stock code WZ-51600-02


STR4/1 Drum to hold test tube clip plates, stock code WZ-51600-95
Designed to rotate test-tubes in an end-over-end movement. A square metal drum which can have four different clip plates for varying tubes sizes as detailed below.  Up to four plates can be mounted on the drum. Easy fitting via a push-button mechanism.
STR1/1 Clip plates for 12 x 12mm tubes (per pair) code WZ-51600-91
STR1/2 Clip plates for 10 x 16mm tubes (per pair) code WZ-51600-92
STR1/3 Clip plates for 8 x 19mm tubes (per pair) code WZ-51600-93
STR1/4 Clip plates for 7 x 24mm tubes (per pair) code WZ-51600-94

STR4/2 Drum with two platforms to hold flasks or bottles, stock code WZ-51600-96
Drum accepts 2 x 250ml conical flasks or reagent bottles for end over end mixing. Held in place by a collar that fits around the neck of the flask or bottle and is secured by two washers.

STR4/3 Drum, figure 8 mixing, stock code WZ-51600-97
Drum holds the vessel at a 45º angle, so it is rolled and turned end over end at the same time giving a vigorous figure of 8 mixing action. The sample container is retained by a sturdy Velcro strap. Accepts most containers including reagent bottles, powder jars and paint tins up to 200mm in length and 120mm diameter.

STR4/4 Drum with four-segment cradles holding up to four bottles, stock code WZ-51600-98
The drum consists of a four-segment Perspex cradle. Each segment is fitted with a fully adjustable Velcro strap to hold bottles and other containers up to 120mm diameter and up to 300mm in length.

STR4/5 Drum with four-segment cradles and four tube racks, stock code WZ-51600-99
Designed to rotate test-tubes in an end-over-end movement. Comprises a square metal drum which can accommodate a choice of plates fitted with tube clips. Up to four plates can be mounted on the drum. Easy fitting via a push-button mechanism.
SW2/1 Spare rack for 60 x 1.5ml tubes

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Title Size
Stuart_STR4_drive_unit_rotator 327 KB
STR4_Manual 366 KB

Additional information

Weight0.09 kg