Drum bottle holder, Adjustable Tilt

Quick Answer: The Drum bottle holder, Adjustable Tilt is a clear drum for a rotator drive that can be set at an angle to the axis of rotation, so the tubes or bottles inside roll along their length as well as turning end over end.

What the Tilt Adds

The photo shows a transparent drum packed with coloured tubes, mounted at an angle on a blue drive with a tapered end support, the arrangement used with the Rotary mixer STR4. A drum set square to its axis simply inverts its contents. Setting it at a tilt adds a second movement, because the contents also slide along the vessel on each turn, which gives a rolling, figure-of-eight style of mixing.

That extra movement helps with materials that resist simple inversion: dense suspensions that pack at one end, viscous liquids, or powders being wetted by a liquid. Being able to adjust the angle lets the same drum give gentle inversion for delicate samples and a more vigorous rolling action for harder mixing.

The holder carries tubes or bottles, and the photo shows it full of tubes. The vessel sizes it accepts, the angle range and how the tilt is locked are not given in the title. For two 250 mL bottles held square, the STR4 bottle drum is the dedicated alternative.

Mixing Jobs That Benefit from Tilt

• Wetting and dispersing powders in liquid inside closed bottles
• Mixing dense or viscous suspensions that do not blend by inversion alone
• Gentle, continuous blending of many tubes during a long incubation
• Comparing mixing efficiency at different angles in a teaching practical

Specifications

Care & Handling

• Lock the tilt setting securely before starting the drive.
• Wedge vessels firmly so they cannot shift when the drum is at an angle.
• Clean the clear drum with mild detergent and a soft cloth; solvents and abrasive pads can cloud it.
• Check for leaks at low speed before a long run.

Why Choose LabEquip

Labs that already use an STR4-style drive add this holder when simple end-over-end mixing is not enough. It is listed in General Lab Products with the other drive accessories.

Frequently Asked Questions

Why tilt the drum at all?

Tilting adds movement along the vessel to the usual end-over-end turn, so contents roll as well as invert. That mixes dense, viscous or powdery materials more thoroughly.

Does the holder fit the STR4 drive?

The photo shows it mounted on a drive of the STR4 style. Give your drive model when ordering so the mounting can be confirmed for your unit.

Can bottles and tubes both be used?

The name mentions bottles and the photo shows the drum filled with tubes. Which vessel sizes it accepts depends on the inserts supplied, so check your vessels against them.

What angle should be used?

Start with a small tilt for delicate samples and increase it for heavy suspensions or powders. Record the setting so the same mixing can be repeated.

How are vessels kept from sliding when tilted?

Fill the drum’s positions snugly, use spacers or foam where vessels are loose, and close caps firmly. A loose vessel shifts on every turn and can crack.

How should the clear drum be cleaned?

Use warm water, a mild detergent and a soft cloth, then dry it. Avoid acetone and abrasive pads, which can scratch or cloud transparent plastics.

Last Updated: September 2026