2011 Shaker Survey Results

Mixing solutions is one of the most common laboratory tasks. Read on to discover the fascinating results of our most recent lab shakers and stirrers survey.

Brought to you by:

 

 

By

Mixing solutions is one of the most common laboratory tasks.

Magnetic stirrers are a popular type of laboratory stirrer that use a rotating magnetic field to cause a stirrer bar to rotate within the solution. These stirrers are often combined with a hotplate and are ideal for small volumes of non-viscous liquids and for situations in which a reaction must take place in a closed vessel or system. The overhead stirrer, however, is more suitable for larger volumes and more viscous solutions, but can be less convenient and more time-consuming to set up.

Lab shakers are available in two different mixing actions: orbital and reciprocal and are primarily used for culturing organisms in shake flasks or test tubes, and can also be used for mixing liquids. Shakers range from small to mid-size bench top models, larger-capacity console (floor standing) models, or spacesaving stackable models. Heavier loads may also require a heavy-duty drive mechanism such as a triple-eccentric drive vs. a lighter-duty single-eccentric drive. Samples in a lab shaker can be agitated via a linear motion or by an orbital motion to create a vortex in the solution. The principal application of shakers is for growing yeast, bacteria, or mammalian cells in specialized containers known as shaker bottles.

Different types of lab shakers and stirrers respondents are using or planning to purchase for their labs:

  Currently Using Planning to Purchase
Rocking shaker 93% 7%
Magnetic stirrers (scale) 95% 5%
Vortex shaker 92% 8%
Hotplate stirrers 90% 10%
Vibrating shaker 88% 12%
Overhead stirrers (economic) 89% 11%
Orbital shaker 88% 12%
Magnetic stirrers (digital) 87% 13%
Biological shaker 87% 13%
Overhead stirrers (analog) 87% 13%
Incubator shaker 87% 13%
Overhead stirrer (digital) 87% 13%
Reciprocal shaker 86% 14%
Magnetic stirrers (multi position) 82% 18%
Nutating shaker 82% 18%

Components respondents are using or planning to purchase with their lab shaker and stirrers:

  Currently Using
Microtube adaptor 22%
Stirring paddles 26%
Plate adaptor 19%
Stirring propellers 32%
Flask attachments 18%
Holding clamps 36%

There are many different factors to consider when making a lab shaker or stirrer purchase: is the equipment going to be used to grow cultures or to mix chemicals and liquids? Is temperature control needed and, if so, do you need incubation only or refrigeration as well? Do you need digital controls to ensure precise and reproducible results, or will analog controls do?

The technology in lab shakers and stirrers continues to advance at a fast rate. The future for lab shakers and stirrers is likely to involve the development of instruments that offer alternative mixing actions for more thorough and efficient mixing, possibly mimicking further the action of the human wrist. Other innovations are likely to include instruments capable of mixing more samples simultaneously and greater integration with other lab processes, allowing for more automation in the laboratory and less human intervention. A number of automated methods for mixing have been devised, all of which remove this burden from the operator by offering a sustained and controlled stirring action for indefinite periods of time.

Choosing a shaker comes down to such features as heating/cooling capability, capacity, shaking speed, orbital vs. reciprocating motion, ease of use, programmability, heating capability, and footprint. With research budgets tight and lab space even tighter, groups or departments are increasingly sharing shakers. Fourteen percent of respondents choose models that they are able to stack and keep them in a shared equipment room.

Customers also value ease of use—the ability to utilize shakers fully, out of the box, with labware of any shape and size.

The choice of overhead or magnetic stirring to achieve uniform mixing is relatively straightforward, based on scale and viscosity of the medium being stirred. Overhead stirrers are used when sample viscosity and/or size are issues, or when there exists a concern for significant changes in viscosity.

  Lab Stirrer   Lab Shaker
Durability of product 92% Durability/rugged design 92%
Low maintenance – easy to use and clean 85% Simple operation – easy to program and monitor 89%
Simple operation – easy to program and monitor 81% Low maintenance/easy to clean 87%
Compact design 75% Shaking speed 86%
Safety features 70% Compact design 71%
Minimal vibration 67% Low noise – quiet 66%
Price 63% Electronic speed controls 65%
Warranty 57% Warranty 63%
Temperature controls 54% Heating/cooling capability 59%
Energy efficient/low operating cost 49% Orbital vs. reciprocating motion 51%
Service and support 48% Wide range of accessories 48%
Wide range of accessories 42% Programmable controls 47%
Stackable up to three units 18% Nutating shaker 82%

Completed Surveys: 264

For more information on Shakers and Stirrers, visit www.labmanager.com/shakers-stirrers

See the most recent survey results

Categories: Surveys

Published In

Communicating Science Magazine Issue Cover
Communicating Science

Published: November 1, 2011

Cover Story

Communicating Science

The scientific community has historically taken a dim view of communications with nonscientific publics. No thanks, said scientists. What an imposition! Why bother? What good could possibly come from interrupting research, sticking our necks out and dumbing it down for non-scientific dunderheads, only to see them mismanage our findings?