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the most common rack design used on

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board the iss is a multi-purpose payload

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rack called express which stands for

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expedite the processing of experiments

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to space station

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there are eight modular express racks

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spread throughout the station's three

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laboratories

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each rack provides important resources

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such as power cooling water and data

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connections to support up to 10

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individual experiments

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the versatility of the express racks

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makes them ideal for conducting physical

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chemical and biological experiments in

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microgravity

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the binary colloidal alloy test or bcat

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researches how liquids and gases

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separate or alternately come together

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astronauts also study the patterns that

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emerge when solids are suspended in

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liquids

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what scientists learn from bcat

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observations may be used to create

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better stabilizers that extend the shelf

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life of food products and medicines here

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on earth

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biological science is also researched in

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the express racks

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the advanced biological research system

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has two growth chambers

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each with independent controls for

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temperature light and atmospheric

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conditions

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the chambers are used to grow various

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organisms like plants small insects and

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microorganisms

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the commercial generic bioprocessing

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apparatus or cgba enables automated

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processing for the microscopic study of

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protein crystal growth bacteria and cell

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cultures

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the cgba also houses insect habitats and

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plant development modules

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these two examples of biological

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research systems will help scientists

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gain a better understanding of how