Composite samplers are not new but the concept of the Glacier Sampler is allowing accurate samples to be obtained and preserved over long time periods without being reliant on mains power or ice. The Glacier
composite sampler combines a new active temperature control system with the mobility, small size and light weight of a portable sampler, yet it allows sample collection over extended periods of time.
Calcium
Description of the term: Calcium
Calcium is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth's crust. Calcium is also the fifth most abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.
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