Analytical Chemistry ,
Molecular Biology
Dynamic Light Scattering instrument
The Wyatt NanoStar introduces a new Dynamic Light Scattering (DLS) instrument
designed to deliver optimum versatility and stability. The Wyatt NanoStar’s
features include a Static Light Scattering detector so it can measure
hydrodynamic radii but also absolute molecular weights. The instrument also
has a TCP/IP interface, to allow it to be added to a laboratory network
instantly and operated from anywhere with an Internet connection. The
built-in temperature control provides fast response times and wide
temperature range (4–150°C). The Nanostar offers the most precise
temperature control ever available in batch DLS, with a stability of better
than 0.01°C over the entire range, and a proprietary thermal design that can
change temperatures as quickly as 15°C/min, according to Wyatt. When
operating below ambient temperatures, the NanoStar employs a dual valve dry
nitrogen flow that keeps the cell dry and dust free. The NanoStar's
multi-mode fibers collect a larger fraction of the scattered light, which
gives better performance for weak scattering samples. With higher
sensitivity, the NanoStar also detects trace amounts of aggregation, Wyatt
reports.
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