Light source provides versatility
Carl Zeiss MicroImaging (Thornwood, NY) recently introduced its "Colibri" light-emitting diode (LED) light source for fluorescence
microscopy. The product is "the only LED light source optimized for white-field microscopy systems," says Becky Homan, product
manager for biomedical light microscopy. The light source enables the sequential and simultaneous activation of LEDs. Users
can change the LEDs' output signals by varying their voltages. They also can incorporate a conventional white light source
to complement the LEDs. These features allow the light source to provide ultraviolet to dark red wavelengths.
Colibri light source (Carl Zeiss MicroImaging)
Homan observes, "It's simple for the user to unplug and replug a new LED module into this device," and adds that the unit
is designed to accept upgrades easily. The Colibri unit controls LEDs opto-electronically, thus preventing vibration that
reduces image quality. The product's LEDs provide high-contrast images that permit users to detect weak signals and fine details.
Freeze dryers speed process
The "Revo Series" freeze dryers from Millrock Technology (Kingston, NY) are intended to help users develop protocols for their
products more easily, according to T.N. Thompson, the company's president. "Opti-Dry Pro" software monitors measurement techniques
such as temperature test, pressure-rise test, and moisture sensing. When the test results reach customer-set values, the software
directs the dryer to complete primary drying and begin secondary drying. Thompson says this feature "greatly speeds up the
Revo Series freeze dryers (Millrock Technology)
Thompson notes that the Revo series dryers use exposed-coil condensers. As ice builds up on the coils, their surface area
increases, thus resulting in more efficient condensing. In addition, the dryers include numeric and graphic data collection
as a standard feature, which Thompson remarks is uncommon for such units. The machines also offer 10 ft2 of total shelf area, more than that of comparable systems, Thompson observes.
Process indicator simplifies control
The "X3" process indicator from Sartorius (Edgewood, NY) facilitates the control of process hopper scales with strain-gauge
load cells for process-automation applications. Jim Rodina, the company's application engineer, says users can configure the
device through a web browser by using virtual network connection (VNC) technology. One can store, edit, and manage configurations
with Sartorius's "ConfigureIt Professional" software. Rodina adds that the VNC technology enables remote troubleshooting and
eliminates the need to install software on individual computers.
X3 process indicator (Sartorius)
Users can link the indicator to a computer network through the device's Ethernet interface. The machine can thus instantly
transmit weight values and process-status messages. Rodina says the indicator has "an upgraded processor in it, so the process
time is much improved." Fieldbus allows the unit to be integrated into automation systems easily.
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