what’s new
Firmware for mass flow meters and controllers Alicat Scientific has expanded its Gas Select firmware to include a library of up to 130 preloaded gases, referenced to NIST Prop 9 and a utility for defining mixed gas compositions. The Composer utility gives users the ability to quickly program and store up to 20 personalised gas compositions directly on Alicat mass flow meters and mass flow controllers. The utility allows the devices to
Benchtop freeze dryers
adapt to a range of laser
The Martin Christ Epsilon 1-4 LSCplus and Epsilon 2-4 LSCplus
manufacturing applications and users’ changing needs.
benchtop freeze dryers are high-performance, universal laboratory
The firmware comes on all Alicat mass flow meters and control-
and pilot systems for lyophilisation of solid or liquid products in
lers. Version 5.0’s expanded library includes up to 130 preloaded
ampoules, vials, glass flasks, plasma bottles or dishes. They share a
full gas calibrations, depending on the instrument series. In ad-
geometrical likeness with large production machines and use similar
dition to many pure gases, the firmware includes six gas mixes
temperature-controlling systems.
common for carbon dioxide and helium-neon lasers. The library
The Epsilon 1-4 LSCplus and Epsilon 2-4 LSCplus units have an internal ice condenser temperature with a minimum of -55 and -85°C
has also been updated to include complete NIST Ref Prop 9 gas properties data for the preloaded gases and gas mixes.
respectively and are available with one shelf with 0.11 m useable
For precise control of virtually any type of laser gas, the Com-
surface area. The dryers are suitable for pre-freezing products on
poser module brings customisation and flexibility to accurate
temperature-controlled shelves; freeze drying (sublimation) of products
mixed gas measurement. Using the device’s integrated digital
according to pre-selected desired time, temperature and pressure
display, users can define gas compositions to 0.01% for each of
profiles; and final drying of products.
up to five constituent gases. Up to 20 laser gas mixes can be
2
The latest cooling techniques provide for shelf temperatures of -45
created and stored simultaneously on each device. Users who
or -70°C (pre-freezing) in the compact chamber. This permits sensitive
operate their instruments via computer can generate gas lists for
pharmaceutical and biotech products, eg, amorphous structures with
multiple devices in seconds with single line RS232 commands. As
a low glass transition point, to be freeze dried safely.
personalised gas compositions can be added or deleted quickly,
John Morris Scientific Pty Ltd www.johnmorris.com.au
the instruments easily adapt to different flow needs in the future. Duff & Macintosh www.duffmac.com.au
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LAB+LIFE SCIENTIST - April 2015 | 43