Page 230 - Praxair - Specialty Gases and Equipment Reference Guide

Life Sciences and Healthcare

Laboratory Gases and Services

Life science and healthcare analytical and research
laboratories depend on the purity and integrity of
Praxair products to help them conduct the most
accurate experiments possible. Praxair supplies
laboratories with a full line of high-purity analytical
instrumentation gases, reagent gases, and gas
mixtures. Praxair also provides all the equipment
necessary to preserve the purity of those gases and
employ them productively and safely in the laboratory.

i

See pages D•214 - D•218 for additional information
on Praxair’s analytical instrumentation gases.

Laboratory Assessment Program
Praxair applies its extensive experience with specialty
gases and equipment to help laboratory managers and
scientists review their gas needs and select the proper
gas products and delivery systems.

Praxair’s Laboratory Assessment Program examines
all aspects of gas use, handling, and storage to help
laboratories:
n Improve productivity
n Optimize supply modes
n Protect instrumentation and equipment
n Better utilize bench and floor space
n Implement appropriate safety measures
n Streamline transaction processing
n Ensure appropriate product grades and certifications
n Improve asset management
n Reduce costs and mitigate risk

Application Spotlight:
Nitrogen for LC-MS

Liquid chromatography-mass spectrometry (LC-MS) is a warrants a cryogenic liquid supply source. Most commonly, and Healthcare Life Sciences
powerful analytical technique that combines the broadly LC-MS users employ liquid dewars or microbulk systems.
applicable separation capabilities of LC with the outstanding Membrane systems producing nitrogen on-site from a
identification and quantification capabilities of MS. LC-MS compressed air source have become another popular
has become a standard technique in the life sciences and option. Praxair offers a comprehensive suite of nitrogen
healthcare for its particular capability to handle non-volatile supply methods and works with LC-MS users to select the
and thermally labile species (e.g, proteins). Nitrogen gas optimum supply mode depending on their situation and
plays a key role in coupling the LC and MS methods by needs. Praxair analyzes various factors, including type and
assisting nebulization and drying of the liquid fractions eluted number of instruments, facility location and layout, and
from LC so they can be ionized for MS analysis. The high instrument usage levels along with user concerns about
flow of nitrogen gas required for this application typically productivity, cost, and reliability.

1-877-PRAXAIR www.praxairdirect.com D•229