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REFERENCE STANDARDS
10 Critical Steps
Reference Materials (CRMs)
Offer a Variety of Documentation
Restek exclusively offers three levels of fully ISO-compliant documenta-
tion for our CRMs, and most stock CRMs come with quantitative-level
documentation.
Gravimetric: Product supplied with the gravimetric records listing
purity of each material used, calculated concentration, and a unique
lot number.
Qualitative (Certificate of Composition): A sample withdrawn
from the packaged units is tested by the appropriate technique to
verify mixture composition. Product supplied with a certificate of
composition showing a chromatogram of the standard with each peak
identified, raw material purity, and gravimetric concentration.
Quantitative (Certificate of Analysis): A sample of the packaged
unit is analyzed in triplicate and the peak areas are statistically com-
pared to a previous lot (if available) or a second lot. A detailed data
pack is available at containing
gravimetric documentation, all quantitative assay raw data, exact
amount of each raw material used, total volume prepared, and
statistics. Test results for raw material purity and identification are
available upon request.
Documentation for all of your stock and custom Restek® CRMs is a few
clicks away at
7
Package Securely & Label Clearly
Every Restek® CRM is placed in durable, high-quality packaging for dock-
to-door protection. Labeling provides critical storage, safety, and shelf life
information in an easy-to-read format—and now features bar-coded GHS
labeling for added safety and easier compliance.
8
Protect Product Quality After Opening
To help preserve the integrity of our CRMs after they are opened,
we include a deactivated screw-top vial (cat.# 24640) with each
stock reference standard <5 mL for worry-free transfer and reliable
temporary storage.
9
Manage Warehouse Inventory
To ensure the inventory is available when it’s needed, Restek
continually analyzes and maintains inventory of more than 1,500
catalog standards as well as multiple lots of the most commonly
requested calibration standards. We pull inventory months before its
expiration date to eliminate inadvertent delivery of expired or nearly
expired reference standards.
10
Establish a Blanket /
Standing Order Today
Save Up
to 75% on
Custom CRMs!
Need a Custom CRM?
Our ISO-Accredited Labs
Can Supply Them!
In addition to an extensive
selection of reference standards
that is in-stock and ready to
ship, Restek’s custom-formulated
solutions also fall under our
ISO Guide 34 and ISO/IEC 17025
accreditations. Satisfy all of
your certified reference material
needs—as well as order GC and
LC columns, sample prep supplies,
and accessories—using one
reliable supplier: Restek.
Request a quote for your custom
reference standards today! Visit
rm
• Significant cost savings.
• Fewer purchase orders and invoices.
• Less instrument downtime.
• Reduced inventory management.
• Flexibility to adjust to changing needs.
Contact Customer Service or your
local Restek® representative to learn
more and start saving!