1. Custom Products GFS Chemicals, Inc. A specialty chemical manufacturing company
offering a full line of Watermark/Karl Fisher reagents
GFS remains focused on what we
do well. Our production environ-
ment provides the flexibility to
offer customers solutions to their
problems. We have a development
staff ready to support your
application need and the manu-
facturing capabilities to support
you long term. GFS is the perfect
business partner for your
specialty chemical need. Our
flexibility is an asset.
We would be happy to talk direct-
ly with you about your individual
requirements. Please contact us
and learn the advantages of
working directly with the
manufacturer for any of your
organic production needs. For
more information call toll-free at:
800-858-9682 or visit
gfschemicals.com
e-mail:
development@gfschemicals.com

2. WaterMark®
Karl Fisher Reagents
GFS Chemicals, Inc. has
one of the largest selec-
tions of Karl Fisher for-
mulations on the market
today and the expertise
to meet your particular
needs:
• One of the highest water
capacities available in coulomet-
ric reagents. (In excess of 1,000
mg water/100 ml charge!)
• Formulations specific for alde- Formulations that are free of: The reader will find useful infor- For more information, contact:
• Titer strengths available from hydes and ketones. • CFC’s mation on WaterMark® Karl Jim Williamson, WaterMark® and Organic Halogen
0.5 mg/ml to 5 mg/ml. (The • Chloroform Fischer products from reaction Reagent Product Line Manager
widest on the market today!) • Solvents for water analysis in • Methanol mechanisms through safety, solu- 614-224-5345 x126
sugars, oils and waxes. tion preparation and standardiza- 740-881-5440 x394 (Voice Mail)
• A reagent that serves as both A bottle adapter kit to enable the tion, methods, applications and e-mail: jwilliamson@gfschemicals.com
anolyte and catholyte in • Water standards sealed in use of small-mouth American-style storage.
diaphramless coulometers! ampoules under ultra-dry nitrogen one-liter bottles on 45mm
for almost infinite stability. European-style machines. Both single component and dual
• Stable non-hygroscopic component volumetric and coulo- soft vignette outline
titrants! Made in America! Most orders The WaterMark® “Karl Fisher metric reagents.
shipped from Columbus, Ohio Book” is available at no charge
within 24 hours of being placed and is written for all levels of tech- Pyridine containing formulations
for improved freshness and capac- nical expertise. for when pyridine is specified.
ity compared with imported
reagents. Easily substituted with other
brands of Karl Fischer reagents on
WaterMark® reagents work with a the market at competitive prices.
wide variety of titrators on the (Refer to substitution charts for
market today including: the extensive list of reagents
Brinkman, PhotoVolt, Mettler, WaterMark® can replace.)
Mitsubishi, KEM, CSC, Orion and
Fisher.
Pre-mixed buffer solutions.