GFS Watermark 5 mg/mL Stable Non-Hygroscopic Karl Fischer Titrant is a volumetric Karl Fischer titrant for routine moisture determination in compatible laboratory samples. The 5 mg/mL strength is commonly used for samples with moderate to higher water content where a standard volumetric titrant concentration is appropriate.
This is a titrant only and is intended for use with a compatible Karl Fischer solvent or buffer system. It should not be described as a single-solution reagent. For proper performance, use this titrant with the appropriate GFS Watermark KF solvent or buffer recommended for the sample matrix.
The stable, non-hygroscopic formulation is designed to help maintain consistent titer strength and improve reliability in routine volumetric KF analysis. GFS Watermark Karl Fischer reagents are manufactured for volumetric and coulometric water determination applications.
For samples containing aldehydes, ketones, or other reactive compounds, confirm reagent and solvent compatibility before analysis. Standard Karl Fischer systems may be affected by side reactions and can produce inaccurate water results if the wrong reagent system is used.
Feature bullets
5 mg/mL Karl Fischer titrant for volumetric moisture analysis
Stable, non-hygroscopic formulation for routine laboratory use
Designed to support consistent titer strength
Intended for use with compatible KF solvent or buffer
Suitable for many routine volumetric Karl Fischer applications
Manufactured by GFS Chemicals under the Watermark reagent line
Not a single-solution reagent; requires the correct solvent or buffer system
Confirm compatibility before analyzing aldehydes, ketones, or reactive sample matrices
Technical note / caution
Important: This product is a Karl Fischer titrant and must be used with a compatible KF solvent or buffer. Do not use this page language to imply that the titrant alone is suitable for all sample types. Aldehydes and ketones may interfere with conventional Karl Fischer analysis unless the proper reagent system is selected.
