Merck 109257 CombiCoulomat® Fritless Aquastar® | Karl Fischer Coulometric Reagent for Trace Moisture Determination

Designed for high analytical performance, this reagent provides rapid endpoint detection, excellent accuracy, low background drift, and outstanding long-term stability. It is widely used in pharmaceutical laboratories, petrochemical industries, chemical manufacturing, food testing, environmental analysis, and quality control laboratories.

Appearance

• Product Name: CombiCoulomat® Fritless Aquastar®
• Brand: Merck
• Catalog Number: 109257
• Product Line: Aquastar®
• Product Type: Karl Fischer Coulometric Reagent
• Physical Form: Clear liquid
• Color: Colorless to pale yellow

Physical and Chemical Properties

Key Features and Benefits

✔ Ready-to-use formulation requiring no preparation

✔ Designed for accurate trace moisture analysis

✔ Optimized for fritless (diaphragmless) Karl Fischer cells

✔ Fast reaction kinetics and rapid endpoint detection

✔ Low reagent drift for improved analytical accuracy

✔ Excellent reproducibility and long reagent lifetime

✔ Compatible with most Karl Fischer coulometric titrators

✔ Manufactured under Merck's rigorous quality standards

Applications

Merck 109257 CombiCoulomat® Fritless Aquastar® is widely used in:

• Trace moisture determination
• Karl Fischer coulometric titration
• Pharmaceutical quality control
• Petrochemical and petroleum testing
• Chemical manufacturing
• Solvent moisture analysis
• Food and beverage testing
• Polymer and plastics analysis
• Cosmetics and personal care products
• Environmental laboratories
• Research and academic institutions

Safety Information

This reagent contains flammable and hazardous chemicals and should be handled according to standard laboratory safety procedures.

• Highly flammable liquid and vapor.
• Harmful if swallowed, inhaled, or absorbed through the skin.
• Use only in a well-ventilated laboratory or chemical fume hood.
• Wear appropriate personal protective equipment (PPE), including chemical-resistant gloves, safety goggles, and a laboratory coat.
• Keep away from heat, sparks, open flames, and oxidizing agents.
• Avoid direct contact with skin and eyes.

Storage Conditions

• Store in a cool, dry, and well-ventilated area.
• Keep the container tightly closed when not in use.
• Protect from direct sunlight and moisture.
• Store away from ignition sources and incompatible materials.
• Follow the manufacturer's recommended storage conditions to maintain reagent performance.

Why Choose Merck 109257 CombiCoulomat® Fritless Aquastar®?

Merck 109257 CombiCoulomat® Fritless Aquastar® delivers exceptional precision, reliability, and stability for coulometric Karl Fischer moisture analysis. Its optimized formulation minimizes background drift while providing rapid and reproducible moisture measurements, making it the preferred reagent for laboratories performing high-accuracy trace water determination.

Trusted by analytical laboratories worldwide, this reagent combines Merck's renowned quality with the proven performance of the Aquastar® product family.