WaterMark®

Karl Fischer Reagents

Achieve accurate and dependable moisture analysis with our Karl Fischer reagents. Formulated for both volumetric and coulometric titration, these high-purity reagents deliver precise results across a wide range of sample types. Trusted for consistency, stability, and performance—perfect for laboratories demanding reliable water content determination.

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One Component Reagents

Ensure precise and reliable moisture determination with our Karl Fischer one-component reagents. Designed for accuracy and convenience, these ready-to-use formulations simplify titration without compromising performance—ideal for laboratories seeking consistent, traceable results every time.

One Component Reagents:

One Component Solvents

Simplify your moisture analysis with our Karl Fischer One-Component Solvents. These all-in-one formulations combine the titrant and solvent in a single solution eliminating preparation steps while ensuring precise, reliable results. Ideal for fast, accurate water determination in a wide range of samples.

One Component Solvents Products:

Two Component Reagents

Get precise, consistent moisture analysis with GFS Chemicals Karl Fischer Two-Component Reagents. Designed for flexibility and accuracy, this system separates the titrant and solvent for enhanced stability and longer reagent life. Ideal for demanding applications requiring reliable water determination across diverse sample types.

Two Component Reagents Products:

Two Component Solvents

Unlock exceptional precision with GFS Chemicals Karl Fischer Two-Component Solvents. Engineered for peak performance, these high-purity solvents pair perfectly with separate titrants to deliver unmatched accuracy and stability. Experience faster reactions, longer reagent life, and consistent, traceable results. Excellent for laboratories that demand confidence in every moisture determination.

Two Component Solvents Products:

KARL FISCHER

COMPETITION COMPARISON

Discover how GFS Chemicals Watermark™ Karl Fischer titration reagents outperform major competitors in analytical accuracy, batch stability, instrument compatibility, and cost efficiency. Our detailed comparison makes it easy to identify which reagents deliver the most consistent moisture analysis results across a wide range of applications.

Brand	Item #	Description	GFS Item #
Hydranal	34805	Composite 5	1600
Aquastar	188005	CombiTitrant 5	1600
Aqualine	AL2200	Complete 5	1600
Hydra-Point	6271-68	KF Reagent 5 mg/ml	1600
Aquamicron	SSZ50L	Titrant SS-Z 5 mg/ml	1600
Quveon	23268	Composit 5T	1600
Hydranal	34806	Composite 2	1601
Aqualine	AL1950	Complete 2	1601
Aquastar	188002	CombiTitrant 2	1601
Hydra-Point	6272-68	KF Reagent 2 mg/ml	1601
Aquamicron	SSZ30L	Titrant SS-Z 3 mg/ml	1601
Quveon	23336	Composit 2T	1601
Hydranal	34801	Titrant 5	1616
Aquastar	188010	Titrant 5	1616
Aqualine	AL1900	Complete 1	1884
Hydra-Point	6274-02	KF Titrant 5 mg/ml	1616
Quveon	22251	Titrant 5T	1616
Hydranal	34811	Titrant 2	1603
Aquastar	188011	Titrant 2	1603
Quveon	25299	Titrant 2T	1603
Hydra-Point	6273-02	KF Titrant 2 mg/ml	1603
Hydranal	34827	Composite 1	1884
Aquastar	188001	CombiTitrant 1	1884
Aqualine	AL22001	Titrant 5	1616
Quveon	23367	Composit 1T	1884
Hydranal	34816	Composite 5K	1893
Aquastar	188006	CombiTitrant 5K	1893
Hydranal	37817	Methanol Rapid	1885
Quveon	24275	Methanol Sharp	1885
Hydranal	34800	Solvent	1610
Aquastar	188009	CombiMethanol	1610
Aquamicron	GEX	Solvent GEX	1610
Quveon	21114	Solvent	1610
Hydranal	34738	Keto Solver	1609
Aquastar	188007	CombiSolvent Keto	1609
Hydra-Point	6275-68	KF Solvent Methanol Free	1609
Hydranal	20618	Working Medium K	5322
Aqualine	AL2300	Matrix K	5322
Hydra-Point	6275-68	KF Solvent Methanol Free	5322
Aquamicron	KTX	Solvent KTX	5322
Quveon	43503	Solvent KT	5322
Hydranal	37856	LipoSolver MH	2978
Aquastar	188016	Solvent for Oils & Fats	2978
Aquamicron	OLX	Solvent OLX	2978
Quveon	26541	Solvent CX	2978
Hydranal	34697	Solver Crude Oil	2978
Aquastar	188020	CombiSolvents Oils	2978
Aquamicron	OL2	Solvent OLII	2978
Aqualine	AL2110	Solvent CM	2991
Hydranal	34741	Methanol, Dry	3569
Aquastar	188009	CombiMethanol	3569
Hydra-Point	6290-68	Methanol Anhydrous	3569
Hydranal	34800	Solvent	1610
Aquastar	188015	CombiMethanol Solvent	1610
Hydra-Point	6276-68	General Purpose Solvent	1610
Aqualine	AL21001	Solvent	1610
Hydranal	34817	Working Medium K	1609
Hydra-Point	6275-68	KF Solvent Methanol Free	1609
Quveon	43503	Solvent KT	1609
Hydranal	37855	Solvent CM	2991
Aquastar	188016	Solvent Oil	2991
Quveon	26541	Solvent CX	2991
Aqualine	SK3	SK3	1620
Aquamicron	GKS100M	Titrant SS	1620
Aqualine	SKS	SKS	1621
Aquamicron	GML	Solvent ML	1621
Hydranal	34804	Buffer	1615
Aquastar	188035	Buffer	1615
Aqualine	AL2350	Buffer	1615
Hydra-Point	6282-02	Buffer Solution	1615
Quveon	20756	Buffer Acid	1615
Hydranal	37864	Imidazole	1973
Aquastar	13709	Imidazole	1973
Hydranal	32035	Benzoic Acid	673
Aquastar	BX0360	Benzoic Acid	673
Aqualine	AC423475000	Benzoic Acid	673
Aqualine	AL-2720-80	Water Standard 10	1892
Aquastar	109259	Water Std. 5 mg/mL	1617
Aquamicron	GCHP	GCHP Check Solution P	1617
Aqualine	AL2730-500	Water Standard 5	1617
Aqualine	AL2710-40	Water Standard 1	1618
Hydranal	34849	Water Standard 10	2303
Aquastar	188052	Water Standard 1.0%	2303
Aquamicron	AWS100V	Water Standard 10	2303
Quveon	81037	Water Standard 10.0	2303
Hydranal	34813	Water Standard 5	2304
Hydranal	34828	Water Standard 1.0	2302
Aquastar	188051	Water Standard 0.1%	2303
Aquamicron	AWS10V	Water Standard 1.0	2302
Quveon	81024	Water Standard 1.0	2302
Aquamicron	AWS02v	Water Standard 0.2	5692
Hydranal	34847	Water Standard 0.1	2301
Aquastar	188050	Water Standard 0.01%	2301
Aquamicron	AWS01V	Water Standard 0.1	2301
Quveon	81014	Water Standard 0.1	2301
Hydranal	34803	Sodium Tartrate Dihydrate	805
Aquastar	106664	Sodium Tartrate Dihydrate 15.66%	805
Aqualine	K2770	Sodium Tartrate Dihydrate	805
Hydranal	34963	Potassium Citrate Standard	2385
Aqualine	K2760	Potassium Citrate Standard	2385
Aquamicron	SWS	Solid Water Standard	2385
Hydranal	34788	Humidity Absorber	963
Aquastar	MX1583D	Molecular Sieve 3A	963
Hydranal	34807	Coulomat A	1612
Aquastar	AX1697A	Coulomat A	1612
Hydra-Point	6280-02	Karl Fischer Coulometric Vessel Solution (Pyridine-Free)	1612
Aquamicron	XAMA	AX	1612
Quveon	15572	Coulometric AGR-C	1612
Aqualine	AL2500	Electrolyte A	1612
Aqualine	AL2510	Electrolyte AD	1612
Hydranal	34820	Coulomat AK	1619
Aquamicron	AKX	AKX	1619
Aquastar	AX1697E	Coulomat AK	1619
Hydra-Point	6283-01	Coulometric Vessel Solution for Aldehydes and Ketones (Methanol-Free)	1619
Hydranal	34843	Coulomat AG-H	1607
Hydra-Point	6284-01	Karl Fischer Coulometric Vessel Solution (CFC-Free)	1607
Quveon	16138	AHR	1607
Aqualine	K-2530	Electrolyte AG-H	1607
Aquamicron	SAMA	AS	1607
Hydranal	34868	Coulomat Oil	5202
Quveon	17145	Coulometric AGR-OIL	5202
Hydranal	34840	Coukomat CG	1613
Quveon	13060	Coulometric CGR	1613
Aqualine	AL2560	Electrolyte CG	1613
Hydra-Point	6281-00	Karl Fischer Coulometric Generator Solution (Pyridine-Free)	1613
Hydranal	34841	Coulomat CG-K	2321
Hydranal	34851	Coulomat CG-K	2321
Aquastar	1697C-1	Coulomat C	2321
Hydra-Point	6286-00	Coulometric Generator Solution	2321
Aquamicron	CXU	Aquamicron CXU	2321
Hydranal	34836	Coulomat AG	1671
Hydranal	34810	Coulomat AD	1671
Aquamicron	AXMI	AXI	1671
Aquastar	188079	Anolyte	1671
Aquastar	109255	CombiCoulomat Frit	1671
Aquastar	109257	CombiCoulomat Fritless	1671
Aqualine	AL2520500	Electrolyte AG	1671
Hydra-Point	6280-02	Karl Fischer Coulometric Vessel Solution	1671
Quveon	11008	Coulometric AGR	1671
Aquamicron	FLS	FLS	1889
Hydranal	34739	AG-Oven	1889
Hydra-Point	6287-02	KF Coulometric Oven Reagent	1889
Quveon	18411	Coulometric AGR-Oven	1889