Karl Fischer Reagent

Karl Fischer reagents are used in the analysis of water content in raw material and finished products in food, pharmaceutical, chemicals and oil industries. To address the growing demand of stable Volumetric Karl Fischer reagents, Ours R&D has developed an in-house technology which is suitable for manual and automatic equipment ensuring a consistent factor. We also provide Coulometric Karl Fischer Reagents from Aquamicron, Japan

Karl Fischer Titration – Volumetric & Coulometric titration


Karl Fischer titration (Volumetric and Coulometric) is used to analyse moisture content in pharmaceutical, petroleum, cosmetic, chemical and food samples. This method uses Karl Fischer reagents which react quantitatively and selectively with water to measure moisture content. Karl Fischer reagent consists of iodine, sulphur dioxide, a base and a solvent such as alcohol.

I2 + SO2 + 3Base + ROH + H2O ⇒ 2Base . HI + Base . HSO4R

Actylis’s - Volumetric Karl Fischer Reagents


In Volumetric Titration a dehydrating solvent suitable for the sample is placed in a flask after which a titrant is used to remove all the moisture from the solvent. After adding the sample, titration is carried out using a titrant, the titer (mg H2O/ml) of which has previously been determined. The moisture content of the sample is determined from the titration volume (ml) and the end point is detected using the constant-current polarization voltage method.


Karl Fisher reagent
Product Features :

Made from anhydrous ingredients which give constant and stable factor

  • Consistent and accurate results.
  • Suitable moisture estimation of inorganic & organic salts and solvents.
  • Suitable for 200 ppm to % level of water content.
  • Ideal viscosity for manual & automatic titrators and high titration speed.
We offer:
Product Code Description Pack Size
20805LM500 Karl Fischer Reagent (Pyridine free) 500 ml
20805LM250 Karl Fischer Reagent (Pyridine free) 2x250 ml

Karl Fischer Reagent – Reliable Moisture Estimation

Moisture testing is simple and reliable with Karl Fischer Reagent. The formulation uses anhydrous ingredients to maintain a stable factor and reduce the need for frequent calibration. You get consistent and accurate results across various sample types.

It supports moisture estimation from 200 ppm to percentage level in inorganic and organic salts and solvents. The unique composition gives optimal viscosity for both manual and automated titrators. It also helps you achieve faster titration speed.

Suitable for:
  • Fine and agrochemicals
  • Drugs and APIs
  • Petroleum products
  • Pigments and dye intermediates
  • Food and natural extracts
  • Plastics and polymers

Volumetric Reagents (USP 3G Monograph G21)

Product Code Description Titre Range Pack Size
SSZ10M AOUAMICRON SSZ10M 0.7–1.2 mg H₂O/ml 500 ml
SSZ30M AOUAMICRON SSZ30M 2.5–3.5 mg H₂O/ml 500 ml

GC-Headspace Solvents – Residual Solvent Testing

These solvents are designed for residual solvent analysis in excipients, APIs, and drug products.

Each batch goes through a controlled GC-HS setup. Organic volatile impurities are monitored carefully. A multi-step purification process helps meet regulatory requirements. Inert gas blanketing protects against oxidation and ensures batch stability. Small packs reduce contamination during lab analysis.

GC-Headspace Product Range:
  • N,N-Dimethylacetamide (DMA)
  • N,N-Dimethylformamide (DMF)
  • Dimethyl sulfoxide (DMSO)
  • N-Methyl-2-Pyrrolidone (NMP)

GC Grade Solvents – Purity for Analytical Accuracy

GC grade solvents are used in impurity profiling, pesticide residue analysis, and polymer testing. Each solvent undergoes controlled analysis for hydrocarbon and halogenated impurities using GC/FID and GC/ECD.

IR and GC methods are used to characterize purity. These solvents match the quality needed for reference standards in GC applications. They also support toxic contaminant testing in environmental and specialty chemical samples.

GC Solvent Range:
  • Acetone, Acetonitrile, Chloroform
  • Cyclohexane, Dichloromethane, Diethyl Ether
  • 1,4-Dioxane, Ethyl Acetate, n-Heptane
  • n-Hexane, Iso-Octane, Isopropyl Alcohol
  • Methanol, n-Pentane, Tert-Butyl Methyl Ether
  • Tetrahydrofuran, Toluene

HPLC Solvents, Buffers, and Ion Pair Reagents

HPLC-grade solvents meet strict laboratory and safety standards. Solvents are filtered through 0.2 micron filters to protect columns and instruments. Peroxide levels are checked in sensitive solvents. You also get options with or without stabilizers.

Ideal for:
  • Protein and peptide analysis
  • Pharmaceutical applications
  • Pesticide residue and polymer testing

Teflon wads are used to stop plasticizer leaching from bottle caps.

Buffers Include:
  • Ammonium acetate, sodium acetate, phosphate salts
  • Sodium bicarbonate and HPLC-grade hydrates
Ion Pair Reagents Include:
  • 1-Butane to 1-Octane sulphonic acid sodium salts
  • Anhydrous and monohydrate forms available
AQUAMICRON – Coulometric Karl Fischer Reagents (for Frit and Fritless Karl Fischer Coulometer)

With Coulometric titration, the sample is added to an electrolytic solution, the main constituents of which are iodide ions, sulphur dioxide, a base and a solvent such as alcohol. Electrolytic oxidation causes the production of iodine, resulting in an immediate Karl Fischer reaction. Coulomteric Karl Fischer is used for moisture estimation in speciality chemicals, refrigerant gases, transformer & lubricant manufacturers, agrichemicals, pharmaceutical API & bulk drug.

Product Features
  • Suitable for < 10 ppm moisture content estimation
  • Reagent with right medium for maximum solubility of sample
  • Stable and consistent result
We offer:
Reagents for Karl Fischer Coulometer with Frit:
Product Code Description Pack Size
AXI AQUAMICRON AXI 500 ml
CXU AQUAMICRON CXU 10 x 5ml ampule/case
Reagent for Fritless Karl Fischer Coulometer:
Product Code Description Pack Size
AXI AQUAMICRON AXI 500 ml

FAQ's

What types of Karl Fischer reagents does Actylis Lab offer?

Actylis Lab offers volumetric reagents and coulometric reagents. Our volumetric version uses anhydrous ingredients in a pyridine-free single solution. We also supply Aquamicron® coulometric reagents from Japan for trace moisture testing

How should Karl Fischer reagent be stored for maximum shelf life?

Keep the reagent in a dry area. Store it in a cool place away from heat. Avoid direct sunlight. Use a sealed container to stop air from getting in. Use metal drums or fiberboard containers with a plastic lining. Keep the reagent away from moisture.

How does Actylis Lab ensure the consistency of Karl Fischer reagent quality?

We use in-house R&D technology for stable volumetric reagents. Each batch is tested for factor consistency and viscosity. The Aquamicron reagents are backed by Mitsubishi Chemical and support ppm-level accuracy .

What packaging options are available for Karl Fischer reagent?

We provide 500 ml and 2×250 ml bottles for volumetric use. Coulometric reagents and water standards come in ampoules or bottles, depending on your needs Actylis Lab Solutions.

Is technical support available for using Karl Fischer reagent?

Yes. Our technical team helps you choose the right reagent and optimize methods. We also share protocols for volumetric and coulometric titrations .

Why choose Actylis Lab for Karl Fischer reagents?

Actylis Lab offers pyridine-free reagents, stable factor formulations, and trusted Aquamicron reagents. We ship quickly from India, provide full documentation (COA/MSDS), and support ppm-level moisture testing across industries .

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