AQUAMICRON™ is a high-precision reagent designed for a wide range of moisture measurement applications using the Karl Fischer method. Our comprehensive lineup includes reagents for both coulometric and volumetric titration, as well as certified water standards.
For coulometric titration, we offer combinations of anolyte (e.g., AX etc.) and catholyte (CXU), along with convenient single-solution electrolytes (FLS) that simplify maintenance. For volumetric titration, our portfolio includes traditional pyridine/chloroform-based titrants (SS series), as well as environmentally friendly pyridine-free and chloroform-free alternatives (SS-Z series), complemented by a variety of dehydration solvents tailored to different sample types.
This website provides access to detailed catalog, technical manual, instructional videos, FAQ, and request forms for SDS and COA documentation.

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AQUAMICRON™ Product Lineup

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Coulometric Reagents

There are two types of coulometric reagents: the anolyte (generating solution),which is placed in the anode chamber of the electrolysis cell, and the catholyte (counter electrolyte), which is placed in the cathode chamber. There is also special anolyte for use with ketones, lower carboxylic acids and silicone oils. AQUAMICRON™ can be used in coulometric moisture measurement systems sold by various companies, and it has a worldwide reputation for excellent performance.

Coulometric Reagents　Learn More

 
Product name Use Specification Package
AQUAMICRON™ AXI *AXI [For frit or fritless type cell, equivalent to FLS]
*AXI, AX & AX01[For General-use]
Organic solvents, Inorganic chemicals, Oiles, Petroleum products, Various kind of gases, etc.		 Moisture maximum
0.15 mg/ml		 500mL
AQUAMICRON™ AX
AQUAMICRON™ AX01 100mL
AQUAMICRON™ AS [For Oils]
Naphtha, Gasolone, Diesel oil, Electrical insulation oil, etc.		 Moisture maximum
0.15 mg/ml		 500mL
AQUAMICRON™ AKX [For Ketones]
Ketones. Silicone oils. Low carboxylic acids, etc.		 Moisture maximum
0.15 mg/ml		 500mL
AQUAMICRON™ CXU [Catholyte]
Both AX and AS and AKX available to combine with		 Moisture maximum
0.6 mg/ml		 5mL
x10/case
AQUAMICRON™ FLS [For fritless type cell]
Organic solvents, Inorganic gases, etc.		 Moisture maximum
0.15 mg/ml		 500mL

AQUAMICRON™ AXI/CXU or AX/CXU

Use

General samples

Characteristics
  • Minimal environmental contamination
    Does not include carbon tetrachloride or chloroform
  • Wide range of applications
    Suitable for petroleum products
    Can be used with moisture vaporization method
    (When using AQUAMICRON™ AX or AXI in a moisture vaporization method, replenish the vaporized portion with methanol.)
  • High quality, high performance
    Excellent reputation for accurate moisture measurement and end-point stability
    Approximately 800mg of moisture can be measured per 100mL of AQUAMICRON™ AX or AXI, and approximately 150mg per 5mL of AQUAMICRON™ CXU
  • Easy to use
    These products can be used in the existing coulometric moisture measurement system.

AQUAMICRON™ AS/CXU

Use

General samples

Characteristics
  • Wide range of applications
    Especially suitable for oils, petroleum products
  • High quality, high performance
    Excellent reputation for accurate moisture measurement and end-point stability.
    Approximately 800mg of moisture can be measured per 100mL of AQUAMICRON™ AS, and approximately 150mg per 5mL of AQUAMICRON™ CXU.
  • Easy to use
    These products can be used in the existing coulometric moisture measurement system.

AQUAMICRON™ AKX/CXU

Use

Ketones, lower carboxylic acids, some aldehydes (aromatics)

Characteristics
  • Minimal environmental contamination
    Does not include chloroform or methyl cellosolve
  • Wide range of applications
    Suitable for ketones, lower carboxylic acids and some aldehydes
  • High quality, high performance
    Accurate moisture measurement, good end-point stability
    Approximately 300mg of moisture can be measured per 100ml of AQUAMICRON™ AKX, and approximately 100mg per 5mL of AQUAMICRON™ CXU (when used with AQUAMICRON™ AKX).
  • Easy to use
    These products can be used in the existing coulometric moisture measurement system.

AQUAMICRON™ AXI or FLS

Use

Suitable for alcohols, esters, benzene, toluene, inorganic gases, etc.

Characteristics
  • Easy to use
    AQUAMICRON™ AXI or FLS is a single-solution type reagent. It should be used in single-solution electrolytic cells without diaphragm, fritless type cell.
    Can be used with moisture vaporizati on method(When using AQUAMICRON™ AXI or FLS in a moisture vaporization method, replenish the vaporized portion with methanol.)
  • Easy maintenance
    Ceramic diaphragm is not used, therefore it is easy to maintain electrolytic cell in good condition.
 

Volumetric Reagents

The items required for volumetric titration are a Karl Fischer titrant and methanol or a dehydrated solvent (used to dissolve or disperse the sample). AQUAMICRON™ offers a wide range of products suitable for measuring the moisture content of various samples at every levels. Users can select a solvent that is suitable for the samples based on the following tables.

Volumetric Reagents　Learn More

 

SS-Z Series (pyridine-free and chloroform-free type)

 
Product name Use Specification Package
AQUAMICRON™ Titrant SS-Z 1mg [For General-use]
Low moisture content Samples		 Titer
0.7〜1.2 mg/ml		 500mL
AQUAMICRON™ Titrant SS-Z 3mg [For General-use] Titer
2.5〜3.5 mg/ml		 500mL
1L
AQUAMICRON™ Titrant SS-Z 5mg [For General-use]
High moisture content Samples		 Titer
4.5〜5.5 mg/ml		 500mL
1L
AQUAMICRON™ Solvent GEX [For General-use]
Organic solvents, Inorganic chemicals, Agricultural chemicals, Pharmaceuticals, Fertilizers, Detergents, Foodstuffs, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™ Solvent OLX [For Oils]
Naphtha, Gasolone, Diesel oil, Electrical insulation oil, etc.		 Moisture maximum
0.5 mg/ml		 500mL
AQUAMICRON™ Solvent OLII [For Oils and Fats]
Naphtha, Gasolone, Diesel oil, Heavy oil, Electrical insulation oil, Oils and Fats(Hardened oil, Margarine, etc.),etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™ Solvent KTX [For Ketones]
Ketones, Silicone oils, Acetic and other lower carboxylic acids, aldehydes(except acetaldehydes),etc.		 Moisture maximum
0.5 mg/ml		 500mL
AQUAMICRON™ Solvent SU [For Sugars]
Sugars, Proteins, Gelatine, Additives, Animal feeds, etc.		 Moisture maximum
0.2 mg/ml		 500mL
  • ※When using a moisture vaporization method, mix Solvent GEX with propylene glycol(PG) in a 3:1 ratio (e.g. 90mL of GEX + 30mL of PG).
  • ※When using Solvent KTX, it will be needed to make proper adjustments to the parameters. Please contact a manufacturer of the instruments.
  • ※An addition of 3g of salicylic acid enables the time for dehydration to get shorter at the first measurement in combined use of 50mL of Solvent SU.
 

SS Series (pyridine type)

 
Product name Use Specification Package
AQUAMICRON™
Titrant SS 1mg		 [For General-use]
Low moisture content Samples		 Titer
0.7〜1.2 mg/ml		 500mL
AQUAMICRON™
Titrant SS 3mg		 [For General-use] Titer
2.5〜3.5 mg/ml		 500mL
AQUAMICRON™
Titrant SS 10mg		 [For General-use]
High moisture content Samples		 Titer
8〜12 mg/ml		 500mL
AQUAMICRON™
Solvent ML		 [For General-use]
Organic solvents, Inorganic chemicals, Agricultural chemicals, Pharmaceuticals, Fertilizers, Detergents, Foodstuffs, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™
Solvent MS		 [For General-use]
Organic solvents, Inorganic chemicals, Agricultural chemicals, Pharmaceuticals, Fertilizers, Detergents, Foodstuffs, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™
Solvent CM		 [For Oils]
Naphtha, Gasolone, Diesel oil, Heavy oil, Electrical insulation oil, Oils and Fats(Hardened oil, Margarine, etc.),etc.		 Moisture maximum
0.3 mg/ml		 500mL
AQUAMICRON™
Solvent CP		 [For Ketones]
Ketones, Silicone oils, Acetic and other lower carboxylic acids, aldehydes(except acetaldehydes),Anilines, etc.		 Moisture maximum
0.5 mg/ml		 500mL
AQUAMICRON™
Solvent PP		 [For Aldehydes]
Acetaldehydes, propionaldehydes, Butyraldehydes, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™
Solvent PE		 [For Ketones]
Ketones, Silicone oils, Acetic and other lower carboxylic acids, aldehydes(except acetaldehydes),Anilines, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™
Solvent FM		 [For Sugars]
Sugars, Proteins, Gelatine, Additives, Animal feeds, etc.		 Moisture maximum
0.2 mg/ml		 500mL
AQUAMICRON™
Solvent ME		 [For Vaporizer] Gaseous samples, Nitrogen, etc. Moisture maximum
0.2 mg/ml		 500mL
  • ※When using a moisture vaporization method, mix Solvent MS with propylene glycol(PG) in a 3:1 ratio (e.g. 90mL of MS + 30mL of PG).
  • ※An addition of 3g of salicylic acid enables the time for dehydration to get shorter at the first measurement in combined use of 50mL of Solvent FM.
 

Water Standards

  • Manufactured at Mitsubishi Chemical Co. which have ISO9001 accreditation.
  • According to ISO, GMP, GLP, and FDA guidelines. Traceable to NIST SRM2890.
  • Consist of a solvent with specific composition, and exactly confirmed water content. Supplied with Certificate of Analysis.
  • Packaged in single-use glass ampoules.
  • Long shelf life.

Water Standards　　Learn More

Liquid Water Standard (with Test Certification)
Product name Use Specification Package
For Coulometric Titration AQUAMICRON™
Water Standard 0.1		 For checking the accuracy of the coulometric moisture meter Titer
0.1±0.01mgH2O/g		 5mL
x10/case
AQUAMICRON™
Water Standard 0.2		 For checking the accuracy of the coulometric moisture meter Titer
0.2±0.01mgH2O/g		 5mL
x10/case
AQUAMICRON™
Water Standard 1		 For checking the accuracy of the coulometric moisture meter Titer
1±0.05mgH2O/g		 5mL
x10/case
AQUAMICRON™
Check Solution P		 The end-point adjustment solution can be used with both AX and AKX. It can also be used for day-to-day management of coulometric moisture mesurement systems. Moisture
3.8-4.2mgH2O/g		 100mL
For Volumetric Titration AQUAMICRON™
Water Standard 10		 For determination of Karl Fischer reagents titer Titer
10±0.5mgH2O/g		 8mL
x10/case
AQUAMICRON™
Standard Water/Methanol		 Used to assess titer of Karl Fischer reagents(3-10mgH2O/mL). Also can be used for reverse titration. Moisture
2.0±0.04mgH2O/g		 250mL
For Vaporization Method AQUAMICRON™
Solid Water Standard		 For evaluation a moisture meter with a water vaporizer Moisture
3.83±0.1%		 10g

Inquiries Concerning Products

Karl Fischer Reagents AQUAMICRON™

SDS / COA（Certificate of Analysis）

For pricing and purchases
For moisture meters

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