Karl-Fischer sample feeding systems

Your advantages

Conformity: to the relevant standard procedures of the Karl Fischer regulation

Customized systems: put together your Karl Fischer measuring system according to your requirements

Over 25 years of experience: the manufacturer Nittoseiko (formerly Mitsubishi) has been a leader in Karl Fischer titration for over 25 years

Possible samples: organic and inorganic solids, liquids, gases, liquid gases and viscous samples

A wide range of applications: for example in the pharmaceutical industry, petrochemicals, energy, chemicals, food, food supplements, agriculture and wherever moisture occurs

Resource protection

Designed for longevity: robust workmanship, clear & simple handling, service and spare parts.

One example of the longevity of our products is the TOX-100 analyzer, which we sold from 1997 to 2013. Around 80% of these analyzers are still in use today – and are repaired, maintained and supplied with spare parts.

Sustainability: Compatibility with Karl Fischer measuring systems, reagent changers, burettes and additional measuring channels

Cost efficiency: offers options for high-throughput automation

Our service for you

Comprehensive training: we take over the induction of your employees

Also there for you after the purchase: many questions only arise during work. We are here to answer all your questions about the device and your measurement

Full compatibility: with all Nittoseiko vaporizers

Unique: Karl Fischer measuring devices, sample introduction systems and reagents from a single source

Systems

The ideal Karl Fischer sample injection system for every sample

Depending on the type of sample, direct injection into a Karl Fischer cell can lead to side reactions with the chemicals used there (Karl Fischer reagents).

Our various vaporizers are designed for different sample types, enabling the measurement of complex samples without side reactions. Solid, liquid, gaseous and LPG samples can be processed:

VA-210: Manual vaporizer with oil bath
VA-230: Manual vaporizer (vessels)
VA-236S: Automatic vaporizer (vessels)
VA-300: Manual vaporizer with boat
VG-200: Gas injector

We also offer an autosampler for particularly high sample throughput:
AquaFAST: Karl Fischer autosampler for high sample throughput

VA-210: Manual evaporator with oil bath

VA-210 is the perfect solution for sample introduction of oils, lubricants, greases according to (ASTM D6303 sec 13), waxes and some specialty chemicals.

Key data for VA-210:

Temperature range 70 – 199 °C
Sample quantity up to 50 g
Lower measuring range limit: 5 ppm
Cost-efficient operation, no consumables for vials
Measurement using temperature ramps to easily determine the optimum temperature for unknown samples

VA-230: Manual vaporizer (vessels)

VA-230 is a manual sample feeding system for solids and powders using vials. The residual moisture can also be mobilized from oil samples using this method.

Key data for VA-230:

Temperature range 70 – 300 °C
Sample quantity up to 10 g or 2.5 ml
Measuring range from 20 ppm to 100 %
Measurement using temperature ramps to easily determine the optimum temperature for unknown samples

VA-236S: Automatic vaporizer (vessels)

VA-236S is an automated solution for the Karl Fischer analysis of solids and liquids using vessels.

Key data for VA-236S:

36 sample positions
Temperature range 70 – 300 °C
Sample quantity up to 10 g or 2.5 ml
Measuring range from 20 ppm to 100 %
Measurement using temperature ramps to easily determine the optimum temperature for unknown samples

VA-300: Manual vaporizer with boat

VA-300 is a sample introduction system for solids and powders such as plastics, rubber, food, pharmaceuticals, etc.

Key data for VA-300:

Temperature range 70 – 300 °C
Sample types: polymers, powder, food, oils
Sample quantity up to 10 g
Cost-efficient operation, boot-based, therefore no consumables for sample vials
Measurement using temperature ramps to easily determine the optimum temperature for unknown samples

VG-200: Gas injector

VG-200 is a gas injection system for Karl Fischer analyzers. The VG-200 is your ideal injector for propane, butane and other liquefied gases and is also suitable for many other gases. It doses a predetermined mass or volume of gas or liquefied gas directly from the gas bomb. VG-200 has an adjustable vaporization temperature so that the sample is completely vaporized and cooling of the measuring cell is prevented. The built-in mass flow controller enables results with significantly higher reproducibility compared to manual sampling tasks.

Key data for VG-200:

Injection rates from 100 to 600 ml/min
Unattended operation during measurement
Safe working environment
Automatic measurement of multiple replicas
Setting of gas factors according to the sample type

AquaFAST: Karl Fischer autosampler for high sample throughput

The unique AquaFAST system can perform automated moisture analysis of solids by methanol extraction, liquids by direct injection and oils either by injection or with the aid of an oil evaporator using Karl Fischer titration. With up to 432 samples per run, the AquaFAST is unrivaled in the field of automated high-throughput Karl Fischer analysis.

Key data for AquaFAST:

Automated analysis of up to 432 liquid samples
Lower costs for reagents and sample tubes
Automatic reagent change
Optional methanol extraction and sample shaker for solids
Simultaneous density determination eliminates the need to weigh liquid samples
Typical detection of 5 ppm – 100% humidity
Complete PC control with LIMS import/export function and Excel reporter
Sample types: Petrochemical fuels and biofuels, Solvents, Light oils, Vegetable oils/greases, Biological samples, Transformer oils or other engine oils

Application

Applications

Karl Fischer titration is used to measure the residual moisture in organic and inorganic solids, liquids, gases, liquid gases and viscous samples.

Some sample examples are:

Organic compounds:

Hydrocarbons
Halogenated hydrocarbons
Alcohols
Ether
Phenols
Ketones
Aldehydes
organic acids
Ester
organic acid salts
organic hydrates
Amines
Amide
Anilide
Nitrile
Cyanohydrine
Hydrazine
Acid anhydrides
Acid chlorides
Quinone
Peroxides
Sulphur compounds

Inorganic compounds:

Metals and simple substances
inorganic acids
Hydroxides
Oxides
Halides
Carbonates
Bicarbonates
Sulfates
Sulfites
inorganic gases

Industrial products:

Fertilizer
Agricultural chemicals
Glass/ceramic
Liquid gases
Coals
Tars
Petroleum products
Plastics
Rubber
Rubber products
Additives
fibers
Papers
Dye intermediates
Pigments
Colors
Printing inks and image materials
Adhesives
Soaps and detergents
Cosmetics
Chemicals and materials for electronic devices and electrical parts

Food:

Food additives and flavorings
Cereals and dried vegetables
Sugar and spices
Confectionery
Dairy products
Fat products
Gourmet food

Pharmaceutical products:

Biochemical products
Pharmaceuticals
Chinese herbal medicine
biological tissue

Minerals and natural products:

Minerals
Natural products

Measuring method

Parameters

Karl-Fischer residual moisture

Measuring method

VA-210: Dissolving and heating the sample in a base-oil, mobilization and transfer of the water into the measuring cell by means of carrier gas
VA-230: Heating of the manually inserted sample vessel, mobilization of the water, transfer of the water via carrier gas into the measuring cell
VA-236S: Heating of the automatically inserted sample vessel, mobilization of the water, transfer of the water via carrier gas into the measuring cell
VA-300: Heating of the sample boat, mobilization of the water, transfer of the water via carrier gas into the measuring cell
VG-200: Feeding of the gas, LPG or LNG, vaporization of the sample, dosed sample feeding into the measuring cell

Standard methods

The Karl Fischer sample introduction systems conform to the following standard procedures of Karl Fischer determination:

ASTM D6304, IEC 60814, ISO 7335, ISO 15512

FAQ

What different vaporizers are there?

VA-210: Manual vaporizer with oil bath
VA-230: Manual vaporizer (vessels)
VA-236S: Automatic vaporizer (vessels)
VA-300: Manual vaporizer with boat
VG-200: Gas injector

Is there an autosampler for the Karl Fischer measuring devices?

Yes, our AquaFAST is a Karl Fischer autosampler for high sample throughput.

Can I view and test the systems before I buy them?

Of course, we will be happy to come to you and show you our systems so that you can get to know the technology.

Can I also buy the reagents from a1?

Yes, we offer a wide range of Aquamicron reagents.

I have never worked with the device before. How can I learn how to work with the sample feeding systems?

Once your sample feeding system has been installed, our service team will be available to provide you with detailed product training. Most questions will arise as you work, so we will also be able to help you with any questions that arise at a later date – at your premises or flexibly via an online meeting.

Which standard does the measuring method comply with?

The Karl Fischer sample introduction systems conform to the following standard procedures of Karl Fischer determination:

ASTM D6304, IEC 60814, ISO 7335, ISO 15512

Analysis systems

Containment systems

PFAS measurement with AQF-5000

Karl-Fischer sample feeding systems

Sample feeding and evaporation systems for Karl Fischer moisture analyzers

Your advantages

Resource protection

Our service for you

Systems

Application

Measuring method

FAQ

Advice and contact

Consulting process

Get advice now - Contact us

Products

Industries

Service

The company

Termine 2025

Dates 2025