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Measure specific resistances quickly and accurately
Nittoseiko Analytech's resistivity meters enable highly precise measurement of the specific resistance and electrical resistivity of a wide variety of materials. They are suitable for applications in research and development, quality assurance, and production – wherever reproducible and standardized measurement results are crucial.
The Hiresta-UX, Loresta-GX and Loresta-AX models can be used for both Surface resistance, Volume resistance as well as the electric resistivity Determine precisely. The devices cover a wide range of high-resistance insulators up to low-resistance conductive materials .
Additionally, the PD-600 powder measurement system enables the Conductivity measurement of powders under defined pressureThis allows for the targeted analysis of physical material properties – for example, for battery materials, carbon-based materials, or metallic powders.
All systems support measurements close to standards, including those according to ASTM, ISO and JIS, thus ensuring a high degree of comparability of the results.
For over 40 years, Nittoseiko Analytech's measuring instruments have stood for precise resistance measurement, easy operation and reliable results – both in the laboratory and in industrial applications.
Measuring instruments for measuring specific resistance
Hiresta UX
For measuring semiconductors and non-conductors in high-resistance range of of 103 - 1014 Ω
Loresta GX II
For measuring conductors and semiconductors in low-resistance range of 10-4 - 107 Ω
Loresta FX
Mobile measurements of conductors and semiconductors in low-resistance range of 10-2 to 106 Ω
Powder measuring device – Powder Measuring System PD-600
Powder measuring device PD-600
Determination of the specific resistance of powders under controlled pressure up to 20 kN.
Information on electrical quantities and measurement methods
Every material has a unique specific resistance
Specific electrical quantities are of great importance in industry and technology. They serve the Characterization of different materials and their division into certain categories, such as Insulators, semiconductors or conductors. These sizes are independent of the shape and dimensions of the object in question and therefore describe a clear quality feature.
The Hiresta UX, Loresta-GX II and Loresta-FX devices enable accurate measurement of specific surface resistance and volume resistance.
The Hiresta series serves the high-resistance range (103-1014Ω), the Loresta series the low-resistance (10-4-107Ω). These systems are complemented by the Powder Resistivity System PD-600 for measuring the resistivity of powder.
Volume resistance
The volume resistivity (Ω·cm) is the resistance per unit volume and has various names depending on the scientific application. For example, specific volume resistivity in materials science, specific resistance in electrical engineering, resistivity in physics, etc. This physical quantity is specific to a substance (listed in scientific reference books) and serves as absolute measure of the resistivity of many materials. More on volume resistance >>
Surface resistance
Surface resistance (Ω／□，Ω／sq.), on the other hand, is the resistance per unit area, also known as plate resistance, and is used in the field of coating, insulation, etc.
More on surface resistance >>
4-point and ring electrode measurement methods
These can be determined using two different measuring methods: The 4-point measurement method and Ring electrode measurement method.
Both methods are widely used for object characterization. The four-point measurement method was first described by L.B. Valdes in 1954 for measuring semiconductors. In 1957, his notes were expanded by F.M. Smits with regard to correction factors for determining specific quantities. Subsequently, further additions followed for various special cases (e.g., semicircular patterns).
In these works, highly idealized objects were basically described and measured. Mostly rectangular or circular patterns. The measuring position was preferably in the middle of the sample or in places that allow the electrical quantity to be easily corrected.
The 4-pole or ring electrode measuring head of the measuring devices eliminates line and connector resistances as well as contact resistances. In contrast to the widely used 2-pole measurement, this results in significantly more precise resistance measurements.
Correction factor
For these idealized objects a general correction factor developed with which the specific variables can be determined from the electrical resistance. This correction is necessary because the electric field changes depending on the geometry of the sample or measuring position.
Nittoseiko Analytech's resistivity meters are based on both measurement methods, but with significantly more complex correction factors that allow for the correction of specific parameters on samples of varying dimensions, with freely selectable measurement positions. This enables versatile use in diverse industrial sectors.
Measurements with the Hiresta measuring devices
High-resistance measuring range of 103 - 1014 Ω x cm
Technical filter fabrics
Measurement of the insulating properties of the textile support structure
URS measuring head RMH214
Ceramics
Measuring the electrical insulation capacity of functional ceramics (automotive industry)
UR-SS measuring head RMH215
Coated aluminum / copper plates
Measurement of the insulating coating
URS measuring head RMH214
Silicone Sealant
Measurement of insulating properties
URS measuring head RMH214
Foam panels
Measurement of insulating properties
URS measuring head RMH214 +
RMJ-360 measuring head holder
Plastic parts
Measurement of insulating properties for powder coating (automotive industry)
UA measuring head RMH211
Measurements with the Loresta measuring devices
Low-resistance measuring range of 10-4 - 107 Ω x cm
ABS plastic with aluminum coating
Measurement of electrical resistivity
ASP measuring head
Carbon fiber fabric
Measurement of electrical resistivity
ASP measuring head
Coated aluminum foils
Measurement of electrical resistivity for different coatings
ASP measuring head
Printed conductor tracks
Measurement of the electrical resistivity of printed electronic conductor tracks on textile fabrics
LSP measuring head
PVC compounds
Measurement of electrical resistivity
ASP measuring head
PU adhesive
Measuring the electrical resistivity of a cured polyurethane adhesive
LSP measuring head
Measurements with the powder measuring device PD-600
In conjunction with the Hiresta-UX: measuring range of 103 - 1014 Ω x cm
In conjunction with the Loresta-GX: measuring range of 10-4 - 107 Ω x cm
soot
Measurement with Loresta-GX
Thermoplastic compound
Measurement with Loresta-GX
Dust
Measurement with Hiresta-GX II
graphite
Measurement with Loresta-GX
Insulating foam
Measurement with Loresta-GX
titanium oxide
Measurement with Loresta-GX
silicon carbide
Measurement with Loresta-GX
N&H Technology is the one exclusive representatives from Nittoseiko Analytech im German-speaking countries (DACH), the BENELUX region and Great Britain (UK). Our comprehensive product range offers high-precision resistivity measuring devices that can measure the specific surface and volume resistance as well as the physical properties of powdery substances. With over 40 years of experience, Nittoseiko Analytech stands for first-class quality, easy handling and precise measurement results.
Comprehensive service
Our services include advance presentations and demonstrations of the devices in our laboratory in Willich, Germany, or directly at your site. We offer advice and needs assessments to identify your specific requirements. In addition, we ensure the commissioning and training of the devices on site to ensure a smooth start. We offer maintenance and service contracts to ensure the long-term reliability and performance of your devices. We also carry out the measurement of your materials and powders as a service and provide you with detailed test reports.
Our services:
- Pre-presentation and demonstration in our laboratory in Willich, Germany or directly at your location
- Advice and needs analysisto identify your specific requirements
- Commissioning and training of the devices on site to ensure a smooth start
- Maintenance and service contracts for long-term reliability and performance of your devices
- Measuring your materials and powders as a service, including detailed test reports
Contact Contact us to find out more about our tailor-made services and receive an individual offer.
We measure your sample
We offer you the opportunity to use the measurement of your material samples as a service. Our experienced team ensures that each sample is handled with the utmost care and precision.
For each measurement carried out, you will receive a detailed test report that provides you with detailed information and analyzes of your material samples. This report includes all relevant data and, if desired, can be presented in clear diagrams showing the electrical resistivity depending on the pressing pressure.
The pricing for our service is transparent and is based on the number of samples to be measured. This gives you the opportunity to benefit flexibly and cost-effectively from our high-quality measurement services.
If you are interested, please send us an email info@nh-instruments.de and we will make you an individual offer.
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Frequently asked questions about resistivity meters
A resistivity meter is used to precisely determine the electrical resistance or resistivity of a wide variety of materials. These devices are particularly useful when both surface and volume resistance need to be reliably measured. They are also frequently used to test antistatic materials, coatings, or functional materials as part of quality control and materials development. Precise resistivity measurements therefore play a crucial role, especially in electronics, plastics, and battery research.
Typical applications include material characterization and quality control during production. Furthermore, resistivity meters are also used in the development of antistatic plastics, conductive coatings, and advanced battery materials. Particularly in research and development departments, precise resistance measurements help to reliably analyze material properties, optimize processes, and ensure consistent product quality.
Selecting the appropriate resistivity meter depends primarily on the material being measured and the specific application. While devices like the Hiresta-UX are particularly suitable for highly insulating materials and precise measurements of surface and volume resistance, models such as the Loresta-GX II or the Loresta-AX are mainly used for conductive materials, films, or coatings. Furthermore, specialized systems like the PD-600 are used for powders, battery materials, and specific research applications. Crucial factors include not only the required measuring range but also the material properties, the desired measurement accuracy, and compliance with relevant standards and testing procedures.
In battery research, resistivity meters are used to precisely analyze the electrical properties of electrode materials, coatings, and various powder materials. Accurate resistance and resistivity measurements not only help to evaluate the performance of modern batteries but also to optimize their safety, efficiency, and lifespan. Furthermore, the measurement results support developers and research teams in comparing new materials, improving production processes, and further developing innovative battery technologies.