Quick Solutions for Urgent Material Testing Needs
Setting up a measurement system requires significant time and cost. However, in many cases during the development of electronic materials and devices, you need reliable data immediately. At such critical moments, our measurement service can be a valuable solution.
Steps for Measurement Service
- Inquiry and Requirement Hearing
We will receive your inquiry and confirm details such as the measurement objectives, requirements, and sample specifications. This step is essential to selecting the appropriate measurement method. - Measurement Proposal
Based on the discussion with you, we will propose the most suitable measurement method, including delivery time and pricing, and provide a quotation. - Order Placement
Please place your order using your company’s standard procedure. - Sample Shipment
Send your samples to us according to the agreed schedule. Shipping costs are to be covered by the sender for both delivery and return. - Measurement Execution
Our experts will carry out the measurement using our in-house equipment. - Report Delivery
We will provide a report summarizing the measurement results in PDF format. The numerical data will also be provided in Excel format. - Billing and Sample Return
After you confirm that the results are acceptable, we will issue an invoice. Samples will be returned upon request.
Sample Shipping Address
EM Labs Inc.
1-4-13 Mizukasadori, Nagata, Kobe, Hyogo 653-0842 Japan
TEL:+81-50-5370-0262
Measurement Examples
Conductivity measurement of copper foil
NEW!
Are you aware of how the surface roughness of copper foil used in PCBs can affect electrical conductivity?
EM labs are capable of evaluating the conductive properties of copper foil not only as a standalone material, but also when laminated onto resin substrates, across a wide frequency range from 10 to 170 GHz.
Conductivity is greatly influenced by surface roughness and exhibits different behaviors depending on the frequency, making evaluation at multiple frequency points — including those within the intended operating band — essential.
We invite you to take advantage of our measurement technology for material selection and performance optimization of your products.

Key Point!
- Capable of evaluating the frequency characteristics of surface conductivity
- Data from 10 to 170 GHz can be obtained by combining split-cylinder and Fabry-Perot resonators
- Evaluation possible even for copper foil with dielectric adhesive attached
Permittivity measurement of powder/liquid
Struggling to measure permittivity of Powders or Liquids?
In fact, by using the appropriate tools and correct procedures, it is possible to obtain highly valuable data even from these materials. If you have given up on measurements or have not been satisfied with the results so far, please consider using EM labs' measurement service. With our extensive expertise and unique measurement technologies, we are fully committed to supporting you in solving your challenges.

Key Point!
- Permittivity can be evaluated for powders and liquids
- Frequency characteristics can be obtained by combining multiple instruments
Temperature dependency measurement
Accurate evaluation of permittivity variations due to temperature is critically important in the design of mmWave applications.
However, this remains a challenging area for measurement. EM labs provide highly reliable data using advanced techniques based on the resonator method.
We support temperature characteristic evaluation for low-dielectric, low-loss materials.
Using a split-cylinder resonator covering 10–80 GHz, permittivity measurements can be conducted across a wide temperature range from −50°C to +150°C. We also offer a proprietary temperature-variable split-cylinder measurement system for purchase (see here for details).
In addition, we have newly launched a contract measurement service for the D-band (110–170 GHz).
By using a Fabry-Perot resonator, temperature-dependent properties can be evaluated up to 90°C, enabling the acquisition of more practical data under conditions close to real operating environments.

Key Point!
- Dielectric properties depend on temperature.
- The degree of change varies significantly depending on the material.
- Evaluation under the environmental conditions in which the material is expected to be used is essential.
Temp & Humidity dependency measurement
Changes in permittivity due to temperature and humidity can be accurately evaluated
Using split-cylinder resonators at 10, 28, and 40 GHz, we can precisely measure the complex permittivity of materials under specified temperature and humidity conditions.
By combining temperature characterization under dry conditions, a more comprehensive analysis of a material’s dependence on both temperature and humidity is possible.
For example, in the case of MPI and LCP, the following differences become clearly apparent:
- MPI: Dielectric loss tangent (tanδ) increases with rising humidity.
- LCP: Dielectric loss tangent increases with rising temperature.
By understanding the response characteristics of each material, you can select the most suitable one for your specific application.
We also offer a Dielectric Property Evaluation System for temperature and humidity dependence, compatible with 10 to 40 GHz.
For more details, please refer to the product page.

Key Point!
- Permittivity depend not only on temperature but also on humidity.
- The degree of variation caused by temperature and humidity differs significantly between materials.
- It is crucial to evaluate materials under the environmental conditions in which they are expected to be used!