DFYF-105 Copper Strip Corrosion Tester for Petroleum Products (4-Hole, Ambient to 100°C, ±1°C, Compliant with GB/T 5096 / ASTM D130)

DFYF-105 Copper Strip Corrosion Tester for Petroleum Products (4-Hole, Ambient to 100°C, ±1°C, Compliant with GB/T 5096 / ASTM D130)

1. Customer Pain Point + Solution

Pain Point:

For petroleum refineries, oil traders, and third-party testing laboratories, copper strip corrosion is a critical indicator for evaluating the corrosive tendency of petroleum products to metals, directly affecting the safety of oil storage, transportation, and application. Gasoline, kerosene, diesel, lubricating oils, and other products containing corrosive substances (such as active sulfides, acidic compounds, etc.) can corrode pipelines, storage tanks, and engine components during storage and transport, leading to safety hazards and economic losses. However, traditional copper strip corrosion testing presents numerous challenges: insufficient temperature control accuracy — bath temperature fluctuations directly affect the corrosion rating; manual timing dependence — relying on external stopwatches or manual timing introduces human errors; low sample throughput — only a few samples can be tested at a time, resulting in long batch testing cycles; poor equipment corrosion resistance — ordinary bath materials are prone to rusting after prolonged contact with oils and humid environments, affecting equipment life and test accuracy. How can you perform copper strip corrosion testing for petroleum products efficiently and accurately in the laboratory?

Our Solution:

The DFYF-105 Copper Strip Corrosion Tester for Petroleum Products is strictly designed and manufactured in accordance with GB/T 5096 Test Method for Copper Strip Corrosion of Petroleum Products and ASTM D130 Standard Test Method for Copper Strip Corrosion by Petroleum Products. The instrument features an imported precision digital temperature controller, with a temperature range from ambient to 100°C and accuracy of ±1°C. The bath is constructed of high-quality stainless steel, offering excellent corrosion resistance and aging resistance. The standard unit comes with 4 sample holes, and with adapters or different test tube racks, it can test 4 to 12 samples simultaneously. The instrument is equipped with a built-in digital timer with clear time display — no external stopwatch needed, simple preset operation. The compact design occupies minimal bench space, suitable for placement in fume hoods or on standard laboratory benches.

Customer Value:

You no longer need to tolerate unstable temperature control, unreliable timing, low efficiency, or corrosion-prone equipment in traditional copper strip corrosion testing. The DFYF-105 provides a comprehensive solution featuring ±1°C high-precision temperature control with imported controller, built-in digital timer, flexible 4–12 sample support, and a full stainless steel corrosion-resistant bath — making your copper strip corrosion testing for petroleum products more accurate, more compliant, and more efficient.

2. Technical Parameters Table

3. Product Highlights

Strict Compliance with International Standards – GB/T 5096 & ASTM D130
The instrument is fully designed and manufactured in accordance with GB/T 5096 Test Method for Copper Strip Corrosion of Petroleum Products and ASTM D130 Standard Test Method for Copper Strip Corrosion by Petroleum Products. GB/T 5096 is the primary corrosion test method for industrial lubricating oils and is technically equivalent to ASTM D130-83. It can be directly used for determining the copper strip corrosion rating of automotive gasoline, aviation gasoline, jet fuels, solvent oils, kerosene, diesel, distillate fuel oils, lubricating oils, and other petroleum products. Test results are internationally recognised — export-ready.

High-Precision Intelligent Temperature Control – Imported Controller, ±1°C Accuracy
Equipped with an imported precision digital temperature controller, the instrument offers a temperature range from ambient to 100°C with accuracy of ±1°C. The bath temperature is stable and reliable, ensuring repeatability and reproducibility of test conditions. The 1600W heating power ensures rapid heating to the set temperature, reducing waiting time. For copper strip corrosion testing, precise temperature control directly affects the corrosion rating — the ±1°C accuracy ensures that test data are highly consistent across different batches and operators.

Built-in Digital Timer – No External Stopwatch, Convenient Operation
The instrument features an integrated digital timer with clear and direct time display. No external stopwatch or manual timing is required — simply set and start, streamlining the test procedure and effectively eliminating human timing errors. At the end of the test, operators can precisely determine the test duration, ensuring that every data set is obtained under the time conditions specified in the standard.

Corrosion-Resistant Stainless Steel Bath – Durable and Long-Lasting
The heater and all wetted components in the bath are constructed of high-quality stainless steel, offering excellent corrosion resistance and aging resistance. No rusting even after prolonged contact with oils and humid environments, making it particularly suitable for frequent use in petroleum testing laboratories. Compared to ordinary bath materials, the stainless steel bath significantly extends equipment service life and reduces long-term maintenance costs.

Flexible Multi-Sample Support – 4 to 12 Samples Simultaneously
The standard unit comes with 4 sample holes. With adapters or different test tube racks, it can test 4 to 12 samples simultaneously. For refinery quality control laboratories and third-party testing organisations handling large sample volumes, this design greatly increases throughput, shortens testing cycles, and reduces cost per test.

Compact Design Saves Space
The instrument features a compact structure and small footprint, suitable for placement in fume hoods or on standard laboratory benches. For quality control laboratories with limited space, the DFYF-105's compact design enables flexible deployment without occupying excessive bench space.

4. Application Scenarios

Scenario 1: Petroleum Refinery – Quality Control of Gasoline/Diesel/Kerosene
A major refinery in East China uses the DFYF-105 for copper strip corrosion testing on every batch of gasoline, diesel, and kerosene before release. Following GB/T 5096, polished copper strips are immersed in oil samples and heated at 50°C for 3 hours. After the test period, the strips are removed, washed, and compared with the corrosion standard colour chart to determine the corrosion rating. The imported temperature controller's ±1°C accuracy ensures consistent test conditions across batches, while the 4-hole design allows the quality control department to process multiple samples simultaneously, significantly increasing daily throughput. Test results serve as the basis for product release.

Scenario 2: Oil Trading and Storage – Corrosion Assessment Prior to Transportation
A company engaged in fuel oil and solvent oil trading uses the DFYF-105 for copper strip corrosion testing on every batch of incoming and outgoing oil. Strictly following ASTM D130 ensures test results are consistent with those from overseas clients and inspection bodies. The full stainless steel bath remains clean and corrosion-free even after frequent testing, and the built-in digital timer eliminates the need for additional stopwatches, simplifying the operation process. Copper strip corrosion rating data serve as an important component of product quality documentation, providing technical assurance for trade fairness.

Scenario 3: Third-Party Testing Laboratory – High-Volume Commissioned Testing
A national-level oil testing centre in North China receives large numbers of gasoline, kerosene, diesel, and lubricating oil samples for copper strip corrosion testing each month. The DFYF-105's 4–12 hole flexible sample capacity allows the laboratory to configure test tube racks according to daily sample volume, maximising testing efficiency. The stability of the imported temperature controller and the durability of the full stainless steel bath ensure consistent performance even after long-term continuous operation. The data consistency and traceability of test reports have earned recognition from CNAS assessors.

Scenario 4: Aviation Fuel Testing Laboratory – Jet Fuel Corrosivity Testing
An aviation fuel testing laboratory uses the DFYF-105 for copper strip corrosion testing of jet fuels. The corrosion requirements for jet fuel are extremely stringent — any sign of corrosion could lead to fuel system failures in aircraft engines. The DFYF-105's ±1°C temperature control accuracy and standard compliance ensure the authority of every test report, providing solid assurance for the safe use of aviation fuels.

5. Company Strength – Dalian Analytical Instrument Factory

We don't just sell instruments. We provide complete testing solutions with 48-hour technical support response and lifetime remote assistance.

6. Certification & Compliance

Standard Compliance: Fully conforms to GB/T 5096 and ASTM D130 standards

CE Marking: Available upon request (certificate number can be provided)

Calibration Certificate: Each unit comes with a factory calibration report traceable to national standards

7. FAQ – Frequently Asked Questions

Q1: What is the relationship between GB/T 5096 and ASTM D130?
A: GB/T 5096 is the Chinese national standard "Test Method for Copper Strip Corrosion of Petroleum Products", and ASTM D130 is the ASTM International standard "Standard Test Method for Copper Strip Corrosion by Petroleum Products". The two are technically equivalent. GB/T 5096 is the primary corrosion test method for industrial lubricating oils and is equivalent to ASTM D130-83. The DFYF-105 fully complies with both standards, making test results mutually recognised worldwide.

Q2: What is the principle of the copper strip corrosion test?
A: A polished copper strip is immersed in a measured quantity of the sample and heated to a specified temperature (e.g., 50°C, 100°C) as required by the product standard for a specified period. At the end of the test period, the copper strip is removed, washed, and compared with the corrosion standard colour chart to determine the corrosion rating. The copper strip corrosion rating directly reflects the presence of corrosive substances (such as active sulfides, acidic compounds, etc.) in the oil.

Q3: How important is ±1°C temperature control accuracy for copper strip corrosion testing?
A: In copper strip corrosion testing, temperature directly affects the reaction rate between the copper strip and corrosive substances in the oil. Temperature deviations from standard requirements can result in lighter or heavier corrosion, affecting accurate corrosion rating. The ±1°C accuracy ensures that testing is conducted under the temperature conditions specified in the standard, with data that are truly reliable and comparable across different laboratories.

Q4: How many samples can be tested simultaneously with the 4 sample holes?
A: The standard unit comes with 4 sample holes. With adapters or different test tube racks, it can test 4 to 12 samples simultaneously. Users can flexibly choose test tube rack configurations based on daily sample volume and testing standards requirements, maximising testing efficiency without compromising accuracy.

Q5: What are the advantages of a stainless steel bath over ordinary bath materials?
A: In copper strip corrosion testing, the bath is in prolonged contact with oils and humid environments. Ordinary bath materials are prone to corrosion and rusting, affecting equipment life and bath temperature uniformity. The stainless steel bath offers excellent corrosion resistance and aging resistance, remaining rust-free even after long-term use, ensuring uniform and stable bath temperature while significantly extending equipment service life and reducing long-term maintenance costs.

Q6: What are the advantages of a built-in digital timer over an external stopwatch?
A: External stopwatches or manual timing are subject to human reaction time differences, forgetting to time, and other human errors. The built-in digital timer is integrated into the instrument — simply set and start, with automatic alarm at the end of the test. This streamlines the operation procedure and effectively eliminates human timing errors, ensuring that every data set is obtained under the time conditions specified in the standard.

Q7: What is your delivery time?
A: Standard delivery is 20–25 working days after order confirmation. For urgent needs, please contact us to check current stock.

Q8: What is your warranty policy?
A: 12 months from the date of shipment, excluding consumables (copper strips, polishing materials, etc.). Lifetime technical support is included.

8. Test Method Overview – Building Trust Through Transparency

Per GB/T 5096 / ASTM D130, here is the typical procedure for copper strip corrosion testing using the DFYF-105:

Imported temperature controller with ±1°C accuracy ensures stable and reliable bath temperature; built-in digital timer eliminates need for external stopwatch; 4–12 hole flexible sample support increases batch testing efficiency.

Summary for Decision Makers

Contact Us

Dalian Analytical Instrument Factory
Carlos Zhang (Overseas Sales Manager)

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