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Pain Point:
For petrochemical enterprises, lubricant manufacturers, and third-party testing laboratories, kinematic viscosity is one of the most fundamental and critical oil testing parameters — it directly affects oil transport performance, lubrication effectiveness, and atomisation characteristics. However, traditional kinematic viscosity testing presents numerous challenges: significant human error in manual timing — variations in operator reaction time lead to scattered results; cumbersome manual calculation — each test requires manual substitution into formulas, which is time-consuming and error-prone; difficult data management — paper records are easily lost and hard to trace, failing to meet ISO/CNAS requirements for data traceability; low batch testing efficiency — single-station designs cannot handle multiple samples simultaneously, resulting in long testing cycles. How can you achieve efficient, intelligent, and traceable kinematic viscosity determination without compromising accuracy?
Our Solution:
The DFYF-108B Petroleum Products Kinematic Viscosity Tester is strictly designed and manufactured in accordance with GB/T 265 and ASTM D445 standards, suitable for determining the kinematic viscosity of various lubricating oils, fuel oils, crude oils, and chemical liquids. The instrument features a 5-inch true-colour touch screen for smartphone-like ease of operation. Tap "Start" and the instrument automatically begins timing; tap "End" when the test is finished, and the system automatically calculates the kinematic viscosity value and saves it to the history log. A standard USB port allows test data to be exported directly for archiving, analysis, or report generation. The 4-station independent design supports simultaneous testing of multiple samples. The transparent glass bath with a flow straightener ensures a uniform temperature field and clear observation. Temperature control range: ambient to 100°C with accuracy of ±0.1°C.
Customer Value:
You no longer need to tolerate inaccurate timing, tedious calculations, or untraceable data in traditional viscosity testing. The DFYF-108B provides a fully digital viscosity determination solution featuring smart touch control, automatic timing, automatic calculation, USB data export, and 4-station parallel testing — making kinematic viscosity testing more efficient, more accurate, and more intelligent.
Parameter | Value | Why It Matters to You |
Applicable Standards | GB/T 265, ASTM D445 | Dual compliance ensures global acceptance of test results |
Power Supply | AC220V 50Hz | Standard industrial power |
Heating Power | 1500W | Rapid heating to test temperature, minimising waiting time |
Temperature Control Range | Ambient ~ 100°C | Covers common kinematic viscosity test temperatures (40°C, 100°C, etc.) |
Temperature Control Accuracy | ±0.1°C | High precision temperature control ensures accurate and reliable viscosity data |
Number of Test Stations | 4 stations | Enables simultaneous testing of multiple samples or parallel samples, improving batch testing efficiency |
Display | 5 inch true colour TFT touch screen | Original imported high brightness LCD — intuitive and easy to operate |
Timing Method | Automatic timing | Tap "Start" to begin timing automatically — no stopwatch needed |
Calculation Method | Automatic calculation | System automatically calculates kinematic viscosity and saves the result |
Data Interface | USB export | Data can be exported directly to a USB drive for archiving, analysis, or report generation |
Bath Material | Transparent glass bath + acrylic insulation cover | Maintains temperature while providing clear visibility of the capillary viscometer |
Temperature Field Design | Built in flow straightener | Ensures smooth bath fluid circulation and uniform temperature distribution |
Dual-Standard Compliance — Globally Accepted
The instrument is strictly designed and manufactured in accordance with GB/T 265 and ASTM D445 standards. ASTM D445 is the internationally recognised standard for kinematic viscosity testing, while GB/T 265 is the Chinese national standard — the two are technically equivalent. Suitable for determining the kinematic viscosity of various lubricating oils, fuel oils, crude oils, and chemical liquids. Test results are recognised worldwide — export-ready.
5 Inch True-Colour Touch Screen — Easy Operation Like a Smartphone
Equipped with an original imported high brightness LCD and a 5 inch true colour TFT touch screen with an intuitive interface. Parameter setting, starting timing, and result reading are all straightforward — no complex button sequences, greatly reducing the learning curve. Even operators without professional training can become proficient in a short time.
Automatic Timing & Automatic Calculation — No More Stopwatches or Manual Maths
In traditional viscosity testing, operators must hold a stopwatch, record times manually, and substitute values into formulas — each step carrying the risk of human error. The DFYF-108B completely transforms this process: tap "Start" and the instrument automatically begins timing; tap "End" when the test is finished, and the system automatically calculates the kinematic viscosity and saves it to the history log. This eliminates human error and improves both testing efficiency and data reliability.
Data Exportable to USB Drive — Easy Management & Traceability
A standard USB port allows test data to be saved directly to a USB flash drive. Users can archive, analyse, or generate reports on a PC without manual data entry. This feature is particularly valuable for laboratories that need to meet ISO/CNAS requirements for data traceability, making data management more standardised and audits more straightforward.
Four Independent Test Stations — Higher Throughput
The instrument features 4 test stations for simultaneous testing of multiple samples or parallel samples. For refinery quality control laboratories and third party testing organisations handling large sample volumes, the 4-station design significantly shortens testing cycles and improves laboratory efficiency. Each station operates independently without interference.
Transparent Bath + Flow Straightener — Uniform Temperature Field & Clear Observation
The bath uses a transparent glass material with an acrylic insulation cover — providing excellent thermal insulation while allowing clear observation of the capillary viscometer. The built-in flow straightener ensures smooth bath fluid circulation and uniform temperature distribution, maintaining consistent temperature conditions across all stations.
Scenario 1: Lubricant Manufacturer – Batch Quality Control
A major lubricant producer in East China uses the DFYF-108B for kinematic viscosity testing of finished products at both 40°C and 100°C. The 4-station design allows the quality control department to test four samples simultaneously (e.g., different viscosity grades or different batches), significantly reducing batch release time. Operators start the test with one tap on the 5-inch touch screen; the instrument automatically times, calculates, and saves data. After testing, data are exported via USB to generate quality reports. The ±0.1°C temperature accuracy ensures test results closely match those from third party laboratories.
Scenario 2: Third-Party Testing Laboratory – High Volume Commissioned Testing
A national-level oil testing centre in North China receives large numbers of lubricating oil, fuel oil, and crude oil samples for kinematic viscosity testing each month. The DFYF-108B's 4-station independent design and automatic timing/calculation functions significantly increase daily throughput. The USB data export function eliminates manual transcription errors and substantially improves report generation efficiency. The transparent bath allows operators to observe the flow status of samples in the capillary viscometer at any time, ensuring the validity of every data set.
Scenario 3: Power Industry – Turbine Oil/Insulating Oil Viscosity Monitoring
A large power plant uses the DFYF-108B for regular kinematic viscosity monitoring of in-service turbine oils and transformer oils. Changes in kinematic viscosity are an important indicator of oil degradation — by regularly monitoring viscosity at 40°C, maintenance personnel can detect deterioration trends early and develop scientific oil change schedules. The intuitive touch-screen operation enables non-specialists to complete testing quickly, and the USB-exported historical data provide a reliable basis for equipment maintenance decisions.
Scenario 4: Research Institutions – Oil Formulation R&D
A petrochemical research institute uses the DFYF-108B for R&D on new lubricant base oils and additive formulations. Researchers need to precisely determine the kinematic viscosity of different formulation samples at both 40°C and 100°C to evaluate compatibility and performance. The automatic timing and calculation functions enable efficient parallel testing of large numbers of samples, while USB-exported data facilitate in-depth analysis and charting on PCs, accelerating the R&D process.
Category | Details |
Established | Since 1978 – over 45 years of experience in petroleum testing instruments |
Facility Size | 8,000+ m² modern production base in Dalian High-Tech Zone |
R&D Team | 15+ senior engineers specialising in oil analysis equipment |
Annual Capacity | 500+ units of various petroleum testing instruments |
Certifications | ISO 9001:2015 certified; products meet ASTM, ISO, GB/T standards |
Export Markets | Southeast Asia, Middle East, Europe, South America, Africa |
Key Clients | Petrochemical enterprises, lubricant manufacturers, third-party testing centres, power industry |
Custom Services | OEM/ODM support available |
We don't just sell instruments. We provide complete testing solutions with 48-hour technical support response and lifetime remote assistance.
Standard Compliance: Fully conforms to GB/T 265 and ASTM D445 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, using certified viscosity reference standards for full-range calibration
Q1: What is the relationship between ASTM D445 and GB/T 265?
A: ASTM D445 is the internationally recognised standard for kinematic viscosity testing established by ASTM International. GB/T 265 is the Chinese national standard "Determination of Kinematic Viscosity of Petroleum Products and Calculation of Dynamic Viscosity" — the two are technically equivalent. The DFYF-108B fully complies with both standards, making test results mutually recognised worldwide.
Q2: How does the automatic timing and automatic calculation work?
A: After the operator loads the sample into the capillary viscometer and places it in the bath to reach temperature, tapping the "Start" button on the touch screen causes the instrument to automatically begin timing. When the sample meniscus passes the upper and lower marks of the capillary, the operator taps "End", and the system automatically calculates the kinematic viscosity from the flow time and viscometer constant, saving the result to the history log. The entire process requires no stopwatch and no manual calculation, eliminating human error.
Q3: What is the practical value of the USB export function?
A: After testing, users can insert a USB drive and export all historical data with one click. The exported data can be opened on a PC using software such as Excel for archiving, data analysis, and report generation. This feature meets ISO/CNAS requirements for data traceability, making laboratory data management more standardised and efficient.
Q4: Can the 4 stations test four different samples simultaneously?
A: Yes. The 4 test stations operate independently and can test four different samples simultaneously, or perform parallel tests on the same sample. For quality control laboratories with high throughput requirements, this significantly shortens testing cycles and improves efficiency.
Q5: How important is ±0.1°C temperature control accuracy for kinematic viscosity testing?
A: Kinematic viscosity is highly temperature-sensitive — at around 40°C, a 0.1°C temperature change can cause a 0.5%–1% variation in viscosity values. The ±0.1°C accuracy ensures viscosity data accuracy and repeatability, making laboratory results highly consistent across different times and operators.
Q6: What are the advantages of a transparent glass bath over opaque baths?
A: The transparent glass bath allows operators to directly observe the flow status of samples in the capillary viscometer — whether the sample has reached temperature, whether bubbles are present, and whether the meniscus is clearly visible. This information is critical for determining test validity. The acrylic insulation cover maintains temperature while preserving observation clarity.
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 (capillary viscometers, etc.). Lifetime technical support is included.
Per ASTM D445 / GB/T 265, here is the typical procedure for kinematic viscosity testing using the DFYF 108B:
Step | Action | Details |
1 | Sample preparation | Load the oil sample into the capillary viscometer to the specified mark |
2 | Install viscometer | Place the capillary viscometer in the bath test station |
3 | Temperature setting | Set the test temperature (e.g., 40°C, 100°C) via the 5 inch touch screen |
4 | Bath temperature stabilisation | The bath automatically heats to the set temperature with ±0.1°C high precision control; the flow straightener ensures uniform temperature across all stations |
5 | Start timing | Tap the "Start" button on the touch screen — the instrument automatically begins timing |
6 | End timing | When the sample meniscus passes the upper and lower marks of the capillary, tap the "End" button |
7 | Automatic calculation | The system automatically calculates the kinematic viscosity from the flow time and viscometer constant |
8 | Data saving and export | Results are automatically saved to the history log and can be exported with one click via USB |
5 inch touch screen for one tap operation; automatic timing, automatic calculation, automatic saving; USB export meets data traceability requirements.
You Need | DFYF-108B Delivers |
Standard compliance | GB/T 265, ASTM D445 — recognised globally |
Temperature accuracy | ±0.1°C — ensures accurate and reliable viscosity data |
Operation | 5 inch touch screen — smartphone like ease of use |
Timing method | Automatic timing — no stopwatch needed |
Calculation method | Automatic calculation — no manual maths |
Test stations | 4 stations — supports batch testing |
Data management | USB export — meets ISO/CNAS traceability requirements |
Temperature field design | Transparent bath + flow straightener — uniform and clearly observable |
After sales support | 12 month warranty + lifetime remote support |
Trust | Established 1978, ISO 9001 certified |
Dalian Analytical Instrument Factory
Carlos Zhang (Overseas Sales Manager)
�� Tel / WhatsApp / WeChat: +86 18740265556
�� Email: 54639288@qq.com
�� Website: https://www.analyzer-dfy.com
�� Address: 1-1, No.107 Guangxian Road, High-Tech Zone, Dalian, Liaoning, China (Zip code: 116023)
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