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Pain Point:
For turbine oil, hydraulic oil, and synthetic fluid suppliers, water contamination is inevitable during storage, transportation, or operation. But the real problem is not just the water itself—it's how quickly your oil can separate from water. If demulsibility is poor, water remains emulsified in the oil, leading to accelerated equipment wear, rust formation, reduced lubricity, and unexpected downtime. How can you prove your oil's water separation capability meets industry standards before it reaches your customer?
Our Solution:
The DFYF-124 Water Separation Performance Tester allows you to quantify your oil's demulsibility with precision. Following GB/T 7305 or ASTM D1402, you mix 40mL of oil sample with 40mL of distilled water in a graduated cylinder, stir at 54°C or 82°C for exactly 5 minutes, and record the time required for complete emulsion separation. The result gives you objective, repeatable data on your product's water separation performance.
Customer Value:
You no longer ship oil with "unknown" demulsibility. You provide documented proof that your product separates water quickly and completely. This reduces customer complaints, prevents equipment failures caused by poor water separation, and strengthens your reputation as a quality supplier.
Parameter | Value | Why It Matters to You |
Power Supply | AC220V ± 10%, 50Hz | Reliable operation under industrial voltage variations |
Heating Power | 1000W | Fast heat-up to test temperature, minimizing waiting time |
Temperature Range | Room temp ~ 99.9°C | Covers standard test temperatures (54°C and 82°C) and custom requirements |
Temperature Accuracy | ±0.1°C | Ensures test repeatability and full compliance with ASTM/GB standards |
Stirring Speed | 1500 ± 15 r/min (adjustable) | Precisely controlled mixing; adjustable for R&D applications |
Test Configuration | Rotary 4-station (sequential testing) | One operator can run multiple samples in sequence, efficient lab workflow |
Ambient Temperature | Room temp ~ 35°C | Suitable for most laboratory environments |
Relative Humidity | ≤85% | Reliable operation in humid conditions |
Weight | ~23 kg | Compact benchtop design, easy to move and store |
Applicable Standards | GB/T 7305, ASTM D1402 | Globally recognized methods for demulsibility testing |
Automatic Timing with Stop Function
The instrument features a timed automatic stop function. When the 5-minute stirring cycle completes, the stirrer stops automatically. No need for manual timing or supervision.
Precision Temperature Control
Digital temperature controller maintains bath temperature within ±0.1°C. Accurate temperature is critical for demulsibility testing—even small deviations can affect results.
Built-in Timing Alarm
The alarm notifies you exactly when stirring stops and when standing periods (30 min or 60 min) are complete. This ensures accurate measurement of separation time and reduces operator error.
Automatic Stirrer Lift
The stirrer is equipped with an automatic lift switch for raising and lowering. No manual handling required, improving operator safety and test consistency.
Adjustable Stirring Speed
While standard test speed is 1500±15 r/min, the speed is adjustable. This feature is particularly valuable for R&D labs developing new formulations or testing unconventional fluids.
Rotary 4-Station Design
Unlike single-station testers, the DFYF-124 uses a rotary 4-hole turntable. You can prepare multiple samples and run them sequentially, maximizing lab efficiency without requiring multiple instruments.
Scenario 1: Turbine Oil Manufacturer – Quality Control
A turbine oil producer in the United States uses the DFYF-124 to test every batch before shipment. Following ASTM D1402 at 54°C, they verify that each batch separates water within the required time. Result: Customer complaints related to oil emulsification dropped by 40% in six months.
Scenario 2: Hydraulic Fluid Lab – Formulation Development
An R&D laboratory in Japan is developing a new biodegradable hydraulic fluid. Using the DFYF-124's adjustable stirring speed feature, they test multiple formulations to identify which additive package provides the fastest water separation. The instrument's precision allows them to compare results with high confidence.
Scenario 3: Third-Party Testing Center – High-Volume Testing
A certified testing laboratory in Saudi Arabia processes over 200 oil samples per month. The DFYF-124's rotary 4-station design allows their technicians to prepare samples in parallel and run them sequentially, increasing throughput by 50% compared to their old single-station tester.
Scenario 4: Marine Lubricant Supplier – 82°C Testing
A marine lubricant supplier in Greece tests oils used in ship engines where operating temperatures are higher. Using the DFYF-124 at 82°C (the higher temperature option per ASTM D1402), they ensure their products perform reliably in real-world conditions.
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 specializing 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 | National petrochemical labs, third-party testing centers, university research labs, oil refineries |
*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 ASTM D1402 and GB/T 7305
CE Marking: Available upon request (certificate number can be provided)
Calibration Certificate: Each unit comes with a factory calibration report traceable to national standards
Q1: What is the difference between ASTM D1402 and GB/T 7305?
A: The two standards are technically equivalent. GB/T 7305 is the Chinese national standard adapted from ASTM D1402. Both use the same test method: 40mL oil + 40mL water, stirred at specified temperatures for 5 minutes. The DFYF-124 fully complies with both.
Q2: What are the test temperatures?
A: Per ASTM D1402 and GB/T 7305, low-viscosity oils are tested at 54°C ± 1°C, while high-viscosity oils are tested at 82°C ± 1°C. The DFYF-124 covers the full range from room temperature to 99.9°C.
Q3: How long does a complete test take?
A: The stirring phase is exactly 5 minutes. After stirring, you observe separation. If complete separation occurs quickly, the test may take 10-15 minutes. If separation is slow, you wait up to 30 or 60 minutes per the standard. The instrument's alarm notifies you at each key moment.
Q4: Can I run multiple samples at the same time?
A: The DFYF-124 uses a rotary 4-station design. Samples are run sequentially, not simultaneously. This allows one operator to prepare multiple samples and run them one after another, maximizing efficiency without requiring multiple bath assemblies.
Q5: 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.
Q6: Do you provide installation and training?
A: Yes. We provide an English user manual and installation video. Remote technical support is available 24/7 via WhatsApp, WeChat, or email. On-site training can be arranged for bulk orders.
Q7: What is your warranty policy?
A: 12 months from the date of shipment, excluding consumables (test tubes, stirrers, etc.). Lifetime technical support is included.
Q8: Can I adjust the stirring speed for R&D purposes?
A: Yes. While the standard test requires 1500±15 r/min, the DFYF-124 allows speed adjustment. This is particularly useful for formulation development and research applications.
Per ASTM D1402 / GB/T 7305, here is exactly how the DFYF-124 performs the test:
Step | Action | Details |
1 | Sample preparation | Measure 40mL of oil sample and 40mL of distilled water into a graduated cylinder |
2 | Temperature setup | Set bath to 54°C (low-viscosity oils) or 82°C (high-viscosity oils) |
3 | Stirring | Insert stirrer and stir at 1500±15 r/min for exactly 5 minutes |
4 | Observation | Stop stirring and start timing. Record time when emulsion separates completely |
5 | Final measurement | After 30 or 60 minutes (if separation incomplete), measure oil layer, water layer, and emulsion layer volumes |
You Need | DFYF-124 Delivers |
Standard compliance | ASTM D1402, GB/T 7305 |
Test accuracy | ±0.1°C temperature control, 1500±15 r/min stirring |
Operational convenience | Automatic stirrer lift, timed stop, alarm notification |
Lab efficiency | Rotary 4-station sequential testing |
R&D flexibility | Adjustable stirring speed for formulation development |
After-sales support | 12-month warranty + lifetime remote support |
Trust | Factory direct since 1978, ISO 9001 certified |
Dalian Analytical Instrument Factory
Carlos Zhang (Overseas Sales Manager)
�� Tel / WhatsApp / WeChat: +86 18740265556
�� Email: 54639288@qq.com
�� Address: 1-1, No.107 Guangxian Road, High-Tech Zone, Dalian, Liaoning, China (Zip code: 116023)
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