
S-flow IV⁺ Kinematic Viscometer



The S-flow IV+ Kinematic Viscometer represents the next generation of Houillon viscosity technology, designed and manufactured by Omnitek in the Netherlands. It combines high accuracy, rapid analysis, and a high degree of automation into a single platform built for modern laboratory environments where throughput, reliability, and ease of use are ongoing operational priorities.
The S-flow IV+ delivers fully automated kinematic viscosity analysis with minimal solvent consumption, addressing one of the more practical concerns in high-volume viscosity testing where reagent costs and waste management can have a meaningful impact on laboratory operating expenses. The system is designed to handle the full measurement cycle with minimal operator involvement, from sample introduction through to results output, reducing the time and attention required from laboratory staff and allowing them to focus on higher-value analytical work.
With its optional autosampler, the S-flow IV+ supports fully unattended operation, allowing laboratories to run extended sample batches without manual intervention between measurements. This capability makes the system well suited to high-throughput environments where samples need to be processed continuously and consistently, including overnight or across shift changes without requiring an operator to be present throughout. For laboratories operating within industrial automation and robotics-driven workflows, the ability to integrate a precise and reliable viscometry instrument that can function autonomously within a broader automated analytical line is a significant practical advantage.
The S-flow IV+ is built around the established Houillon tube principle, which is widely recognised for delivering accurate and reproducible kinematic viscosity measurements across a broad range of sample types and viscosity ranges. For laboratories involved in petroleum product testing, lubricant analysis, base oil quality control, and related industrial fluid testing applications in Australia, the S-flow IV+ offers a dependable, efficient, and highly automated viscometry solution that meets the demands of both routine quality control and more complex analytical workflows.
- Fully automated kinematic viscosity testing with optional autosampler for unattended operation
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Compliant with ASTM D7279 and D2270; correlates with ASTM D445
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Integrated VI (Viscosity Index) calculations
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Two independent temperature-controlled baths (20°C–120°C)
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Dual-solvent and duplo measurement options
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Compact, chemically resistant design with 12” touchscreen interface
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Low sample (0.3–1.0 ml) and solvent (2–3 ml) consumption per cycle
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Real-time monitoring, diagnostic alerts, and integrated cleaning system
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Modular configuration for scalable automation
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Fast and easy tube replacement without draining the bath
Engineered for testing Newtonian samples such as fuels, base oils, formulated lubricants, and petroleum products, the S-flow IV⁺ Kinematic Viscometer provides highly reproducible results in laboratories demanding efficiency and precision. Its versatility makes it ideal for industrial and research facilities, including oil analysis, lubricant development, and production quality control, where automation and accuracy are essential.
The S-flow IV+ Kinematic Viscometer represents the next generation of Houillon viscosity technology, designed and manufactured by Omnitek in the Netherlands. It combines high accuracy, rapid analysis, and a high degree of automation into a single platform built for modern laboratory environments where throughput, reliability, and ease of use are ongoing operational priorities.
The S-flow IV+ delivers fully automated kinematic viscosity analysis with minimal solvent consumption, addressing one of the more practical concerns in high-volume viscosity testing where reagent costs and waste management can have a meaningful impact on laboratory operating expenses. The system is designed to handle the full measurement cycle with minimal operator involvement, from sample introduction through to results output, reducing the time and attention required from laboratory staff and allowing them to focus on higher-value analytical work.
With its optional autosampler, the S-flow IV+ supports fully unattended operation, allowing laboratories to run extended sample batches without manual intervention between measurements. This capability makes the system well suited to high-throughput environments where samples need to be processed continuously and consistently, including overnight or across shift changes without requiring an operator to be present throughout. For laboratories operating within industrial automation and robotics-driven workflows, the ability to integrate a precise and reliable viscometry instrument that can function autonomously within a broader automated analytical line is a significant practical advantage.
The S-flow IV+ is built around the established Houillon tube principle, which is widely recognised for delivering accurate and reproducible kinematic viscosity measurements across a broad range of sample types and viscosity ranges. For laboratories involved in petroleum product testing, lubricant analysis, base oil quality control, and related industrial fluid testing applications in Australia, the S-flow IV+ offers a dependable, efficient, and highly automated viscometry solution that meets the demands of both routine quality control and more complex analytical workflows.
The S-flow IV+ is operated through a multilingual, user-friendly interface accessible via the integrated touchscreen or through optional PC software, giving laboratories the flexibility to choose the control method that best suits their workflow and operator preferences. The advanced software provides comprehensive data management capabilities including result storage, autosampler control, and automatic calibration, reducing the administrative burden on laboratory staff and ensuring that measurement records are consistently maintained and readily accessible. Multiple viscometer systems can be connected and managed from a single PC, making the platform a practical choice for laboratories running several units simultaneously across high-volume testing programs. Data can be exported to USB and integrated with laboratory information management systems, supporting end-to-end workflow automation and ensuring that viscosity results flow seamlessly into broader laboratory data environments without the need for manual transcription. Optional modules extend the system’s capabilities further, supporting autosampler operation, dual-solvent cleaning for efficient sample changeover and contamination prevention, and comprehensive data logging for detailed process control and audit trail requirements. Together these features make the S-flow IV+ a fully capable and highly adaptable viscometry platform for modern laboratories seeking to improve throughput, reduce manual handling, and integrate viscosity analysis effectively within automated industrial and analytical workflows.
| Model | S-flow IV⁺ Kinematic Viscometer |
| Number of baths | 2 (independent temperature control) |
| Viscometers per bath | 2 (total of 4 tubes) |
| Temperature range | 20°C – 120°C* |
| Temperature stability | ±0.02°C |
| Measuring range | 0.3 – 3,000 mm²/s @ 40°C |
| Sample volume | 0.3 – 1.0 ml |
| Solvent consumption | 2 – 3 ml per cycle |
| Throughput | Up to 80 samples per hour** |
| Compliance | ASTM D7279, ASTM D2270 (correlates with ASTM D445) |
| Viscometer type | Houillon (optical, self-calibrating sensor) |
| Time measurement | Automatic, timer resolution 0.001 s |
| Cleaning system | Fully automatic; dual-solvent optional |
| Duplo measurement | Optional integrated dual measurement per injection |
| Cooling system | External cooling circulator optional |
| Display | 12” capacitive touchscreen |
| Autosampler | Optional modular, upgradeable, supports up to 2 instruments (8 tubes) |
| Data export | USB storage device |
| Power requirements | 950 W; 115/240V – 50/60 Hz |
| Dimensions (W x D x H) | 40 x 58 x 66 cm |
| Weight | 52 kg |
| Optional accessories |
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