S-flow IV⁺ Kinematic Viscometer

Part Number: S-flow IV⁺

The S‑Flow IV⁺ is a compact, fully automated Houillon-type kinematic viscometer designed for rapid and precise viscosity measurement of Newtonian fluids such as petroleum products, lubricants, biofuels, asphalts, and waxes. It integrates two thermostatically controlled baths (each with two viscometer tubes) and optional Cito Autosampler, enabling high-throughput, unattended operation compliant with ASTM D7279 and correlates to ASTM D445.

                                                
                                                    Fast, High‑Throughput Analysis                                                
                                            
                                                Processes up to 80 samples per hour per bath, with each bath holding two tubes—ideal for busy QC/R&D laboratories.

                                                
                                                    Minimal Sample & Solvent Use                                                
                                            
                                                Requires just 0.3–1 mL of fluid and uses 2–3 mL of solvent per cycle—beneficial for cost, safety, and environmental impact.

                                                
                                                    Exceptional Temperature Control                                                
                                            
                                                Operates between 20 – 120 °C with stability better than ± 0.02 °C, ensuring consistent and reliable viscosity measurements.

                                                
                                                    Integrated VC & Optical Detection                                                
                                            
                                                Features automatic meniscus detection (0.001 s resolution), built‑in viscosity index calculation, and optional dual‑solvent cleaning.

                                                
                                                    Intelligent Interface & Diagnostics                                                
                                            
                                                12″ capacitive touchscreen or PC software enables easy control of warm-up, cleaning, autosampler, and alert notifications (e.g., low solvent, full waste).

                                                
                                                    Modular & Scalable Architecture                                                
                                            
                                                From single-bath to dual-bath configurations, with in-field upgrades for Cito autosampler*, dual solvent systems, duplo mode, external cooling, and more.

Specification	Value
Number of Baths	2 (independent)
Tubes per Bath	2 Houillon tubes each
Measuring Range	0.3 – 3,000 mm²/s @ 40 °C
Temperature Range	20 °C – 120 °C (requires chiller at low range)
Temperature Stability	Better than ± 0.02 °C
Timer Resolution	0.001 seconds
Sample Volume	0.3 – 1.0 mL
Solvent Consumption	2 – 3 mL per cycle
Throughput	Up to 80 samples/hour per bath
Detection Method	Optical, self-calibrating
Cleaning Pump	Integrated automatic cleaning
Dual Solvent Option	Yes (optional)
Duplo Measurement Capability	Yes (optional)
Interface	12″ touchscreen / PC software
Autosampler	Cito Autosampler – modular, field-upgradeable
Dimensions (W×D×H)	40 × 58 × 66 cm
Weight	52 kg
Power Requirement	950 W, 115/240 V, 50/60 Hz
Data Export	USB storage device