Koehler Saybolt Viscosity Bath

The Koehler Saybolt Viscometer Bath is designed for measuring the viscosity of lubricants, insulating oils, bitumens, and fuel grades. Complying with ASTM D88, D244, E102, AASHTO T72, and FTM 791-304, this viscometer ensures accurate and repeatable results for industrial and laboratory applications.

Available in two models—the SV3000 standard configuration and the SV4000 with automatic viscosity timing capability—these systems deliver exceptional performance for measuring Saybolt Universal Seconds (SUS) for lubricants, insulating oils, and lighter fuel grades, as well as Saybolt Furol Seconds (SFS) for heavier oils and bituminous materials.

Precision Temperature Control

The bath features microprocessor PID technology, maintaining temperatures from ambient to 240°C with an exceptional stability of ±0.03°C, significantly exceeding ASTM specifications. This ensures compliance with strict ASTM tolerances for reliable viscosity measurements.

This stability is critical for accurate, repeatable Saybolt viscosity measurements across various materials and testing conditions.

The unit’s user-friendly push-button controls and clear dual digital displays allow technicians to easily set and monitor bath temperatures. The Koehler Saybolt viscosity apparatus accommodates all standardised Saybolt viscosity testing requirements across industries.

Automatic Timing for Effortless Testing

The SV4000 model includes an automatic timing sensor (K21404), automatically initiates sample flow, detects the 60ml endpoint, and records efflux time with 0.1s resolution and 0.05% accuracy. This eliminates manual timing errors associated with traditional chain-and-cork methods.

By removing the variables associated with manual timing, the automatic system dramatically improves test consistency and operational efficiency. Laboratories can configure the SV4000 with automatic timing sensors in one to four positions, providing flexibility based on testing needs and throughput requirements.

Multi-Tube Testing Capacity

With four viscometer tubes, labs can run multiple samples simultaneously, significantly improving throughput. The bath accommodates both Universal (SUS) and Furol (SFS) orifices, making it versatile for different oil grades.

Durable & User-Friendly Design

Both the SV3000 and SV4000 Saybolt viscosity baths feature exceptional construction quality. The insulated bath interior is manufactured entirely from heavy-gauge stainless steel, ensuring exceptional heat distribution and long-term durability. A built-in overflow pipe and convenient drain valve simplify bath maintenance, while the chemical-resistant top plate provides superior insulation and easy access for cleaning.

For laboratories conducting tests at near-ambient temperatures, an integrated cooling coil accommodates tap water or refrigerated coolant. The entire system is housed in a sturdy steel cabinet with adjustable levelling feet and a chemical-resistant polyurethane-epoxy finish that stands up to harsh laboratory environments.

• Stainless steel construction resists corrosion.
• Chemical-resistant polyurethane-epoxy finish for long-term durability.
• Sliding draft shields and backlighting enhance sample visibility.
• Easy-to-use push-button controls for seamless operation.

Compliance & Versatility

With capacity for four viscometer tubes and four 60 ml receiving flasks, the Koehler Saybolt viscometer bath maximises laboratory productivity. Sliding draft shields and a specially designed chemical-resistant alignment plate facilitate safe, efficient flask handling. Glare-free fluorescent backlighting enhances sample visibility for precise endpoint detection.

The system accepts both brass and stainless-steel viscometer tubes and interchangeable orifices, accommodating Universal, Furol, and Kansas Road Oil testing configurations. This versatility makes the Koehler Saybolt Viscosity Bath the ideal solution for petroleum testing laboratories, quality control facilities, and research institutions requiring consistent, standards-compliant viscosity measurements.