Jet-Care US Laboratory is awarded American Bureau of Shipping (ABS) Service Supplier status.

Find out more in the News section.

Spectro | Jet-Care launch new sample kits for marine customers

Find out more in the News section and on the Marine Sample Kits page.

Spectro | Jet-Care confirm compliance with new hydraulic fluid sampling requirements of Airbus OIT

Find out more in the news section.

Spectro | Jet-Care Updates regarding Coronavirus (COVID-19)

All our laboratories remain open - please read the latest information in the News Section of our website.


We are specialists in our field and understand the time, safety and maintenance pressures you face. Our comprehensive range of services, including oil, hydraulic fluid, fuel, debris and filter analysis, is tailored to your specific requirements so you always have the resources available when you most need them.


This test determines the kinematic viscosities of liquid petroleum products and hydraulic fluids at 40°C and 100°C.  Significant deviation (+ or - 20%) from the viscosity of the fresh oil reference may indicate a build up of oxidation products due to overheating e.g. contamination with fuel, hydraulic fluid, or water, or the top-up with oil of a different grade or degradation of the oil itself, for example. Thus, the accurate determination of viscosity is essential to many product specifications. With the capacity to determine the kinematic viscosity either manually or fully automated, according to international standards like ASTM D445 as well as in-house methods, viscosity can be monitored to prevent lubrication loss and failures.