Viscosity Index Tester

The viscosity index tester measures the kinematic viscosity of oil at 40℃ and 100℃, and calculates the viscosity index using a standard formula. This value reflects the degree to which the viscosity of the oil changes with temperature and is used for lubricant formulation adjustments and quality control.
Selection
When selecting, consider the compatibility of the sample type with the standards. The temperature control accuracy should reach ±0.01℃. The automatic cleaning function can reduce cross-contamination. The data interface must be compatible with existing systems, and the operation interface should align with the user habits of personnel.

Terms

Standards

Instruments

Measurement accuracy of refractive index is +/- 0.0002nD, Measurement range is 3000-1.7000 nD, base is made of stainless steel, prism is made of hard Glass.

$ 420.00

Measurement refractive index range 3000-1.7000, accuracy of +/- 0.0002, can be connected to Thermostat determination of 0 ℃ -70 ℃ refractive index, support sugar concentration 0-95% measurement, resolution 0.0005, suitable for Optical Property Analysis of various substances.

$ 428.00

Using 6-bit OLED LCD display, refractive index Measurement range 1.30000-1.72000nD, sugar content range 0-95% Brix, built-in lithium battery supports 72 hours of continuous work, compact and easy to carry.

$ 1364.00

Using CRI = 98 high color rendering index Illuminant, with Illuminant Timer, all metal structure, inclined table design, uniform lighting, suitable for reflection manuscript observation.

$ 1203.00

Using refraction principle design, 3 seconds fast display results, automatic temperature compensation function, use more than 10000 times, sugar Measurement range 0~ 35%, refractive index Measurement range 1.3330~ 1.3900.

$ 251.00

Equipped with high-performance linear CCD and sapphire prism, refractive index Measurement range 1.3000~ 1.7000nD, accuracy +/- 0.0002, support transparent to viscous liquid rapid detection.

$ 3688.00

Using refraction principle design, compact and portable can be put into the pocket, LCD large screen 3 seconds fast display, automatic temperature compensation, use of more than 10000 times, sugar Measurement range 0~ 85%, refractive index range 1.3300~ 1.5100.

$ 251.00

With 5000V output voltage and 1000GΩ Measurement range, it supports polarization index testing and USB data transmission, and the backlit display is easy to read measurement results in dark environments.

$ 310.00

It can measure refractive index 1.3000~ 1.7000nD and sugar content 0~ 100% Brix, with accuracy of +/- 0.0002nD and +/- 0.1% Brix, respectively, and supports temperature correction and direct data printout.

$ 1282.00

With three light source system, color rendering index up to 98, all metal structure with three drawer, table size 1350 * 900mm, in line with ISO3664 international standards.

$ 2365.00

In line with ISO3664 standards, the color rendering index reaches CRI = 98, dual Illuminant configuration with Timer, all-metal structure is stable and durable, the inclined table design conforms to visual observation habits, and the light is uniform.

$ 1332.00

With CRI = 98 high color rendering index and 6500K color temperature, lamp with Timer, all-metal structure, large folio size for easy operation, can be hung and installed to ensure accurate Color comparison.

$ 719.00

Measurement refractive index range 1.3-1 nD, sugar measurement 0-95%, visual aiming Optical inspection dial reading, temperature digital display, stainless steel base and hard Glass prism good durability.

$ 398.00

With high color rendering index CRI = 98 and dual light source design, it provides a variety of color temperature options such as D65, D50, TL84, etc. With light source Timer, uniform lighting and convenient lamp replacement.

$ 783.00

Measurable refractive index nD range 3000-1.7000, accuracy of +/- 0.0003nD, support 0-95% sugar concentration measurement, equipped with 2x and 22x double magnifying glass system, suitable for transparent translucent sample analysis.

$ 453.00

Articles

How to choose the right rotational viscometer?
This article introduces how to select an appropriate rotational viscometer, so you won't be blind when choosing a viscosity measurement instrument!
How to choose a laboratory coater? Which one should you buy: wire bar, scraper, or slot die?
This article introduces three methods for selecting laboratory coating machines: wire bar coating is suitable for low-viscosity coatings, offering low cost and simple operation; blade coating is ideal for medium-to-high viscosity slurries or those containing particles, with a wide range of film thickness control; slot-die coating provides the highest precision and is suitable for high-end applications such as electronic films.
Laboratory blade coating machine is used for analyzing the film-forming characteristics of high-viscosity slurries.
This article analyzes the characteristics of a laboratory doctor blade coater for forming films from high-viscosity slurries. It focuses on the impact of slurry rheological properties on film formation quality.
Effect of Different Coating Speeds on Film Thickness Consistency in an Adjustable Film Applicator
This paper studies the influence of coating speed of an adjustable film applicator on film thickness uniformity. In the experiment, the coating blade gap was fixed at 100 μm, and a resin solution with a viscosity of 200 mPa·s was used to prepare films at five speeds ranging from 10 to 80 mm/s, followed by thickness measurements.
Stormer viscometer controls the in-can viscosity of latex paint.
This paper introduces the application of the Stormer viscometer in controlling the paint can viscosity of latex paint. Paint can viscosity affects application performance and user experience, with either too high or too low values causing issues.
Rotation rheometer evaluates the atomization performance of water-based paint spraying.
This article introduces how to evaluate the atomization effect of water-based paint spraying using a rotational rheometer. It first explains the two stages of atomization, as well as the importance of rheological parameters such as shear viscosity, storage modulus, loss modulus, and complex viscosity.
Application of Laboratory Scraper Heating Coating Machine in Hot Melt Adhesive Coating
This article introduces the application of a laboratory blade heating coating machine in hot melt adhesive coating. It first explains the coating process and principles, including three stages—heat conduction, fluid shear, and surface wetting—as well as the influence of temperature on adhesive viscosity.
Application of High-Temperature Viscometer in Testing the Melt Viscosity Characteristics of Hot Melt Ink
This article introduces a method for testing the melt viscosity of hot-melt ink using a high-temperature viscometer. The test employs a rotational viscometer to measure the viscosity of three ink samples at different temperatures.
Application of Cone-and-Plate Viscometer in Determining the Rheological Curve of Non-Newtonian Fluids in UV Inks
This article introduces how a cone-plate viscometer measures the rheological curve of UV ink. UV ink is a non-Newtonian fluid whose viscosity changes with shear rate.
Lab Mixer Selection - Viscosity Determines Torque
This article mainly discusses how to select a laboratory mixer based on the viscosity of the material. The higher the viscosity, the greater the torque required. Low-viscosity liquids are suitable for high speed and low torque, while high-viscosity materials require low speed and high torque.
The impact of temperature uniformity in laboratory water baths on viscosity measurement
This article discusses the importance of temperature uniformity in laboratory water baths for viscosity measurement. Viscosity is highly sensitive to temperature variations, and uneven temperature distribution within the water bath can lead to deviations in measurement results.
Guide to Selecting a Laboratory Rotational Viscometer for Coatings Development
This article introduces how to select a laboratory rotational viscometer in coatings research and development. It first explains the principle of rotational viscometers measuring viscosity based on shear resistance, and then points out that key parameters to consider during selection include measurement range, shear rate, temperature control, and rotor configuration.
The Zahn cup is used for the daily inspection of the viscosity of electrophoretic paint bath solutions.
This article introduces the application of the Zahn cup in daily inspections of the viscosity of electrophoretic paint bath solutions. The viscosity of electrophoretic paint affects coating quality, making daily inspections crucial. The Zahn cup is simple to operate, cost-effective, and suitable for rapid on-site measurements.
High-temperature viscometer evaluates the flow characteristics of ceramic coatings before sintering.
This article introduces how to use a high-temperature viscometer to evaluate the flow characteristics of ceramic coatings before sintering. During measurement, the instrument detects changes in the viscosity of the coating sample under simulated sintering temperature conditions using rotational or oscillatory principles.
Handheld viscosity cups are used for rapid assessment of paint viscosity at construction sites.
A handheld viscosity cup is a portable tool used to quickly assess the viscosity of coatings at construction sites. It operates based on the flow-out time method, calculating viscosity by measuring the time it takes for the coating to flow out of the cup's orifice. It is suitable for Newtonian or approximately Newtonian fluids.