Introduction
A kinematic viscometer is an instrument used to measure the kinematic viscosity of liquids, which is the ratio of the dynamic viscosity to the density of the liquid, and it is used in the petroleum, lubricant, chemical, food, and pharmaceutical industries for quality control and specification testing. The kinematic viscosity is measured by measuring the time for a fixed volume of the liquid to flow through a capillary tube under gravity at a controlled temperature, following standard methods, such as ASTM D445; the instrument consists of a capillary viscometer, such as a Cannon-Fenske, Ubbelohde, or Ostwald viscometer, which is held in a constant-temperature bath to maintain the test temperature, and the flow time is measured, and the kinematic viscosity is calculated by multiplying the flow time by the viscometer constant, and the viscosity is expressed in units of centistokes or square millimeters per second. Kinematic viscometers are used for measuring the viscosity of lubricating oils, for testing fuel oils and diesel, for testing crude oils, for measuring the viscosity of process liquids, for quality control of oils and greases, for research, and for many other applications, and they are available as manual instruments, in which the operator measures the flow time with a stopwatch, and automated instruments, which measure the flow time automatically and calculate the viscosity, with features such as precise temperature control, multiple viscometer tubes, and data analysis. With their standardized measurement, kinematic viscometers are essential for viscosity measurement in many industries.
Kinematic Viscometer LKV-T2021
Kinematic Viscometer a temperature range from RT to 110°C with an accuracy of ±0.01°C for precise viscosity testing. This viscometer includes a durable 10L stainless steel chamber for...
Kinematic Viscometer LKV-T2020
Kinematic Viscometer measure fluid viscosity by observing the flow of liquids, with bath volume of 18 heating elements for temperature regulation. High-quality glass construction ensures...
Automated Kinematic Viscometer LKV-T2019
Automated Kinematic Viscometer features an auto sampler of 12 positions for smooth and automated operation. It offers temperature control range of 20℃ to 100℃, supported by silicone fl...
Automated Kinematic Viscometer LKV-T2018
Automated Kinematic Viscometer features an auto sampler of 24 positions and dual sample preheating zones, offering enhanced throughput. With a temperature range of 20℃ to 100℃ and a re...
Low Temperature Kinematic Viscosity Tester LKV-T2014
Low Temperature Kinematic Viscosity Tester works in a temperature range of -65 ℃ to room temperature, enabling accurate testing at very low temperatures. It is equipped with advanced an...
Kinematic Viscometer LKV-T2013
Kinematic Viscometer features a clear cylindrical constant temperature bath with a capacity of 23 liters. It allows visual monitoring of the fluid samples. It can simultaneously measure ...
Kinematic Viscometer LKV-T2012
Kinematic Viscometer functions optimally within an ambient temperature range of -10°C to 35°C and relative humidity of up to 85%. Equipped with 11 capillaries it provides versatility f...
Kinematic Viscometer LKV-T2016
Kinematic Viscometer is a fully automated kinematic viscometer, designed with a single-chip microcomputer. Built to work within an ambient temperature range of 0℃ to 40°C and relative ...
Kinematic Viscometer LKV-T2015
Kinematic Viscometer up to 4 samples simultaneously, ensuring efficient testing in laboratory environments. With a high-performance 6W stirring motor, it provides uniform temperature dis...
Kinematic Viscometer LKV-T2011
Kinematic Viscometer is essentially used for measuring the viscosity of fluids with high precision. It operates efficiently within an ambient temperature range of -10°C to 35°C. Can to...
Kinematic Viscometer LKV-T2017
Kinematic Viscometer works in a temperature range of -60℃ to 140℃ with an accuracy of 0.05 ℃. Features a 5.6-inch high-definition color touch screen for a clear interface and easy ope...
Kinematic Viscometer LKV-T2010
Kinematic Viscometer is designed with hard glass bath and electric stirring device with 1200 rpm stirring motor. Designed as per D445 standard configuration, features ambient to 100°C o...
Standards
ISO 3219:1993-Plastics-Determination of viscosity using a rotational viscometer with defined shear rate
ASTM D445-24-Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids
ISO 3104:2023-Petroleum products-Transparent and opaque liquids-Determination of kinematic viscosity
GB/T 265-Petroleum products-Determination of kinematic viscosity and calculation of dynamic viscosity
ISO 23581:2024-Petroleum products-Determination of kinematic viscosity by Stabinger type viscometer
ASTM D2196-20-Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer
Complies with the above standards, but is not limited to them.
Features
1. Kinematic viscometer for measuring kinematic viscosity of liquids.
2. Glass capillary or automated method for precise viscosity determination.
3. Suitable for petroleum, chemical, pharmaceutical, food, paint and research.
4. Includes viscometer bath, capillary tubes, timer, controller and manual.
5. Supports viscosity measurement for oils, fuels, polymers and other liquids.
FAQ
Q1: What testing scenarios is this viscometer mainly applied to?
A: The kinematic viscometer is used in petroleum testing, chemical manufacturing, pharmaceutical development, food processing, paint and coating, lubricant industry and research to measure the kinematic viscosity of liquids including oils, fuels, polymers, solvents and other fluids for quality control, product specification and research. It supports petroleum product viscosity testing (lubricating oils, fuels, hydraulic fluids), chemical product viscosity specification, pharmaceutical viscosity measurement (syrups, suspensions), food product viscosity (oils, syrups), paint and coating viscosity, polymer solution characterization, and general fluid viscosity analysis. Kinematic viscosity is a critical quality parameter for many fluids, affecting performance, handling and processing.
Q2: What standards does the viscometer comply with?
A: The kinematic viscometer follows ASTM D445 for kinematic viscosity of petroleum products, ISO 3104, IP 71, and relevant GB/T standards including GB/T 265 for petroleum products. The capillary viscometers should be certified per ISO 3105 or ASTM D446. The temperature bath should be calibrated and controlled per the standard. Calibration should use certified viscosity reference standards traceable to international standards.
Q3: What is the warranty period for the whole machine and key components?
A: The whole kinematic viscometer system is covered by a 12-month warranty. The temperature bath, controller, timer and housing are covered, while capillary viscometers, reference standards and fuses are consumables or accessories. Damage from improper use, capillary breakage or unauthorized repair is excluded. Extended service contracts may be available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained laboratory personnel familiar with viscosity testing, capillary viscometer use and temperature control. We provide operation manuals, training and application support. Proper capillary selection, sample loading, temperature equilibration, flow time measurement, cleaning and result calculation are important for accurate viscosity determination.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Temperature bath calibration against a reference thermometer recommended every 6-12 months. Capillary viscometer calibration constant verified with certified reference standards periodically. Timer accuracy verified. Routine cleaning of capillaries after each use. Full system performance verification annually for accredited laboratories.
Q7: Are supporting consumables universal?
A: Capillary viscometers (Cannon-Fenske, Ubbelohde), reference standards, cleaning solvents and thermometers are available from laboratory suppliers, though capillary type and size should match the application. Long-term consumable cost is low to moderate depending on sample volume.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes bath capacity, temperature range, capillary type, automation level (manual, semi-automatic, automatic), number of positions, data output and accessories. Additional capillaries and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the kinematic viscometer system and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged at additional cost. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The kinematic viscometer measures kinematic viscosity of transparent or translucent Newtonian liquids including oils, fuels, solvents, polymers and other fluids within the viscosity range, temperature and capillary specification. Opaque samples may require specific capillary types (reverse-flow viscometers). Non-Newtonian fluids may require rotational viscometry instead. Different sample types require specific capillary sizes and temperatures. Users should select appropriate capillary size for the expected viscosity (flow time >200 seconds per ASTM D445), ensure proper temperature equilibration (minimum 15-20 minutes), measure flow time accurately, clean capillaries thoroughly after each use, report results in mm2/s (cSt) with temperature specified, and calculate viscosity index for lubricating oils per ASTM D2270 if needed. The temperature bath should be maintained at the test temperature with proper uniformity (within +/-0.01 degrees C per ASTM D445). The capillary should be vertically aligned. For petroleum products, follow the specific product specification for test temperature (typically 40 degrees C for middle distillates, 100 degrees C for lubricating oils). The sample should be free of bubbles and particulates that could affect flow. Capillaries should be stored properly and replaced when damaged or contaminated.
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