Kinematic Viscometer LKV-A20

Labtron’s Kinematic Viscometer LKV-A20 is designed to measure kinematic viscosity, which shows how a fluid flows under gravity. Kinematic viscosity is given in centistokes (cSt), while dynamic viscosity, measured in centipoise (cP), shows how a fluid resists flow when force is applied. It is best for fluids that flow on their own through a capillary tube, like oils and fuels. Dynamic viscosity can be found by multiplying kinematic viscosity by the fluid’s density. Our device is widely used in oil and fuel labs because these industries often prefer kinematic viscosity testing.

The Kinematic Viscometer LKV-A20 requires proper sample preparation to get accurate viscosity readings. The sample should not have bubbles, solid particles, or moisture, as these can affect how the liquid flows through the viscometer tube. It works best when the sample is pre-filtered and brought to room temperature before placing it in the bath. Use clean and dry pipettes or syringes to fill the tubes to avoid contamination. Our recommendation is to always use the same amount of sample and follow the same steps every time to get repeatable and accurate results.

Our Kinematic Viscometer LKV-A20 uses separate viscometer tubes for each sample, which helps avoid cross-contamination. The open bath design of the viscometer makes it easy to place and remove the tubes without them touching each other. The clear bath allows users to see if there are air bubbles, dirt, or leftover fluids before starting the test. It is important to follow regular cleaning steps, flush with proper solvents, and use specific tubes for each type of sample. For important tests, our advice is to use separate tubes for each sample to avoid mixing results.

Labtron’s Kinematic Viscometer LKV-A20 uses Pinkevitch viscometer tubes that must be cleaned immediately after each use to maintain measurement accuracy. A suitable solvent such as acetone, hexane, or a lab-approved cleaning agent should be flushed through the tubes using a vacuum system or pressure bulb. It benefits from proper drying using warm, filtered air or by air-drying in a dust-free cabinet. Periodic inspection is essential to detect internal residue, scratches, or any physical damage that may impact test results. Our system requires users to avoid abrasive tools or brushes, as these can damage the precision interior surface of the tubes.

The Kinematic Viscometer LKV-A20 may show inconsistent results due to temperature instability, improper tube cleaning, incorrect sample handling, or damaged equipment. First, confirm that the bath temperature remains stable and accurate within ±0.01°C throughout the test. It relies heavily on clean and dry Pinkevitch tubes any residual moisture or contamination can alter flow times significantly. Ensure tubes are free from scratches and air bubbles and that they are properly aligned within the bath. To reduce user error, our recommendation is that operators follow a consistent timing and observation method, and replace any visibly worn or damaged viscometers.