Kinematic Viscometer LKV-A11

The tubes of Kinematic Viscometer LKV-A11 must be cleaned thoroughly after each test to prevent contamination and residue buildup. First, drain the remaining sample and rinse the tube with a suitable solvent that effectively dissolves the tested fluid. Then, use filtered air or nitrogen to dry the tube completely, ensuring no moisture remains. For best results, cleaning should be done immediately after testing before the sample begins to dry inside the tube. We recommend consistent cleaning as a critical step in maintaining precision for all future viscosity measurements.

Our Kinematic Viscometer LKV-A11 includes multiple tubes to cover a wide range of viscosities, and selecting the correct one depends on the sample’s expected viscosity. The aim is to achieve a flow time between 200 and 1,000 seconds for reliable results, which may require choosing a smaller or larger diameter tube depending on how fast the sample flows. If the sample flows too quickly, a narrower tube should be used; if it flows too slowly, a wider tube is preferred. Many labs begin with a mid-range tube and adjust based on trial results. The calibration constant of the selected tube must be known to calculate the final kinematic viscosity value accurately.

Labtron recommends storing Kinematic Viscometer LKV-A11 tubes in a clean and padded rack or box to avoid damage and dust. Don’t let the tubes touch hard surfaces or sharp tools, as they can crack or scratch easily. Label each tube and keep a record of its calibration and use. Tubes should be checked and recalibrated from time to time using certified reference oils. Good storage and careful handling help keep your tests accurate over time.

The Kinematic Viscometer LKV-A11 should be checked regularly by measuring known reference oils and confirming the temperature is accurate. If the test results are inconsistent, inspect the heater, stirrer, and temperature sensor for any issues. Keep a written log of test data like bath temperature, timing, and results to track performance. This helps catch problems early and keeps your test process reliable. We also suggest yearly calibration by a certified service.

Our Kinematic Viscometer LKV-A11 may give wrong results if the bath isn’t at the correct temperature, if tubes are dirty, or if there are bubbles in the fluid. Always wait for the bath to reach the set temperature and double-check it with another thermometer if needed. Make sure the tube is clean, dry, and bubble-free before testing. Use a digital stopwatch to measure the flow time carefully. Following the test steps properly helps you get accurate and repeatable results.