Origin: Mainland China Cup body material: Stainless steel Number of cups: 1, 2, 3, 4, 5 Cup size: Approximately 44ml Total length: Approximately 345mm Cup inner diameter: Approximately 33mm Cup height: Approximately 57mm Product Usage: The immersion Zahn cup viscosity cup is manufactured in accordance with the American Society for Testing and Materials (ASTM) standards for paint and raw materials, specifically ASTM D4212-93, Standard Test Method for Dip Viscosity Cups. This viscosity cup is designed for measuring the viscosity of Newtonian or near-Newtonian liquids. It is widely used in coatings, ink, gravure, letterpress, lithographic, flexographic, and screen printing industries for viscosity measurement before or during application. It helps maintain consistent viscosity within a desired range to ensure product performance and quality. The Zahn cup is a common tool for liquid viscosity measurement. The dynamic viscosity is typically measured in seconds and can be converted to centipoise using appropriate conversion methods. Standard Test Method: ASTM D4212 – Dip Viscosity Cup. The test liquid should be maintained at 25°C, with temperature fluctuations not exceeding ±0.2°C during testing. To use: - Select the appropriate cup number based on the expected viscosity range. - Fully immerse the cup into the test liquid. - Measure and record the liquid temperature inside the cup, then remove the thermometer. - Use the finger loop on the handle to lift the cup vertically in a quick and steady motion. - Start the stopwatch as the cup exits the liquid surface. Keep the cup no more than 15 cm above the liquid level during outflow. - Stop timing at the first distinct break in the liquid stream. Maintenance: With proper care, the Zahn cup can last for many years. Clean with a soft cloth only. Do not use wire brushes, sandpaper, or other abrasive materials. It is critical to clean the orifice thoroughly to remove residue without scratching the internal surfaces. It is recommended to clean the cup after each use, except during repeated testing. Model and Technical Parameters: Features: Round head stainless steel cup, precision-drilled nozzle, fine craftsmanship, accurate measurement, durable. Model: No. 1, No. 2, No. 3, No. 4, No. 5 (No. 8 is for special liquids) Measuring range: 5–1840 mm²/s (PCT Stokes) Conversion: PCT Stokes × specific gravity = centipoise Model No. 1 - Measuring range (mm²/s): Approx. 5–56 - Nozzle diameter: 2.0 mm - Application: Very dilute liquids - Flow time (s): 35–80 Model No. 2 - Measuring range (mm²/s): Approx. 21–231 - Nozzle diameter: 2.74 mm - Application: Thinners, mixed paints, varnishes - Flow time (s): 20–80 Model No. 3 - Measuring range (mm²/s): Approx. 146–848 - Nozzle diameter: 3.76 mm - Application: Medium viscosity liquids, mixed coatings, varnishes - Flow time (s): 20–80 Model No. 4 - Measuring range (mm²/s): Approx. 222–1110 - Nozzle diameter: 4.26 mm - Application: Thicker liquids and mixtures - Flow time (s): 20–80 Model No. 5 - Measuring range (mm²/s): Approx. 460–1840 - Nozzle diameter: 5.28 mm - Application: Very thick liquids and mixtures - Flow time (s): 20–80 Note: - Due to manual measurement, a tolerance of 0.1–0.3mm may occur. - Color display may vary slightly depending on monitor settings. Satisfaction Guarantee: Our goal is to provide a clear, honest, and complete representation of our products. We aim to ensure a pleasant and worry-free shopping experience. If you have any questions or concerns, please contact us. We are committed to resolving any issues to ensure a positive and 5-star transaction. Please reach out before leaving negative feedback. We respond to all messages promptly. Return Policy: Returns accepted if the product is not as described or if damaged. Please provide photos for verification. A full refund will be issued upon confirmation.