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-Type Viscosity Cups. This viscosity cup is designed to measure the viscosity of Newtonian or near-Newtonian liquids. The Zahn Cup 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 the desired range to ensure product performance and quality. This common method measures efflux time, which is expressed in seconds. The results can be converted to kinematic viscosity (centistokes) using appropriate conversion charts. Standard Test Method: ASTM D4212 – Standard Test Method for Viscosity Measurement Using Dip-Type Viscosity Cups. Testing Procedure: - Maintain the test liquid temperature at 25°C, with fluctuations no greater than ±0.2°C. - 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, 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 drainage. - Stop timing when the first distinct break in the fluid stream occurs. Maintenance: With proper care, the Zahn Cup can last for many years. After each use (except during repeated testing), clean the cup with a soft cloth. Do not use wire brushes, sandpaper, or other abrasive tools. Pay special attention to cleaning the nozzle to remove residue, and avoid scratching the internal surfaces. Model and Technical Parameters: Features: Round-head stainless steel construction, precision-drilled nozzle, fine craftsmanship, accurate measurements, durable design. Models: No. 1, No. 2, No. 3, No. 4, No. 5 (No. 8 is available for special applications) Measuring range: 5–1840 mm²/s (centistokes) Note: Centistokes = centipoise / specific gravity Model Details: Model No. 1 - Measuring range (mm²/s): Approx. 5–56 - Nozzle diameter: 2.0 mm - Application: Very low viscosity 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: Higher viscosity liquids and mixtures - Flow time (s): 20–80 Model No. 5 - Measuring range (mm²/s): Approx. 460–1840 - Nozzle diameter: 5.28 mm - Application: High viscosity liquids and mixtures - Flow time (s): 20–80 Notes: - Due to manual measurement, please allow a tolerance of 0.1–0.3 mm. - Color may vary slightly due to monitor display differences. Customer Support: If you have any questions about this product, please . We aim to respond promptly and provide clear, complete information to support your purchase decision. Satisfaction Guarantee: Our goal is to provide a positive, pleasant, and worry-free shopping experience. We strive to deliver accurate product descriptions and responsive customer service. If you are not satisfied with your purchase, please before leaving negative feedback. We are committed to resolving issues quickly and professionally. Refund Policy: We accept returns and offer refunds if the product is not as described or arrives damaged. Please provide photos of any damage for a full refund. We will work with you to ensure satisfaction.