Supplementary instructions for the listed product parameters Key points (what these lines mean and why they matter) The performance figures referenced on the product page are baseline test results recorded at normal atmospheric pressure and typical room temperature. Test conditions: 25°C, water as the test medium, and no pump head (no discharge pressure or liquid column on the outlet). These baseline values are intended to give a consistent reference for comparison. Real-world performance can differ when operating conditions change. How this helps you (practical benefits) Provides a reliable baseline so you can compare models and choose the correct product for your needs. Makes it easier to predict changes in performance when you change the medium, temperature, or installation conditions. Reduces trial-and-error by clarifying the exact conditions under which the published numbers were obtained. Important attributes and performance considerations Function: These notes are supplemental instructions explaining the test conditions behind the published performance parameters. Compatibility: The statements apply to the product parameters previously listed; use them when comparing or specifying this product for an application. Test conditions to note: 25°C, water medium, no pump head (no discharge pressure). Performance is affected by: Ambient conditions: air pressure (altitude), ambient temperature, humidity. Medium properties: temperature, density, viscosity, and chemical compatibility. System load: actual discharge head, piping resistance, and any backpressure. Practical guidance for selecting and using the product If your process uses fluids other than water, or operates above/below 25°C, expect deviations from the published values—higher viscosity or heavier density typically reduces flow and pressure. If the pump will work against significant discharge head or backpressure, do not expect the “no-load” performance numbers; use the pump’s head/flow curve or consult technical support. For installations at high altitude (lower air pressure) or in extreme temperatures, test the pump under representative conditions or ask for performance data adjusted for those conditions. Quick checklist before installation or purchase Confirm the medium: water or a different fluid? Measure viscosity and density if not water. Confirm operating temperature range relative to the 25°C test condition. Determine expected discharge head and pipeline losses to compare against the no-load test numbers. If chemical compatibility or material constraints matter, verify suitability of pump materials with the medium. Use scenarios Aquarium or fountain circulation: Expect published flow rates close to test values if you use water at room temperature and have minimal discharge head; increased piping length or elevated outlets will reduce flow. Laboratory water transfer at 25°C: Baseline numbers are directly applicable for clean water lines and no backpressure, making it straightforward to size the pump for experiments or small systems. Industrial processes with viscous or hot fluids: Use the baseline as a starting point but arrange for corrected performance data or on-site testing—viscosity and temperature changes can significantly reduce throughput. Contact and support If your application differs from the test conditions (different fluid, temperature, altitude, or expected discharge pressure), provide those specifics to technical support to obtain adjusted performance guidance or recommendations. Note: The published performance parameters are valid only under the stated test conditions (25°C, water medium, no-load). Actual results will vary with ambient and medium conditions; plan and test accordingly.