Before sampling
Agree model, configuration, quantity of sample metres, and whether sample charges are credited. Write the cut interval printed on the tape (factory marks vary; do not assume 50 mm). A sample that is never cut does not test field-sealed ends. Name color and dimming requirements: RGB channels at full white versus a single correlated color temperature, PWM versus SPI pixels. Ask which accessories ship with the sample—end caps, waterproof connectors, channel, and a matching constant-voltage supply if the tape cannot be judged on a bench supply you already own. A 2026-09-17 observation of cuttable outdoor led strip lights is a keyword stamp, not a laboratory certificate.