How long does the testing liquid last before it expires?

Our reagents come in durable glass bottles that don’t react with the liquid. The testing liquid will last a long time (over 2 years) if you store it appropriately.

Recommendations:

  • Store reagents at a cool temperature, between 2°–10°C (36°–50°F). A freezer is ideal. If that’s not possible, try storing at a consistent temperature in the range of 2°–22°C (36°–72°F).
  • Store the bottle upright.
  • Keep out of prolonged direct sunlight.
  • Replace caps immediately and tighten them carefully so that exposure to air and humidity is limited.
  • If you have more than one reagent, avoid switching bottle caps!

Posted in: Testing Questions