These calibration mixtures are made with pure, highly characterized neat material and are prepared using NIST-traceable balances and weights. Each ampul is supplied with a data sheet indicating the exact concentration and a sample chromatogram.
Note: The D2887 Calibration Mix is a weight/weight % blend of short-, medium-, and long-chained alkanes that requires special handling to ensure accurate transfer and analysis. Restek recommends heating the sealed ampul for 3 minutes at 100 °C (212 °F) to completely liquefy the sample. Invert the ampul several times to homogenize the contents and then open, transfer, and dilute (per your application) within 1 minute of heating.
