Gasoline in Water, PT Proficiency Testing Material, Concentrate for dilution to 100 mL, MilliporeSigma™ Supelco™

Description

• This ampule contains a concentrate of a blended gasoline from three different sources in methanol
• This PT sample is packaged as a 1.5 mL concentrate
• The solvent for this sample is methanol
• The PT sample is not preserved.Sample preparationFill a 100-mL volumetric flask to volume with carbon-filtered reagent-grade water at room temperature
• Open ampule PE1798-2ML (be careful to avoid cuts on glass) and immediately withdraw 20 muL
• Quickly inject the 20 muL aliquot into the reagent water in the expanded area of the volumetric flask
• Mix the sample by inverting the flask three times only (excessive shaking results in loss of volatiles) and analyze immediately