SEXUAL Lubricant Database

 

Sample Preparation

 

Neat Preparation

Neat samples were analyzed directly out of the vial or off of the sample, i.e., condoms.

  • DART-HRMS: The closed end of a micro-capillary tube was dipped into the sample prior to instrument introduction.
  • FT-IR: 2 uL of the sample was pipetted onto the ATR crystal for analysis.

 

Extract Preparation

Based on the individual needs of each instrument, the extracts were prepared accordingly:

  • DART-HRMS: 10,000 ppm w/v extracts solutions of each sample was prepared in either methanol or hexane by weight for DART analysis.
  • GC-MS: 10,000 ppm w/v  stock solutions of each sample was prepared in either methanol or hexane and diluted to 1,000 ppm for GC-MS analysis. All 1,000 ppm extracts were prepared with a 10 ppm v/v tetrachlorethylene internal standard (IS).
  • FT-IR: 80,000 ppm w/v extracts solutions of each sample was prepared in either methanol or hexane by weight for FTIR analysis.