Use this Thermo Scientific™ SureSTART™ GOLD-grade glass insert, performance level 3, in 2 ml vials when analyzing small sample sizes (<2 ml samples) containing analytes such as polar compounds that strongly adsorb on the glass surface are sensitive to sample pH changes.

This level 3 insert is made of low-adsorption GOLD-grade glass and offers: highest glass purity available: lowest possible surface activity: ultra-low adsorption and pH shift for ultra trace analyzis: level 3 vials are designed to protect your most valuable samples and deliver consistent, reproducible results for your most demanding analyzes. They are specification certified to ensure their physical dimensions and autosampler compatibility, and meet all requirements of US, EU, JPN Pharmacopeia.