HE-SIS for Thermo ICP-MS. High Efficiency Sample Introduction System (HE-SIS) for Thermo Q/RQ/TQ ICP-MS and TOFWERK icpTOF. Originally designed as a highly efficient single-cell sample introduction system, Glass Expansion’s HE-SIS has been redesigned to provide superior performance across a wide variety of applications, including single-cell, single particle, nanoparticle, and low-volume sample studies, with up to 95% transport efficiency. Conventional ICP-MS spray chambers have low transport efficiencies (typically <5% TE) that filter out larger droplets (> 5um) from the nebulizer aerosol. The Glass Expansion HE-SIS features three critical components to overcome this significant sample transport deficiency: A High Efficiency MicroMist Nebulizer, Patent-pending MicroJet Gas Adaptor, and a High Efficiency Spray Chamber. This component combination improves the transport efficiency for superior performance.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001