Laboratory Air Analysis - Entech Instruments

Analysis of Ethylene Oxide at Low Part-Per-Trillion Levels

Analysis of Ethylene Oxide at Low Part-Per-Trillion Levels by GCMS Utilizing a Next Generation, Non-Cryogenic Preconcentrator with Multi-Capillary Column Traps to Reduce Background Interferences for Improved Method Detection Limits Ethylene Oxide is a highly toxic chemical that increases carcinogenic, reproductive, and developmental risks eave at part per trillion levels. The EPA recently increased its […]

Stability of Reduced Sulfur Compounds In Inert Glass Canisters

A New Cryogenless TO15 Canister Preconcentrator with Reduced System Carry-Over When Exposed to Higher Concentration Samples

OVERVIEW A new preconcentrator design is presented which eliminates the need for liquid nitrogen or complicated electronic cooling while performing US EPA Method TO15 analysis . A new technology called Multi-Capillary Column Trapping System (patent pending), or MCCTS, is used to concentrate all TO15 compounds at 35°C, which is achieved simply by using cooling fans. […]

7200A – Fast US EPA TO15 Analysis Providing Higher Productivity using the new Entech 7200A and Agilent 7890B/5977 GCMS

INTRODUCTION Canister sampling and analysis for measurement of volatile chemicals is finding use in a growing number of diversified applications. This includes analysis of VOCs in Ambient Air, Indoor Air, Vapor Intrusion, Soil Gas, Landfill Gas, Stack Gas, Fixed Gas Cylinder Purity, and others. As the EPA Method TO15 market continues to grow, there is an increasing need to improve laboratory throughput. Reducing cycle […]

Performance Comparison – Volatiles Analysis of Samples with Elevated CO2 & Methane Levels. 7200 Packed-Trap Preconcentrator vs 7200CTS Capillary Column Trap Preconcentrator

Canister sampling and analysis for measurement of volatile chemicals is finding use in a growing number of diversified applications.

Expanding the Molecular Weight Range of Whole Air Sampling with Stainless Steel Canisters using Active SPME Sample Preparation and GCMS Analysis

A Simple, More Reliable Time Integrated Whole Air Sampling Approach To EPA Method TO15 Using Helium Diffusion Sampling

Helium Diffusion Sampling for Personal Monitoring by EPA Method TO15

A new method for simultaneous analysis of semi-volatile organic compounds in outdoor/indoor air of large office buildings

Exposure to various groups of SVOCs, particularly in the indoor air, is of increasing concern worldwide.

The Combination of 3 New Sampling Techniques Paired with GCMS for Determination of Uptake Rates and Accurate Monitoring of SVOC Endocrine Disruptors in Indoor Air

A New Cryogenless TO15 Canister Preconcentrator with Reduced System Carry-Over When Exposed to Higher Concentration Samples

Overview A new preconcentrator design is presented which eliminates the need for liquid nitrogen or complicated electronic cooling while performing US EPA Method TO15 analysis. A new technology called Multi-Capillary Column Trapping System (patent pending), or MCCTS, is used to concentrate all TO15 compounds at 35°C, which is achieved simply by using cooling fans. Two […]