Total petroleum hydrocarbons (TPH) represent a broad range of compounds derived from crude oil that pose potential environmental and human health risks when present in water. This application note describes the development and validation of a GC‑FID method for the determination of TPH in water using hydrogen as an alternative carrier gas. The method demonstrates excellent precision and specificity across a wide carbon range, while offering a practical response to ongoing helium supply constraints and supporting more sustainable laboratory operation

Effective monitoring of VOC contamination in water requires sensitive, reproducible and compliant analytical techniques. In this application note, we demonstrate how the SCION Versa headspace sampler coupled with GC‑MS meets the requirements of EPA Method 8260 for water analysis. The method achieves excellent performance in terms of linearity, precision and recovery, offering laboratories a dependable solution for VOC determination

What are they, what are the differences, how and why to use them

Importance of using analytical standards – qualitative and quantitative analysis, analyte confirmation, reference standards

Internal Standards – What are they? How do I choose, use, and benefit from them?

Importance of Equipment Calibration. How to calibrate and the benefits (balances, pipettes, pH meters)

Analytical quality control. Calibration, QC samples

Unknown data with Fullscan using NIST scoring

Best practice for integrating chromatographic data. Step by step guide. Overview of functions.

Analytical Data – Determining and Rejecting Outliers.
How to spot an outlier. Statistical calculations to confirm outliers with confidence