Insights

Measurement, explained.

Short, evidence-led pieces on what water testing can and cannot tell you — written for consumers and product teams alike.

Filter Technology

Can water filters remove PFAS?

Performance varies by technology, compound and test conditions. Measurement, not category, is what settles the question for a specific product.

18 February 2026 · 5 min read

PFAS

PFAS vs PFOA vs PFOS: what's the difference?

Three terms that are often used interchangeably describe different things: a family, and two specific compounds within it.

11 February 2026 · 4 min

PFAS

What are PFAS in drinking water?

PFAS are a large family of fluorinated compounds measured at nanogram-per-litre concentrations. Here is what the term covers and how laboratories approach it.

4 February 2026 · 6 min

Microplastics

How are microplastics detected in water?

Filtration, microscopy and spectroscopy, with contamination control throughout. The method's size range defines what the result can say.

21 January 2026 · 6 min

Filter Technology

What does a water filter performance test actually measure?

The difference between influent and effluent, under defined conditions, for a defined list of parameters.

14 January 2026 · 5 min

Research

Why independent testing matters for filter manufacturers

Internal data guides development. Independent data can be shown to retailers, partners and customers.

7 January 2026 · 5 min

Laboratory Science

What does "99% removal" really mean?

A percentage without a starting concentration, a method and a detection limit is not a measurement.

17 December 2025 · 4 min

Laboratory Science

Understanding detection limits

What "not detected" does and does not tell you, and why limits differ between methods.

3 December 2025 · 5 min

Water Quality

Lead in drinking water: what laboratory testing tells us

Lead usually enters water within a building's own plumbing, which is why sampling protocol shapes the result.

19 November 2025 · 6 min