Chemicals Transmittance Standards
Traceable, polystyrene film references for mid-IR and NIR from Starna
Hellma is the leading supplier for glass and quartz cuvettes, fiber optical probes and certified reference materials for UV/Vis/NIR/Raman/IR spectrophotometers and many other instruments using optical measurements. All products are made in Germany and ensure reliable measurements in optical analysis.
The Starna Group is the world\'s leading supplier of Certified Reference Materials for UV-Visible and NIR spectrophotometry, spectrophotometer cells, sampling accessories and optical components