The Harrick Scientific’s ConcentratIR2™ is a compact adaptation of the original Harrick multiple-reflection ATR accessory, designed to fit smaller FTIR sample compartments. This device is optimized for analyzing micro-liquid samples and features interchangeable diamond and silicon ATR sampling plates.
The ATR configurations incorporate a thin disk made of either silicon or diamond, which is optically coupled to a unique ZnSe component. The silicon setup consists of eleven internal reflections at an incident angle of 30°, suitable for a spectral range of 4000 cm-1 to 650 cm-1. In contrast, the diamond configuration allows for ten internal reflections at a nominal incident angle of 45°, covering a wavelength range from 4000 cm-1 to 550 cm-1.
The diamond version exhibits a low signal-to-noise ratio around 2000 cm-1 due to the presence of diamond lattice bands. To enhance optical throughput, it includes features such as turn-tilt mirror adjustments and a vertical adjustment mechanism.
The ConcentratIR2™ is fully enclosed to facilitate rapid sample changes and minimize disruptions during spectrometer purging.
Key Features
- Extended Si has a nominal incident angle of 30° and twenty-three reflections
- Easy to clean between samples
- Durable and sensitive ATR elements
- Diamond with a nominal incident angle of 45° and ten reflections
- Fast purging
- Little or no sample preparation
- Liquid cells (optional)
- Only 10 µl of sample needed
- Pre-aligned to simplify start-up
- Si with a nominal incident angle of 30° and eleven reflections