P&P Optica offers a series of CCD based spectrometers, including: high performance spectrometers, multichannel spectrometers and imaging spectrometers all based on the unique technology of volume phase holographic (VPH) gratings. The non-scanning design provides the ability to measure very small changes in spectra simultaneously for the entire spectral range. This feature is specifically important for quickly changing systems with the need to detect very low substance concentration levels.