OXYTRANS TR O₂ Measurement (optical; in-line) OXYTRANS M O₂ Measurement (optical; portable) CARBOTEC TR-PT CO₂ Measurement (pressure-temperature) CARBOTEC NIR CO₂ Measurement (optical) RHOTEC Measurement of Density & Concentration RHOTEC L Density Measurement in the Laboratory SONATEC Measurement of Sound & Concentration COMBITEC Concentration Measurement (3 Components)