Request InfoSpectrEcologySpectrEcology LLC has released smart cuvettes that measure pH and pO2. Compatible with any spectrophotometer, the pHuvette is a proprietary nanomaterial optical pH sensor embedded in the wall of a standard 1-cm cuvette to trap bromcresol green pH indicator ions in a hydrophilic sol-gel cage. The pHoxyvette cuvette has an embedded oxygen sensor. Hydrophobic sol gel traps a ruthenium fluorescent compound, and oxygen is determined via phase fluorimetry to measure the fluorescence quenching. 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