In addition to measuring end-product quality, analytical tools can continuously measure process quality. New analytical testing
equipment gives manufacturers more tools to quickly identify problems on line and thus better control quality. A sensor from
Mettler Toledo measures on line total organic carbon levels in process water. A spectrometer from Mustard Tree Instruments
measures chemical composition on line. Hiden Analytical's new flow-through membrane interfaces are used in a mass spectrometer
that measures dissolved gases and vapors in aqueous solutions.
Sensor continuously measures total organic carbon levels
The new Thornton 5000TOCi sensor with Intelligent Sensor Management (ISM) from Mettler Toledo's Process Analytics Division
continuously measures on line total organic carbon (TOC) levels in process water. The system can be used to monitor resin
bed performance, quality of final rinse water, and the effectiveness of TOC-destruct UV lamps, for example. The sensor's fast
response ensures that TOC excursions will not be missed. The new system simplifies data collection, uses a semi-automated
process to improve calibration reliability, and eliminates sensitivity to system pressure changes. The system also simplifies
maintenance with diagnostic data viewed on detailed sensor status screens.
The 5000TOCi can be used with Thornton's new M800 ISM color touch-screen transmitter, which is available in two versions that
can operate up to either two or four sensors for various parameters including TOC, pH, and dissolved oxygen.
Thornton 5000TOCi Sensor Mettler Toledo www.mt.com/toc
Raman spectrometer provides on line material verification and composition testing
Mustard Tree Instruments introduced the Verifier Process System 1000 (VPS-1000) for on line chemical identification and composition
testing of raw and blended materials. The VPS-1000's waterproof enclosure, which is about the size of a laptop computer, protects
a sensitive Raman spectrometer that can be used for both qualitative and quantitative testing. The system can be controlled
remotely and can operate in high temperatures and hygienic environments. Using laser technology to measure through a sight
glass, the system eliminates human or instrument exposure to potent materials.
Verifier Process System 1000 Mustard Tree Instruments www.mustardtree.com
Mass spectrometer measures dissolved gases and vapors
The HPR-40 Membrane Inlet Mass Spectrometer from Hiden Analytical has a new range of flow-through, semi-permeable interfaces
designed to measure dissolved gases and vapors in liquid media that flows across or against the membrane surface. Interfaces
designed for specific applications are continually being developed as needs arise. The HPR-40 can be used with flowing samples
(using the circular membrane inlet), with single static samples (using the single probe membrane interface), or for multistream
sampling (using 4-, 8-, 20-, 40-, and 80-way selectors). The HPR-40 benchtop system includes control and data analysis programs,
and multi-stream samplers have automated, user-programmable sequencing.
HPR-40 Membrane Inlet Mass Spectrometer Hiden Analytical www.hidenanalytical.com