Pollution and Process Monitoring (PPM) of the UK says it offers Europe's most comprehensive range of TOC (total organic carbon) based water analysis systems for industrial, process and laboratory applications.

The company says it offers systems to cover everything from raw water intake protection and river water pollution monitoring through stormwater/wastewater control to final effluent (inferred COD/BOD).

Specialist areas of expertise include product loss and waste minimisation (CIP), pharmaceutical pure water control (USP), semiconductor process monitoring (RO) and breakthrough alarming (GAC).

"The Protoc 100 analyser has been designed to offer powerful but cost-effective real-time online analysis for single-stream monitoring applications," says a PMP spokesman. "Its features include 420 Ma outputs, high and low alarms and an LCD display of measured values."

He continues: ''An enhanced version called the Protoc 200 analyser offers the additional benefits of a large graphical LCD display, as well as auto-calibration and auto-cleaning.

''Capable of multiplexing up to six streams, the Protoc is designed to offer a powerful and economic solution for applications requiring online multi-point analysis.

''Its outputs feature 0-1 v/4-20 Ma alarms including utilities, and the instrument offers automatic cleaning and calibration.

''Options include over-range protection, floor- or wall-mounted IP65 enclosures, an acid/alkalis cleaning cycle, TC/TOC/TOC by difference and RS232/RS-485 serial ports.

''The analyser is controlled and monitored by a separate CPU which will show direct TOC values on an LCD display and provide hard-copy printouts from an integral thermal printer. The CPU can also be interfaced with a PC, chart recorder or data logger.''

For larger applications where multi-point continuous monitoring is required, the Protoc Spyder and Web system is claimed to offer both a flexible and economic solution.

''One Protoc Spyder unit can control and monitor up to four Protoc Web analyser units from a central control point. Each Web unit can multiplex up to two streams or else offer economical 100 per cent single-stream continuous monitoring, while the Spyder can be interfaced with a PC or on-site SCADA system,'' he says.

For off-line applications, PPM offers the Labtoc analyser with a menu-selectable range of 0-100 PPB/4,000 PPM and a choice of single or multiple runs utilising a 48 or 90 place carousel. Repeatability is 1-2 per cent and the instrument offers a typical across-the-board response time of 1-2 minutes.

The company also has continuous online trace level TOC analysers for applications requiring PPB (parts per billion) measurement of ultra-pure water.