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WaterLab automatic analysis of water and a quick resolution to a problem.

Waterlab is an automatic water analyser designed for the analysis of any combination of pH, Conductivity, Colour and Turbidity in water. The instrument can analyse approximately 30 samples per hour for all parameters. It is normally used with either a 50 or 100 position autosampler. The fully automated system is controlled by a personal computer which is also used for information entry, the setting of analytical parameters and data handling. Individual samples are taken for each module by means of piston pumps which have been designed to function in a sinusoidal manner. This type of pump ensures that the sample is delivered in a minimum time while retaining smooth filling and emptying of the analytical modules.

• Continuous analysis up to 30 samples per hour
• 100 position autosampler
• WindowsTM based control and data processing
• Analytical Modules

The Waterlab is normally equipped with up to four analytical modules for the analysis of pH, Conductivity, Turbidity and Colour.

The pH module is fitted with a fast response electrode for the determination of pH on waters of widely varying conductivity. The electrode and its associated flow cell have been designed with the minimum dead volume to give good precision. The pH module is calibrated with three different pH buffers. The actual values may vary depending on the pH range that is required.

The conductivity cell is a flow through cell optimised with respect to the speed of response and sensitivity. The temperature of the sample is measured and a compensation factor is applied in order to ensure optimum analytical performance. A 20ml volume of sample is taken.

The turbidity module has a 15ml cell and uses 40ml of sample. To reduce carryover and to improve precision the cell is emptied between samples.

The colorimeter is equipped with a 40mm flow cell and measures the absorbence at 400nm for optimal sensitivity. The colorimeter is a double beam system that ensures the stability of the signal . The system uses a 20ml sample and all samples are passed through a 0.45 micron filter.

A 50 to 100 position autosampler is used with the Waterlab 2000. All samples requiring analysis are stirred prior to analysis and the samples are taken simultaneously. A sensor is fitted that detects the presence of the sample containers such that unnecessary operations will not be carried out if the container is absent.

The Waterlab is designed to carry out a complete analytical operation without operator intervention. The calibration is automatically carried out from a series of standards. Correction for baseline and sensitivity drift is applied at intervals through the analysis. The software monitors the quality of the results and flags errors in the calibration or measurement.

The Waterlab requires the use of a 486 or better personal computer working under Windowsä and a suitable printer.