The scheme shows the principle of measuring the TOC via conductivity with miniTOC.
|method & detection||UV oxidation (partial) & conductivity|
|sample volume flow||approx. 14 mL/min|
|time of measurement||2 sec (online mode) | 1 min (offline mode)|
|measurement range||0.5 to 1000 ppb|
|detection accuracy||~0.5 ppb or 1 % (whatever is greater)|
|ports||1 for sample, 1 for SST (basic) | 1 for sample, 3 for SST (pro)|
|related norms||USP <643>, EP 2.2.44, DIN EN 1484|
|ambient parameters||relative humidity: 10 to 95 %, temperature: 10 to 45 °C|
|interface ports||analog, according to Namur NE43|
|dimensions, weight, power||300 x 200 x 500 mm, 14 kg, 110 - 230 V, 50 Hz, 60 Watt|
|type of sample medium||pure or ultra pure water|
|medium conductivity||< 2 µS/cm (upgradable to < 10 µS/cm)|
|inlet pressure||< 1 bar|
|sample temperature||< 50 °C|
The miniTOC is used for pure and ultrapure water applications (e.g. WFI - water for injection).
The miniTOC operates according to USP 643, DIN EN 1494 and EP 2.2.44.
The miniTOC is only suitable for liquid media such as pure and ultrapure water, but not waste water or solids.
The miniTOC operates below a conductivity of 2 µS/cm, but can be designed to < 10 µS/cm on request.
The miniTOC uses the classic "flow-through" concept, in which the system oxidizes the sample using UV radiation and determines the TOC content in the sample via a conductivity difference measurement.
The miniTOC covers a TOC range from 0.5 to 1000 ppb.
The miniTOC is a classic online monitoring system, but can also be used in offline mode for measuring individual samples and can even be equipped with an autosampler.
Yes, the miniTOC can be calibrated easily and intuitively under the user's guidance. It also has an SST (system sustainibility test) function.
In addition to the calibration solutions, the pump hose must be changed at regular intervals and a new UV reactor inserted. After a subsequent calibration, the system is ready for use again.