NEXTChem’s most advanced and capable unit. It can perform a great number of measurements on a large number of sample points. It can also provide extensive process control. OMNIChem is suitable for analyses in the following industries:

Measurement Methods
Two types of measurement methods are used for almost all NEXTChem analyzers: titration and (ion selective) standard addition. Both types of measurements methods can be used on all NEXTChem analyzers making each type of analyzer extremely flexible.

Titration
Titration methods involve the addition of a reagent to the sample until an endpoint is detected with an electrode or color probe. Most of the titrations fall with one of five different categories: acid/base, oxidation/reduction, complexation, precipitation, or color.

Standard Addition
Measurements with the Ion Selective Electrodes (ISE) utilize the standard addition method. The standard addition method involves measuring the sample with the ISE before and after a know standard has been added and using the difference in the readings to determine concentration.

Precision Reagent Pump
The heart of a process analyzer is the way reagents are delivered to the measurement cell. With all NEXTChem analyzers precision reagent pumps are used to deliver reagents. Because of the use of advanced stepper motor technology these pumps are very accurate + 0.001 mL. The utilization of a superior seal material makes the precision reagent pump very low maintenance only requiring to be rebuilt once per year.

Ease of Programming
All NEXTChem analyzers use touchscreen which make them very user friendly. The analyzer is programmed in a similar manner to the interaction with a bank ATM. In addition, to intuitive operation of the touchscreen the user can select English or a second language: Spanish, Portuguese, French, Dutch, traditional Chinese, simplified Chinese, Arabic, and Korean. The non-English interface makes the analyzer very easy for non-English speakers to use.

Filter-Free Operations
The MINIChem Series like all NEXTChem analyzers are designed to operate FILTER-FREE; this type of sampling INCREASES RELIABILITY and DECEASES MAINTENANCE. To make FILTER-FREE operation possible NEXTChem has created the “self-cleaning valve”. Utilizing the “self-cleaning valve” particles up to <6 mm can be easily handled. Large bore tubing is used to transfer the sample from the sample panel to the measurement cell 1/4” (6 mm) or 3/8” (9mm). Combining the self-cleaning valve with large bore tubing virtual eliminates the possibility of plugging; usually the most important issue in the operation of a process analyzer.

Automated Sample Dilution
The MINIChem series of analyzers can be configured to measure very high concentrations. This is accomplished by utilizing a dilution measurement cell. The dilution measurement cell is used with an external sample capture loop (5-30mL). This allows sample with up to <2 mm particles to be captured FILTER-FREE and sample burettes are never used.

Process Control
OMNIChem and MINIChem Series Process Analyzers have the additional capability of on-board process control. This process control capability allows the analyzer to control chemical feed pumps being used to add chemistry to the chemical bath being controlled. This is done with pneumatic chemical feed pumps. The MINIChem can direct 1 chemical feed pump, the MINIChem-Plus 2 chemical feed pumps; the Basic OMNIChem can direct 4 chemical feed pumps, and the Advanced OMNIChem 8 chemical feed pumps.

For further information on this product please contact the product manager, Ivan Saunders on 01342 820820 or email enquiries@qclscientific.com.