Sequential Automatic Analysis System (SAA)
Sequential automatic analysis is well established in clinical chemistry, where highly specialised systems execute some hundret samples per hour but are completely unflexible. For our mainly industrial field of activity we offer specific instruments with variable modules and special software, flexible and accessible. The user takes advantage from the reliability and easyness of operation established for clinic purpose.
The liquid transfer system applies a precision syringe to pipette sample and reagent(s) into the temperature controlled reaction cuvettes. The procedure of liquid transfer assures sufficient mixing and provides safety against carryover. After expiration of specified reaction time for the reagent, a second or third reagent is added, as defined in the method specifications.
After final reaction step the reaction solution is transferred into the optic unit and measured at specific wavelength.
Method procedures using sample blank compen-sation (Differential method) or kinetic methods apply a specific sequence. Reagent blanks measurement always is included in the automatic execution procedure. To measure low absorbance differences a 40mm Küvette is available.
The sample concentration is calculated considering the value of actual reagent blank and that of measured calibrant solutions. The application of stored calibration factors is possible. Calibration functions can be linear or non-linear.
The automatic analysis procedure includes an instrument self-test on the begin of each execution sequence. Limits can be set in the method specifications for automatic check of results validity. Off values are indicated.
Operators enter the instrument by password identification. Only the master analyst is allowed to access instrument and method settings.
Results are stored in the instruments memory, printed locally or transferred to the serial port of a PC (stand alone version).The use of Easychem for Windows software provides full control of the instrument and data handling via PC.
- 60 Positions for samples, calibrant(s), blank
- 18 Positions for reagents, cooled by Peltier
- Pecision syringe 1000µl, resolution 0,3 µl
- 96 Reaction cuvettes, temperatur stabilised 37°C
- Reaction times up to 60 minutes
- Measurement lightpath 7mm, optional 10/40 mm
- Optic unit temperature controlled by Peltier, 8 wavelength available
- 1-8 calibrant per method, alternatively fixed factor in memory
- Measurement procedures Endpoint, Differential, Kinetic
- Automatic dilution of samples and series of calibrants
- Up to 250 determinations per hour with Endpoint / Single Reagent
- Integrated PC, 2x 32 memory positions for methods, *membrane keyboard and *built in printer, serial port, ports for external keyboard, printer, *monitor (* depending on the instrument type).
- Outstanding overall repeatability (dilution, sample / reagent transfer, reaction intervals, detection)
- Special "Differential Methods" offer compensation of individual sample colour
- Extremly small demand of sample / reagent, depending on the method and measuring range
- High flexibility, access to method specificatons for adaption
- Simple and safe instrument operation and maintenance
- Integrated self test and operation control
- Excellent relation of cost to performance