Chorus Line*

A multi-parametric analyzer for infectious diseases and autoimmunity with single-test, ready-to-use device containing all the necessary reagents to perform the assay.

The serum sample is manually dispensed in the device by the user; the instrument will automatically perform all the operations (dilutions, dispensantions, wahings, photometric readings). The results are printed by the internal thermal printer or sent to the host computer through the Laboratory Information System.

Each test kit contains a master curve procedure with 1 point calibrator.

Main Features

• The system can process up to 30 different devices per run

• Archiving of all the data of the last 20 analytical sessions

• Microprocessor 16-bit

• 512 Kb ram

• 1 Mb flash-rom

• LCD Color Touch-Screen

• Internal and external bar-code readers

• Internal Thermal Printer

• Internal modem for tele-assistance

• Software upgrade fro remote control

• Bi-directional connection to host computer

• Multiwalength photometer (450, 620, 650 nm)

• Dimensions 66 cm/ 45 cm / 52cm (L/H/QW)

• Weight: 45 kg

The Instrument

The sample is manually dispensed by the User in the device.

The sampling probes have capacitive level sensors to check that the reagents be ransferred and dispensed in the reaction wells.

All the other operations (dilutions, dispensations, incubations, washings and redings) are performed by the instrument itself.

The development of colour is read with a kinetic method in three reading stations. The value of the first reading is subtracted from the value of the third reading, as a blank, and the delta of absorbance is used to calculate the final result.

The instrument has on board 1 tank for the washing buffer (used to wash the reaction wells) and 1 tank for the cleaning solution (used to wash internally and externally the sampling probes).

The 10 L waste tank is outside the instrument.

The Device

Devices are single use and contain all the reagents needed to perform the tests. The sample diluent contains a sample addition monitor that turns blue when the sample is added. This colour change is recorded by the instrument, allowing a control on the actual ispensing fo the sample.

The volume of serum use are:

EIA: minimum 60 – maximum 150 L
CFT: minimum 120 – maximum 150 L

The isntrument is programmed reading the bar-code on the devices. The bar-codes contain all the information about the test, included the expiration date.

The kit format is 36 or 12 tests, and has been chosen on the basis of both the frequency of the specific test and on its shelf-life. CFT kits have a 12 devices format as the shelf-life is 6 months from the moment of production. ELISA kits have a 36 devices format and the shelf-life is 12 months. The ELISA kits for the determination of the avidity of IgGs have a 12devices format. Each ELISA kit contains 1 vial of freeze-dried calibrator and 1 vial of freeze-dried positive control.

 

(*) To be introduced in the USA shortly