1. What is the principle of measurement?
– Turbodensitometry is the principle of measurement, with a proven track record over several years with 504 and 504+ combines the proven turbidodensitometry with LED photometry.
2. What is the light source used?
– It is based on long life LED diode with 504, and in case of 504+, it is LED photometric, with two wavelengths.
3. What is the wavelength of measurement?
– It is in IR region for 504, and 405nm and 750nm in case of 504+.
4(a)Does the system have any reference channel?
– Yes, with 504+, and 504 does not have reference channel.
(b) Do the analysers have ambient light rejection facility?
– Yes, the 504+ has the feature, and not available with 504.
5(a) Do the systems support on board calibration curve ?
– Yes, in case of 504+ nine point calibration curve is supported, but not in 504.
(b) How many calibration curves can be stored on-board ?
– Two calibration curves can be stored on-board with 504+. It is not available in case of 504.
6. How many test protocols are on-board ?
– There are 15 tests which can be stored and recalled from memory.
7. Does the system support external printer?
– Yes, the system(s) can be connected to external printer Seiko Epson DU414 or equivalent.
8. Do systems permit barcode identification of sample?
– Yes, when equipped with optional barcode reader.
9. What are the interface facilities available as standard?
– (i) RS232 (ii) USB (iii) SD-card for result and software management (iv) external barcode reader.
10. Can results be exported to LIS?
– Yes, LIS/HOST (USB) and LIS protocol (unidirectional) facilities are available.
11. Do systems allow usage of third party cuvettes?
– No, the cuvettes come with “cuvette card” for tracking of cuvette usage and only cuvettes supplied by LABiTec can be used.
12. Are systems sensitive to interference from hemolytic, icteric and lipemic samples?
– No, the system 504+ is sensitive to and not affected and free from interferences from hemolytic, icteric and lipemic samples.
13. What are the major differences between 504 and 504+ functionally?
– 504+ shares majority of features with 504 except for the fact that 504+ can handle (i) Chromogenic substrate based assays (eg. protein C, ATIII etc.), (ii) Immunoturbidimetry tests (e.g. D-Dimer) (iii) 504+ is equipped with measuring technologies for turbodensitometric and photometric tests at 405 and 750nm, (iv) Employs unique dual- wavelength technology (v) Insensitive to lipemic, icteric and hemolysed samples (vi) Nine point calibration curve, two nos. are supported.