RR Mechatronics STARRSED TL, Instructions For Use Manual

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1. Instructions for Use (IFU)
Intended for the operator: Contains instructions for normal operation, safety, preventive maintenance and
troubleshooting procedures to solve the most common problems. Available in several languages.
2. User Manual (UM)
(If available) Intended for the lab supervisor. Contains information from the IFU and additional
information concerning settings, service, higher maintenance levels and troubleshooting procedures to
solve more complicated problems. Only available in English.
3. Service Manual (SM)
Intended for trained service engineers. Describes maintenance, servicing and repair of the instrument in
detail. Contains detailed descriptions of parts, assembly drawings, modifications, extended
troubleshooting, flow diagrams etc. Only available in English.
4. Installation Manual (IM)
Intended for trained service engineers. Contains instructions and procedures for installation and start-up.
Only available in English.
Manuals are available in PDF and HTML-format and can be downloaded from
www.support.rrmechatronics.com.
1.7 - Starrsed line of ESR instruments
The Starrsed line of ESR automated instruments is unique by the fact that it has automated the Westergren
Method and fully complies with the published reference method, including working with diluted EDTA blood.
The Starrsed line offers several types of ESR analyzers. Our solutions range from tube-based to rack-based
to track-based, the latter resulting in the highest level of automation possible. Laboratories that operate
different Starrsed instruments in different capacities are assured that correlations are precise and fully
reliable.
1.8 - Dilution principle
The principle of adding Diluent to a flow of whole blood is unique. The Interrliner has the capability of
monitoring the air displacement during the aspiration cycle. This is called on-line dilution. The CPU receives
data from the airflow sensor and calculates the syringe speed. Diluter accuracy is ± 3%.
The citrate dilution (4:1) takes place to reduce the influence of HCt (Hematocrit) on the sedimentation
process. Dilution brings the Hct level from 0.45 (considered as a normal level) to 0.36. The ICSH (1993)
recommended the use of EDTA samples with a Hct of 0.35 or less. Dilution errors up to 25% results in a 5%
variation in Hct of the prepared sample. This is within the natural variation in Hct between individual humans
and will not have significant influence on the accuracy of the ESR measurement.
1.9 - Sedimentation measurement principle
The automatic reading of the Westergren sedimentation pipettes is performed by moving an optical sensor
along the pipettes. While the sensor is moving, it is taking a reading every 0.25 mm. The sensor is reading
the absorption of infrared light through the Westergren pipette filled with blood. From these readings, values
at a number of absorption levels are determined. All absorption figures are relative to the darkest and
lightest reading (darkest = 100 % and the lightest = 0 % absorption respectively).
By definition the levels are:
87.5% Cells/ plasma separation
75.0% Hazy detection
50.0% Meniscus detection
Introduction
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MRN-164_2-EN Version 1.08 Starrsed TL