Product Manual

Operator’s Manual V03

5. Calibration

The following section only applies when the Urisys

1100

Urine Analyzer is used with Chemstrip 10 MD* Test

Strips. When using Chemstrip 5 OB or Chemstrip 7 Test Strips, the calibration procedure described below is not

necessary (see Section 4.3).

Overview

The Urisys

1100

Urine Analyzer is calibrated before leaving the factory. When installed, it must be recalibrated with a

Chemstrip Calibration Strip before the first samples are read, and thereafter every seven days. Chemstrip Calibration Strips

consist of a gray plastic material that is standardized to give constant, defined reflectance readings. Calibration strips

should remain in the vial until just prior to use and should only be used once.

The purpose of calibrating the analyzer is to compensate for aging effects that influence the optical system and the gray

reference pad in the strip tray. If the compensation needed is excessive, for example because the reference pad is badly

soiled, or an LED is defective and cannot emit the required amount of light, an error message is displayed (see section

below on calibration errors).

When the Urisys

1100

Urine Analyzer is set to read Chemstrip 10 MD* Test Strips, it automatically requests a new

calibration every week. In addition, when the instrument is installed, the “REPEAT CALIBRATION!” message is displayed

following a successful self check.

Procedure

1. Make sure that the test strip tray is clean and dry.

2. If the message, “REPEAT CALIBRATION” is on the display, press the START

button. If the analyzer is in the Ready-to-Measure mode, use the left function

key to select “Calibr.”. Next, the “START CALIBRATION” message is displayed.

3. Remove a calibration strip from the Chemstrip Calibration Strip container. Be

careful not to touch the pads and do not allow them to come into contact

with urine.

4. Place the calibration strip, with the test pads facing upwards, on the tray so

that its leading edge is held by the clip at the end of the test strips tray. The

retaining bar must be open (see Figures 6 and 7). Before calibrating,

ensure that the tray is clean and dry.

ATTENTION: It is very important that the calibration test strip locks into the

instrument correctly in order to ensure the quality of the calibration.

5. Press the START button. An acknowledging beep sounds. The tray advances

slightly, the retaining bar closes, and the gray reference pad on the tray and

the calibration pads are read.

6. The tray then returns to the start position, and the retaining bar opens. Remove and dispose of the calibration strip. Use

each calibration strip only once.

Regular calibration is necessary to ensure the quality of the results obtained. Roche Diagnostics cannot

warrant the accuracy of results if the system is not calibrated regularly.

Figure 6

Figure 7

* Hospitals may use Chemstrip 10 UA Urine Test Strips (Cat. No. 418003).