biochrom ASYS EXPERT PLUS User manual

January 2010 Expert Plus Quick Start Guide Version 2.0
BIOCHROM ASYS EXPERT PLUS MICROPLATE READER
QUICK START GUIDE
1. Turn on the instrument. Connect instrument to a power source using the appropriate power
cord.
Check user’s manual for important safety information.
2. The display will show the main menu.
Figure 1 Expert Plus Display and Keypad
To select options on the screen use the arrow keys to position
cursor and the green button to confirm your selection. The red
button can be used to return to the main/previous menu.
3. Connect the instrument to a printer connecting the printer cable to the parallel port at the
back of the instrument to the printer. Select printer in the onboard software by selecting
2)SETUP instrument and 1)Printer. See http://www.biochrom.co.uk/faq/8/microplate-
instrumentation.html for a complete list of compatible printers.
4. To measure a plate, first define a method.
5. In main menu select DEFINE Method. A new method can be defined at this point or an
existing method can be edited.
6. Select START a new method.
7. Select the measurement and reference wavelengths by scrolling through filters using the
right and left arrow keys.
Note: A reference reading is recommended to account for optical interference that
may result from the plate. For reference reading, select a wavelength that the
sample of interest does not absorb.
7. Shaking or kinetics can be selected in the filters method definition window.
For shaking: Press F2. A new window will open, select time in seconds using the
number key pad. Select mode (slow, medium, fast and intensive) using the up and
down arrow keys to move the cursor and the right/left arrow to scroll through the
mode options. Press F4 to confirm choices or F3 to discard.

July 2010 Expert Plus Quick Start Guide Version 1.0
For kinetics: Press F4 to select interval in seconds and number of readings using the
number key pad. Press F4 to confirm choices or F3 to discard.
If shaking and/or kinetics options were selected, the filters method definition window will
show ON after shaking and/or kinetics.
8. Next, define the plate layout. For controls, standards and samples, replicate direction can be
selected under F3, Options. F1 selects the type, F3 selects horizontal or vertical replicates
and F4 positions control in the plate. Press place to select the well of choice. Continue the
plate layout is completed. Use the backspace arrow to erase choices.
Table I. Key to Control and Standards used in Plate Layout
Code
Control Type
When to Use:
BK
Blank
The absorbance of the blank is automatically subtracted
from the absorbance of all other wells on the plate.
NC
Negative control
Use for qualitative/screening tests
PC
Positive control
Use for qualitative/screening tests
LP
Low positive
Use to define range of positive samples
HP
High positive
Use to define range of positive samples
CO
Control
Use as required
QC
Quality control
Use as required
ST
Standards
Use for quantitative determinations; a maximum of 16
standards can be used.
Samples can be placed either individually by moving the cursor to the desired
location or all wells can be filled with individual samples by selecting F2, Fill All.
9. Press enter to move to the next method definition box. If a kinetic measurement was
selected in a previous option, the kinetics definition options will be displayed (if not continue
on). Select enter to reach next window.
10. Press enter to get to the next method definition: standards. Use this screen to enter the
values of the standards, the units for the concentration and to choose the curve-fit method.
Press enter.
Choose the F1, Quick, for entering standards using a dilution or multiplication factor.
12. If measurements are to be analyzed, select method to be used. Options include:
Method
When to Use:
Factor
If a batch-specific calibration factor is used

July 2010 Expert Plus Quick Start Guide Version 1.0
Elimination
If individual controls must meet set criteria
Transformation
If a calculation is to be applied to the entire plate
Thresholds
If samples are assigned to groups based on minimal
measurements or transformation value
Validation
If controls must meet set criteria for a test is to be
considered to be valid.
13. The next page will prompt the user to configure the printout. Press enter to confirm choices.
14. Name and save the new method using Replace (to replace existing method) or Insert (to add
to method menu). Enter a name for the method using the alphanumeric function. Press
enter to save method.
15. To run the method, position cursor to the first position in the main menu. The plate carrier
will move out, allowing you to load the microplate. Enter a plate ID. Press the F3 key to select
the post run option, printer serial or none (if neither printer nor PC is connected). Results are
stored in the memory and can be recalled later, using the recall plate data option.