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4.5.8 User Methods
User Concentration Methods
It is possible to enter and store up to 10 User Concentration Methods.
Therefore you need 2 to 14 standards of known concentration and one blank (deionised
water or reagent blank value). The Standards should be measured with increasing
concentrations and from the brightest to the darkest coloration.
The measuring range for "Underrange" and "Overrange" is defined with –2600 mAbs*
and +2600 mAbs*. After selection of a method the concentration of the lowest and
highest used standard is displayed as measuring range. The operation range should be
within this range to achieve best results.
*1000 mAbs = 1 Abs = 1 E (displayed)
Method Entry Procedure:
1. Select Mode 64 and enter a method number in the range from 850 to 859, e.g.:
Shift + 850 and confirm with Enter key.
Note: If the entered number has already been used to save a concentration the
display shows the query to overwrite:
Press Shift + 0 or ESC keys to go back to method no. query.
Press Shift + 1 keys to overwrite.
2. Choose the required wavelength e.g.: Shift + 2 keys for 560 nm.
3. Press Arrow keys to select the required unit and confirm with Enter key.
4. Press the appropriate numerical key to select the required resolution, e.g.: Shift +
4 keys for [0][.][0][1].
Note: Please enter the required resolution according to the instrument pre-sets:
Range
0.000 ...9.999
10.00 ...99.99
100.0... 999.9
1000 ...9999
Measurement procedure with standards of known concentration:
1. Perform zero with deionised water or reagent blank.
2. Enter the concentration of the first standard; e.g.: Shift + [0][.][0][5] keys
• Press ESC key to go one step back.
• Press F1 key to reset numerical input.
3. Confirm with Enter key.
4. Prepare the first standard, place it in the vial chamber and press Test key.
EN Photometer Series
Max. resolutions
0.001
0.01
0.1
1
4 Operation
EN
25
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