LaMotte SMART Spectro Spectrophotometer User Manual

Page 42

SMART Spectro Operator’s Manual 2.11

11. Press

to scroll to

CALCULATE.

NEW CALIBRATION
ENTER STD. 6
ENTER STD. 7
ENTER STD. 8

CALCULATE

12. Press

*ENTER to select

CALCULATE.

SELECT DEGREES
1 DEGREE THRU.0
1 DEGREE
2 DEGREE

3 DEGREE

13. Press

*ENTER to select the

desired curve fi t.

SELECT DEGREES
1 DEGREE THRU.0

1 DEGREE
2 DEGREE
3 DEGREE

Note:

1 DEGREE THRU.0 calculates the best straight line fi t through the data

points and intersects with the origin at 0 ppm, 0 absorbance. This is a classical

Beers Law calibration. If a one point calibration has been performed, the

DEGREE THRU.0 curve fi t must be chosen. 1 DEGREE calculates the best

straight line fi t but without forcing the line through the origin. The minimum

number of standards needed for a calibration is one for

1 DEGREE THRU.0 and

two for

1 DEGREE.

NOTE: 2 DEGREE and 3 DEGREE calculations are not available yet.

14. Press

*ENTER to select the

desired curve fi t type. The display

will show the constraints for the

best fi t line.

KO=0.0000E +00
K1=0.3068E +0A
K2=0.0000E +00
K3=0.0000E+0A
Press EXIT return