Methods; Colour, True And Apparent; Sample Preparation; Measurement - Tintometer Lovibond MD100 Manual De Instrucciones

Methods

GB

Colour, true and apparent

(APHA Platinum-Cobalt Standard Method)
0 – 500 Pt-Co units
Sample preparation (see Chemical method notes, Note 4):
Step A
Filter approx. 50 ml deionised water through a membrane filter with a pore width of 0.45 µm.
Discard the filtrate. Filter another 50 ml deionised water and keep it for zeroing.
Step B
Filter approx. 50 ml water sample using the same filter. Keep this filtrate for sample meas-
urement.
On
Off
PtCo
Zero
Test
PtCo
0.0.0
Zero
Test
PtCo
R ES ULT
20

Measurement

Switch the unit on using the [ON/OFF] key.
The display shows the following:
Fill a clean vial (24 mm Ø) with 10 ml of the filtrated deionised
water (see Sample preparation, Step A), close tightly with the cap.
Place the vial in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The "Method" symbol flashes for approx. 8 seconds.
The display shows the following:
Remove the vial from the sample chamber and empty it completely.
Rinse the vial with the filtrated water sample and fill with 10 ml
filtrated water sample (Sample preparation, Step B).
Close the vial tightly with the cap.
Place the vial in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in Pt-Co-units.
The result is saved automatically.
marks
marks
MD100_7c 03/2020