Operational Keys; Otz (One Time Zero) - VWR MCP 100 Manual De Instrucciones

On
Off
METHOD
Mode
METHOD
Zero
Test
METHOD
0.0.0
Zero
Test
METHOD
RESULT
Zero
Test
Zero
Test
10

Operational keys

Switch the unit on using the [ON/OFF] key.
The display shows the following:
Select the required test using the [MODE] key.
Scroll Memory (SM)
To avoid unnecessary scrolling for the required test method, the in-
strument memorizes the last method used before being switched off.
When the instrument is switched on again, the scroll list comes up with
the last used test method first.
The display shows the following:
Fill a clean vial with the water sample up to the 10 ml mark, screw
the cap on and place the vial in the sample chamber making sure that
the marks are aligned.
Press the [ZERO/TEST] key (see OTZ).
The "Method" symbol flashes for approx. 8 seconds.
The display shows the following:
After zero calibration is completed, remove the vial from the sample
chamber. The characteristic coloration appears after the addition of
the reagents.
Replace the cap on the vial and place in the sample chamber making
sure that the marks are aligned.
Press the [ZERO/TEST] key.
(For Countdown / reaction period see page 11)
The "Method" symbol flashes for approx. 3 seconds.
The result appears in the display.
The result is saved automatically.
Repeating the test:
Press the [ZERO/TEST] key again.

OTZ (One Time Zero):

The zero setting is held in memory until the instrument is switched
off. It is not necessary to perform a new zero each time, if the water
samples under test are from the same body of water and the conditions
of testing are the same.
The zero setting can be repeated each time if necessary.
Repeating the zero:
Press the [ZERO/TEST] key for 2 seconds.
VWR ver 1 23.01.2018