eXact Micro 20 - Turbidity Test Procedure; Running Turbidity Test and Using Table

27
SELECT GROUP & MENU
Press and re–press the button to Select Group 8. Press and re–press the button to
select the TR1 test parameter.
2
TURN METER ON
Press the button to power the meter on; the display will show annunciators, followed by
the current selection. It will then display the last reading.
1
RINSE & FILL CELL WITH DISTILLED OR DEIONIZED WATER
Rinse the CELL at least 3 times with distilled or deionized water—rinsing minimizes the
potential for cross–contamination from a previous test. Finally, fi ll CELL to capacity with the
distilled or deionized water.
3
Turbidity test procedure
Follow the steps to ‘SELECT CUSTOMER’ & ‘CONNECT DEVICE VIA BLUETOOTH’ before
proceeding (see page 12).
4
ZERO METER*
Press the button. The cursor will move across the display followed by 100 %T. This will
indicate that the sample is ready for testing.
RINSE & FILL CELL WITH SAMPLE
Rinse the CELL at least 3 times with the water sample you will be testing. Finally, fi ll CELL to
capacity with the water sample.
5
PRESS READ
Press .
6
RECORD RESULT
The cursor will move across the display while the meter measures the sample. Record the value
displayed. This value is automatically stored in TR1, and if using the eXact iDip
®
app, the result
will be stored in the app’s ‘RESULTS’. After testing, rinse cell immediately and clean with brush.
7
USE TABLE
Find the TR1 result in the table below to determine the Turbidity concentration in NTU.
EXAMPLE: A TR1 result of 65.3 (round to 65) equals a Turbidity value of 104 NTU).
8
Turbidity — for 4 mL samples
%T9876543210
90 <7 8 1014161721242627
80 31 35 38 39 41 45 49 52 53 55
70 59 62 66 69 73 76 79 80 83 87
60 90 94 97 101 104 107 111 115 118 125
50 128 132 135 139 142 149 153 156 163 167
40 174 177 183 187 190 198 205 208 215 222
30 226 232 239 246 253 260 267 274 281 288
20 294 305 316 323 333 343 353 364 374 388
10 398 416 430 444 461 479 499 520 545 569
0 597 631 672 718 777 800 >800 >800 >800 >800
121012 BT
*For best accuracy, when testing outdoors in sunlight, place cap over cell cover