| 1 |
Take grab sample
from effluent composite sampler. |
|
| 2 |
Take sample back to lab for
analysis. |
|
| 3 |
Turn on DR2000
spectrophotometer |
|
| 4 |
Press 80 and Read/Enter |
|
| 5 |
Empty one chlorine total DPD
packet in 25 ml. sample vial. |
|
| 6 |
Shake container and press
shift, Timer 7 on machine. |
|
| 7 |
A three minute reaction period
takes place. |
|
| 8 |
Pour 25 ml. of effluent sample
in clean vial. |
|
| 9 |
Place blank sample in meter
and press clear/zero |
|
| 10 |
Meter shows 0.00 |
|
| 11 |
Remove blank and insert
prepared sample vial in meter and press Read/Enter |
|
| 12 |
Record in mg/ l cl |
|