For systems using high purity water, such as in the printing industry, the following table can be used:
|
rlu |
bulk |
sample |
condition |
potential for fouling |
|
|
|
|
|
|
|
300 - 800 |
x |
x |
minimal to no fouling |
none to low |
|
800 - 1,300 |
x |
x |
acceptable |
low |
|
1300 - 3,000 |
x |
x |
marginal but acceptable |
low to very moderate |
|
3000 - 7000 |
x |
x |
marginal |
moderate |
|
7000 - 12,000 |
x |
x |
not acceptable |
moderate |
|
12000 - 20,000 |
x |
x |
not acceptable |
moderate to high |
|
20,000 - 30,000 |
x |
x |
not acceptable |
high to very high |
|
|
|
|
|
|
ATP data should be used as follows:
·
in a relative sense as a
percentage decrease or increase in value
·
time vs. ATP values (trend line)
· comparison
should be on the rate of increase or decrease in ATP
ATP RLU Data should not be used in the absolute
sense unless a specific value has been determined to be a control point value or
“good value”.
For some more basic information about ATP, please
check out the following links: