Answer
A – As per 2020 G2 Guidelines no fixed quantity is given. So sampling quantity may vary depending upon the method of analysis to be used for determination. It is impracticable to take large samples.
Various MOUs & Port state Control have their own guidelines of how much sample to be taken.
EMSA, Finland guidelines to take treated ballast water samples
-In line sample is preferred
-Sampling should be aimed to obtain a series of 10 min sample during the discharge and avoid the first & last 5 minutes.
- Sampling for ≥50 microns requires at least 300L of sample water - For indicator microbes = 1L sample
- 10-50 microns – 5L to 6L