Which equipment must be properly cleaned before sampling?

Proper cleaning of all sampling equipment is crucial to ensure the accuracy and reliability of the sampling results. Each piece of equipment used for sampling can introduce contaminants or residues from previous samples, which may skew the data or lead to false conclusions. By cleaning all sampling equipment thoroughly before each use, you eliminate the risk of cross-contamination, thereby maintaining the integrity of the samples collected.

It's important to understand that various types of sampling gear, like graduate cylinders, automatic samplers, buckets, and dippers, might each hold residues from prior samples or even be susceptible to contamination from environmental factors. Therefore, comprehensive cleaning protocols must be applied to all equipment utilized in the sampling process. This approach aligns with best practices in laboratory and field sampling, thereby ensuring compliance with environmental regulations and quality standards.