What is the representative sample quantity for heroin?

The representative sample quantity for heroin is established to help ensure that the drug evidence collected can be effectively used in legal proceedings and to maintain the integrity of the sample for testing. A sample size of two kilograms is commonly recognized as an appropriate quantity that balances the need for enough material to conduct thorough analysis while still being manageable in terms of collection and storage. This amount often provides sufficient substance for forensic testing, helping to confirm the identity and purity of the sample as well as facilitating the prosecution of drug-related cases.

Understanding why two kilograms is considered sufficient also highlights the principle of sampling in law enforcement. It ensures that samples are large enough to reflect the properties of the bulk substance, ultimately supporting the validity of the evidence presented in court. The other choices either suggest quantities that are too large, impractical for sampling purposes, or are not typical standards recognized within law enforcement practice.