it can help distinguish components in the drug. >> we may call it heroin, refer to it as heroin, but it usually isn't. sometimes other cutting agents and then sometimes very dangerous chemicals. >> what we've seen more recently, especially during covid, is big supply chain disruptions of established cartels, so you have a lot more experimentation, a lot more -- a lot of new chemicals, synthesis methods being used to manufacture the same end product that's all being called heroin or fentanyl, but what's actually in them is being changed. >> these machines may represent the future, but for now they are costly. just a handful of groups like louise's around the country even have access to them, which is