Explanatory notes
… Brix, Balling, Bates, Gay‑Lussac, Richter, Tralle, Sikes, Stoppani, etc.). Nicholson’s hydrometer is used for solids. … balances ( heading 90.16 ). (b) Certain analysis apparatus which are not floating instruments, for example, … Note), separately presented parts and accessories of apparatus or appliances of this heading remain classified …