Analytical instruments and systems 363 3. Analytical measurement and testing Contents 245 + Laboratory thermomters 312 + Contact, Insertion themometers 319 + Temperature meters 328 + Temperature logger 333 Multi meters 246 + pH meters 259 + Conductivity meters 279 + Oxygen meters 286 Hygrometer 344 + Special climate meters 350 Density meter, Pycnometer 352 + Viscosimeter 358 Timers 338 + Clocks 343 Melting point determination 363 + Spectrophotometers 368