... Abbe Refractometer, PH/DDS/TDS Meter, etc.Application:This instrument is used for analyzing & measuring the content & concentration ... propane, butane or liquefied petroleum gas.² Standard accessories: air-compressor, PC software or micro-printer.² LCD Display, touch ... & Weight530X510X580mm & 27kg AE-AP1500 Flame Photometer/Spectrophotometer (With Air-compress, PC software, can test K,Na,Li,Ca,Ba ...