雙量程石油冰點測定儀．

laboratory model automatic cryoscope for molecular weight, solution concentration, and freezing point depression determinations for aqueous and benzene solutions for 2.0 ml samples, featuring:

• two se-lectable ranges:  -2.0 to 0°c and +2.5 to +5.5°c
• results displayed in m°c of freezing point depression
• adjustable bath temperature allowing optimum temperature settings for particular solvents
• 2-step calibration with non-interacting calibration controls
• refrigerator which reaches operating temperature in < 15 minutes
• bath controlled to ±0.1°c
• precise air temperature environment during sample isolation

comes with instruction manual, 24 2.0 ml sample tubes, spare stirring wires, 125 ml each of two standards, 250 ml of bath fluid, test tube rack, and spare temperature probe.  power: 115v 50/60 hz.  (other voltages are $100 extra).  dr cryette a is shipped assembled and ready to use.