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Precision Systems Cryette A™ and Cryette WR™ Cryoscopes

Highly sensitive cryoscopes with reliable operation that automatically lowers bath temperature for high concentrations in research applications. Precision Systems Cryette A and Cryette WR Cryoscopes include all solid-state non-mechanical seven-segment readout with integrating techniques for maximum accuracy and reproducibility.

Manufacturer:  Precision Systems PSY5008

 View more versions of this product

Catalog No. 12-672-1


Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.

  • Instruction Manual
  • 24 x 2mL Sample Tubes
  • A Model has 250mL each of 7% and 10% sucrose-equivalent salt calibration standards (-0.422 and -0.621°H); Dual-Range and WR has 125mL each of 100mOsm/kg H2O and 500mOsm/kg H2O standards
  • Bath Fluid
  • Stirring Wires
  • Test-tube Rack
  • Spare Temperature Probe



Cryoscope; Precision Systems; Cryette A; Dual Range; For use w/2mL petroleum samples, automatic 55mL bath controlled to +/- 0.1degreeC; 115V 50/60Hz; Includes instruction manual, 24 2mL sample tubes, 125mL each

All models obtain molecular weight, solution concentration and freezing point depression determinations for 2mL samples. Additionally, the WR Model includes a digital readout that presents readings in millidegrees C of freezing point depression and digitally displays bath temperature.


  • Choice of three models: Cryette A is a milk cryoscope; Dual-Range Cryette A is used for petroleum applications where water or benzene is the solvent; Cryette WR is a wide-range cryoscope that offers the flexibility of using many solvent types
  • Thermoelectric refrigerator reaches operating temperature in less than 15 minutes
  • Sample readings made in less than 2 minutes
  • Fast-equilibrating 55mL bath ensures exact temperature for each sample; controlled to ±0.1°C
  • Precisely controlled air temperature during sample isolation
  • Two-step calibration with non interacting controls ensures calibration in less than 5 minutes; also, with long-term stability to ensure infrequent calibration
  • Digital display with Special Mode facilitates calibration and allows for observing complete cooling and freezing cycle
  • Zero-stable panel meter that senses seed point
  • Implement APHA and AOAC Official Methods
  • Electrical requirements: 115V 50/60Hz, others available; contact your Fisher Customer Service Representative
  • Shipped assembled and ready to use
Description & Specifications


Petroleum Cryoscope
-2°[ValidTagsXREF.xls]ComplexCharactersTranslationTag!$H$94 to 0° and 2.5° to 5.5°C
115V 50/60Hz
10 in.
Used in measurent of total concentration of petroleum based samples
<2 min.
22 lb.
2 noninteracting controls
Instruction manual, 24 x 2mL sample tubes, spare stirring wires, 125mL each of two standards, 250mL of bath fluid, test tube rack, and spare stirring wires
15 in.
10 to 15 min.
Water and benzene
9 in.