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Overview
Product Description
Advanced™ osmometers and cryoscopes determine the concentration of solutions through
freezing-point depression measurement. Osmometers are used primarily to measure body
fluids such as serum and urine, and cryoscopes are used to determine the freezing points of
various liquids and to detect added water in milk. Application information is available upon
request.
Except for different cooling assemblies, stir/freeze wires, sample sizes and software,
the 3250 and the 4250 are identical to one another. For clarity when replacing parts or
troubleshooting, the instructions indicate any significant differences between the two
instruments.
The Service Manual
This Service Manual contains:
• Instructions for performing repairs
• Guides for troubleshooting operational and mechanical problems
• Circuit system illustrations
• Information about replacement parts and service repairs
This manual is designed to assist service technicians, and does not imply a license to perform
repairs without proper qualifications.
Service Assistance
To contact Advanced Instruments Product Service:
• Call (800) 225-4034 (toll-free within the USA and Canada; after normal business hours,
dial extension 2191)
• Call +US (781) 320-9000 (elsewhere)
• Fax (781) 320-3669
• Email techsupport@aicompanies.com
When calling Advanced Instruments, have the model and serial number from the label on the
back of the instrument, and a description of the problem. Use a telephone as close to the
instrument as possible in order to facilitate making recommended diagnostic checks.
A service technician may assist in making minor repairs over the phone, providing you with
recommended parts (or part numbers), or may issue an authorization (RMA) to ship the
instrument for factory repair.
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