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A solid state laboratory timer for viscosity measurement

Journal of Medical Engineering & Technology

|January 1, 1979

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A new, low-cost laboratory timer is introduced. This versatile stopwatch offers quiet operation and precise 0.01-second resolution up to 99 seconds.

Area of Science:

Scientific instrumentation
Laboratory equipment

Background:

The Harkness Viscometer requires precise timing for accurate viscosity measurements.
Existing laboratory timers may be expensive or lack specific features.

Purpose of the Study:

To describe the design and functionality of a new low-cost laboratory timer.
To present a versatile timing device suitable for general laboratory use.

Main Methods:

Development of a cost-effective timing circuit.
Integration of a digital display for time resolution.
Testing for accuracy and operational quietness.

Main Results:

The developed timer operates at a low cost.
The device functions as a general-purpose laboratory stopwatch.

Related Experiment Videos

It provides quiet operation and counts to 99 seconds.

Achieved a resolution of 0.01 seconds.

Conclusions:

The described timer is a practical and affordable solution for laboratory timing needs.
Its features make it suitable for various experimental procedures requiring precise time measurement.