08 — Chemical Engineering & Chemistry
Cut Section Model of Different Types of Valves
Set of sectioned display models of commonly used industrial valves, exposing the internal body, seat and closure member. Used to teach valve construction, flow path and selection for piping and process service.
01 — Same Category
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34
Kjeldahl Borosilicate Apparatus
Borosilicate glass digestion and distillation assembly for nitrogen determination by the Kjeldahl method. The distilled ammonia is trapped and titrated to calculate total nitrogen and crude protein content of a sample.
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35
Orsat Gas Analysis Apparatus
Volumetric flue gas analyser with absorption pipettes and a graduated burette for measuring carbon dioxide, oxygen and carbon monoxide in a gas sample. Used to assess combustion efficiency and excess air in boilers and furnaces.
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36
Desiccator
Glass desiccator with perforated plate for storing hygroscopic samples over a desiccant in a moisture-free atmosphere. Routinely used to cool crucibles and dried samples before gravimetric weighing.
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37
Discharge Through Venturimeter, Orificemeter & Rotameter
Flow bench carrying a venturimeter, orifice meter and rotameter in a common circuit with manometers, a pump and a measuring tank. Used to calibrate each meter and to determine the coefficient of discharge over a range of flow rates.
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38
Lab Stirrer, Direct Drive
Overhead direct drive stirrer with variable speed control and chuck for a range of impellers, mounted on a stand. Used for mixing, dispersing and suspending laboratory-scale liquid batches.
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39
Centrifugal Pump Test Rig
Centrifugal pump mounted with sump tank, suction and delivery gauges, measuring tank and energy meter. Used to plot head-discharge, power and efficiency characteristics and to verify the affinity laws at different speeds.
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41
Autoclave
Pressure steam steriliser for media, glassware and instruments, with pressure gauge and safety valve. Used in microbiology and biochemical engineering laboratories for routine sterilisation before culture work.
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42
Laboratory Fermentor
Bench-scale stirred bioreactor with agitation, aeration and control of temperature, pH and dissolved oxygen. Used for batch and fed-batch microbial culture studies, growth kinetics and scale-up training.
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43
Laboratory Refrigerated Heating Bath
Circulating bath with refrigeration and heating that maintains a set temperature above and below ambient. Used to thermostat reactor jackets, viscometers and sample vessels during experiments.
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44
Laboratory Planetary Mixer
Mixer in which the agitator rotates on its own axis while orbiting the bowl, giving complete coverage of the vessel. Used for blending, kneading and homogenising viscous pastes, doughs and powders at laboratory scale.
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45
Digital Water Quality Tester
Portable digital instrument for routine water quality checks, covering parameters such as pH, conductivity, total dissolved solids and temperature. Used for field sampling and classroom demonstrations in environmental and public health engineering.
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46
Digital Ultrasonic Interferometer
Instrument that measures the velocity of ultrasonic waves in a liquid by locating standing wave maxima in a cell with a quartz crystal and micrometer-driven reflector. Used to compute adiabatic compressibility, acoustic impedance and molecular interaction parameters of solutions.
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