A synthetically prepared waste water may be used to gain a working knowledge of the operational parameters and purification efficiencies. The Bench Top Aerobic Digester is designed as a comprehensive study facility of biological water treatment process by means of the continuous activated sludge. The unit is supplied with manuals that describe each component of the system, installation and utilization procedures and give many exercises.
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The hydraulic system applies either a tensile or compressive loading to specimens. Extension of the specimen is monitored using an extensometer for work on stress/strain curves and the Modulus of Elasticity. This Universal Material Tester is a bench top unit for training purposes. The applied force to the specimens is created using a digital pressure sensor and shown on the Digital Interface supplied. An elongation sensor is also supplied for use in bending, compressive and shear testing. Simple operation and robust construction make the unit suitable for student experiments. The round threaded tensile specimens are installed between upper and lower fixings using the mating threads in each fixing. A wide variety of options are also available. Data Acquisition Software is supplied as standard to enable the test parameters to be captured, displayed, reviewed and printed.
Experimental Capabilities:
Tensile Strength Percentage Elongation
Tensile and Compressive testing Recording of stress-strain diagrams Modulus of Elasticity testing.
The device comes without a heating source and can be heated through a kerosine stove, electrical heater or even an open fire. A device designed for total elimination and/or inactivation of microorganisms from medical devices and related products using pressurized steam (i.e., moist heat) as the sterilizing agent; it is used for products non-sensitive to high temperature, water, or steam. It includes a treatment chamber with an inner container, it may be intended to sterilize wrapped and/or unwrapped devices.
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Rockwell Hardness Tester Electronic Engineering Lab
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Water Pressure Tester Power type
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The equipment consists of a ten litre reactor vessel mounted on a vacuum formed plastic base, with a liquid feed pump, air supply and instrumentation for monitoring and controlling the process.
The porous liner is removable for cleaning, and a spare liner is supplied.
Waste water is drawn from a floor-standing feed tank (not supplied) by a DC motor driven peristaltic pump. Rotational speed and thus flow rate, are accurately set by a ten-turn potentiometer. The pump delivers the feed to the reactor vessel through a transparent lid.
The cylindrical wall of the reactor is made from a porous plastic material to retain the suspended solids while allowing treated water to pass through to the outer, annular exit chamber. This design allows the essential features of the aerobic treatment process to be studied without the distractions of having to settle the solids adequately enough for external recycle - a well known laboratory problem.
Air is supplied at a measured rate by a small compressor, and discharges into the base of the reactor via a spider-arm dispenser, designed to prevent blockages as well as to produce sufficient bubbling for stirring and reaction.
Discharge is by gravity to a floor-standing product tank (not supplied).
The reactor temperature is maintained by a 3-term controller which varies power to an immersion heater within the vessel. Any temperature between ambient and +35deg C may be selected, the best conditions being a few degrees above the diurnal maximum in the user's laboratory.
The liquid level in the reactor is maintained at a constant value of 5-10 litres, by an adjustable overflow device connected to the outer annular chamber of the vessel.
Features:
Automatically retrieves test data and inspects the stress relaxation performance of the specimen. (e.g. stress relaxation rate, relaxed stress, relaxation rate, etc.)
Splitting the sampling stage into four sub-stages and applies different sampling cycles in consideration of the logarithm characteristic of time, improving the reliability of data greatly.
Real-time drawing of curves of remaining load with time, or temperature with time.
Support for 100-hour tests. Test time can be assigned at will. E.g. 24-hour test.
Closed loop control of channels such as load, displacement, deformation, etc. Smooth switching in between.
Algorithm to predict specimens stress relaxation performance after 1000 hours (or any specified value in hours), with the option of single or double logarithm. Capable of predicting with standard specimen data or real-time collected data (Suggested). Integrated with an extensive specimen library to improve the precision and reliability of testing results.
Intended use:
To transfer liquids in clinical laboratory settings applicable for molecular/PCR & sterile microbiological works.
Used to close paper crepe packs for steam sterilization. Easy released pressure sensitive adhesive, easy to tear paper, easy to remove.
Pressure sensitive adhesive
Paper-based adhesive tape
Leaves no residue
Does not damage the surface to which it is applied.
Plain (without sterilization indicators)
Maintains integrity and sticks to surface during steam sterilization cycle and drying temperatures.
Size: width 17-21mm x length 48-52m.
Flocculation Testers (also known as Jar Testers) are designed for a range of applications - such as testing the efficiency of flocculation or precipitation agents
Digital display of stirring RPM.
Timer function.
Date and Time.
Illuminated back panel.
Height adjustment option for the stirring blades during operation.
Continuously variable stirring speed (lab versions only.)
Nitrile, sterile pair packed, powder free examination glove featuring extended cuff.
Sterile glove made from a synthetic, nitrile formulation
Packed as a pair of gloves per pack
12 in. extended cuff for additional protection
Gamma sterilized minimum 25kGγ to provide sterility
Textured fingers provide extra grip and reliability
High elasticity with barrier protection and puncture resistance
Ideal solution for a range of sterile examination (non-surgical) procedures
Tested for use with chemotherapy drugs.
Pendulum Impact Tester Electronic Engineering Lab
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Water Pressure Tester Hand type
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Skipping rope for individual skipping, length 3 metres, diameter 1 centimeter.
Made of soft polyester threads, divided into eight strands, tightly woven, no handles (heat sealed at both ends).
Pack includes ropes of assorted colours.
Set of 3 full colour posters, made of synthetic paper, printed in English and with Braille printing/embossing.
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Flocculation Testers (also known as Jar Testers) are designed for a range of applications - such as testing the efficiency of flocculation or precipitation agents
Illuminated back panel
Height adjustment option for the stirring blades during operation
Continuously variable stirring speed (lab versions only).
Digital display of stirring RPM
Timer function
Date and Time.
Digital Digester COD
....-lab-1552900294.jpg "Pendulum Impact Tester (25J)")
Pendulum Impact Tester (25J) has an anvil and pillar which have replicable impact profiles for supporting the notched specimens prior to testing. A heavy hammer swings on a pre-defined radius, set by the hammer arm. A sturdy bench top mounted unit for the study of notched bar impact strength tests. The initial energy of the hammer can be varied by changing the starting weight and/or the start height of the hammers swing this can be varied between 3 set positions. A sturdy base plate with protective guard surround houses all the components, the guard has a lockable door for ease of access when setting the test but also security whist not in use. As the hammer swings through its radius, it impacts on the specimen and the distance it travels passed the specimen is measured on an integral scale shown in degrees.
Experimental Capabilities:
To determine notched impact energy absorption.
The influence of starting mass, starting height on the overall potential energy of the swinging mass.
Notched bar impact strength, Charpy test.
Understand the influence of materials and their properties on notched impact.
Observe and evaluate fracture surface characteristics from broken samples.
Understand the influence of notched shape and cross sectional area on the notched bar impact.
