Melvern Nano ZS
Make & Model: Zetasizer Nano ZS Malvern
Location: Materials Characterization Lab 1
Instrument Incharge: Prof. Santanu Bhattacharyya
In-charge Email Id: santanub@nitrkl.ac.in
Instrument Status: Non-Functional
Specification: Dual angle Dynamic Light Scattering (DLS)
• Non-Invasive Back-Scatter (NIBS)
• Static Light Scattering (SLS)
• Electrophoretic Light Scattering (ELS)
Principle: The Zetasizer Nano ZS is a high performance two angle particle and molecular size analyzer for the enhanced detection of aggregates and measurement of small or dilute samples, and samples at very low or high concentration using dynamic light scattering with ‘NIBS’ optics.
Application: Measurement of protein size, electrophoretic mobility of proteins, zeta potential of colloids and nanoparticles
Accelerated Solvent Extractor
Make & Model: ASE 150, Thermo Fisher
Location: Environmental Engineering Laboratory
Instrument Incharge: Prof.(Ms.) Kakoli Karar(Paul)
In-charge Email Id: kkpaul@nitrkl.ac.in
Instrument Status: Functional
Specification: Elevated temperature and pressure reduce extraction times and solvent consumption.
Principle: Extract analytes from solid and semisolid samples in minutes using the Thermo Scientific™ Dionex™ ASE™ 150 Accelerated Solvent Extractor. This system automates extraction, filtration and cleanup of a single sample, accommodates sample sizes. The chemically inert pathway supports acid and alkaline sample matrices and solvents.
Application: Solvent extraction
Fourier transform infrared spectroscopy
Make & Model: Thermofisher, Nikolet iS-10
Location: First Floor
Instrument Incharge: Prof. Santanu Paria
In-charge Email Id: sparia@nitrkl.ac.in
Instrument Status: Functional
Specification: 7800-350 cm-1 optimized, mid-infrared KBr beam splitter
11000-375 cm-1 XT KBr extended range mid-infrared optics
Principle: IR spectroscopy
Application: Characterization of functional groups
Air Compressor
Make & Model: Ingersoll-rand, 253D
Location: Department of Mechanical Engineering
Instrument Incharge: Prof. S. Murugan
In-charge Email Id: murugans@nitrkl.ac.in
Instrument Status: Functional
Specification: Diameter Orifice = 1.59 cm
Diameter of Low Pressure Cylinder = 12.7 cm
Stroke of Low Pressure Cylinder = 8.89 cm
Co-efficient of Discharge = 0.65
RPM of Compressor = N=500
Principle: The reciprocating type compressor consists of a piston which is enclosed within the cylinder & equipped with suction & discharge valves.The piston receives power from the main shaft through the crankshaft and connecting rod. A flywheel/belt wheel is fitted on the crankshaft which is driven by electric motor or diesel engine.Double stage or two stage reciprocating air compressors consists of two cylinders. One is called low-pressure cylinder and another is called high-pressure cylinder.
When piston in a low-pressure cylinder is at its outer dead centre (ODC) the weight of air inside a cylinder is zero (neglecting clearance volume), as piston moves towards inner dead centre (IDC) pressure falls below atmospheric pressure & suction valves open due to a pressure difference.
The fresh air is drawn into the low-pressure cylinder through air suction filter. This air is further compressed by piston and pressure inside & outside the cylinder is equal, at this point suction valves closed.
As the piston moves towards ODC compression of air took place and when the pressure of air is in a range of 1.5 kg/cm² to 2.5 kg/cm² delivery valves opens & this compressed air is then entered into a high-pressure cylinder through the intercooler. This called low-pressure compression.
If suction & discharge stroke took place on both sides of the piston then it is called Double Acting Low-pressure compression.
Suction valves of a high-pressure cylinder open when the air pressure in a high-pressure side is below to the receiver pressure & air from low-pressure cylinder drawn into the high-pressure cylinder.
As piston moves towards the ODC, first stage air is further compressed. When air pressure from the low-pressure cylinder and inside the high-pressure cylinder is equal, suction valves closed.
Now the air is further compressed by piston until the pressure in the High-Pressure Cylinder exceeds that of the receiver & discharge valves open. This desired high-pressure air is then delivered to a receiver. The Same procedure is repeated in every cycle of operation.
Application: Two stage reciprocating air compressors are used in automotive service and body shops, fleet maintenance, machine shops, production and manufacturing lines, wood working shops, dry cleaners, car washes, general maintenance/repair shops and farms.
Metallurgical Microscope
Make & Model: Chennai Metco
Location: Room No.: BM 217
Instrument Incharge: Prof. A Thirugnanam
In-charge Email Id: thirugnanam.a@nitrkl.ac.in
Instrument Status: Functional
Specification: Inverted microscope
Magnification 100, 200, 400 (dry) and 1000 (wet)
Principle: Metallurgical microscope is the optical microscope, differing from other microscopes in the method of the specimen illumination. Since metals are opaque substances they must be illuminated by frontal lighting, therefore the source of light is located within the microscope tube.
Application: For observing metals (metallography)