C-H-N Analyzer |
| The percentage of elements C, H, N, S and O in an organic compound can be individually or simultaneously analyzed over a wide range of sample matrices and concentrations with this instrument |
| Make/Model |
Elementar Vario EL III |
| Operation Modes |
CHNS, CHN, CNS, CN, N, S and O |
| Detection Ranges* C |
:0.004 – 30 mg abs (or 100%) |
| H |
:0.002 – 3 mg abs (or 100%) |
| N |
:0.001 – 10 mg abs (or 100%) |
| S |
:0.005 – 6 mg abs (or 100%) |
| O |
:0.005 – 2 mg abs (or 100%) |
| *Depending on samples |
: |
| Standard deviation |
:0.1% abs |
| Sample weight |
:0.02 mg up to approx. 1 gm |
| Digestion temperatures |
:950 – 1200°C |
| This instrument is ideally suited for research, quality control and quality assurance applications. Wide range of applications such as analysis of chemicals, pharmaceuticals, synthetic materials, coals, oils and derivatives, geological substances, agricultural products, environmental products etc are met with this instrument. |
| Samples must be non-fluorinated, non explosive, about 10-30mg for solid sample or 25 ml for liquid sample (depending on the components) |
GAS CHROMATOGRAPH – MASS SPECTROMETER |
| Make / Model |
:Varian 1200 L Single Quadrupole |
| Mass Range |
:10-800 u |
| Scan mode |
:Centroid |
| Carrier gas |
:Helium |
| Resolution |
:Unit mass over entire range |
| Library |
:NIST Library |
| Column Specifications |
:Column type – WCOT fused silica
Stationary phase – VF – 5MS
Column length – 30m |
| Maximum temp |
:325°C |
| The applications of this instrument include Qualitative and quantitative determination of molecular species in organic and biological samples, concentration of elements in inorganic samples, separation and identification of unknown compounds, trace analysis and determination of isotopic contents, analysis of herbicides, pesticides, nitro compounds, structural information about molecules etc. |
Inductively Coupled Plasma Atomic Emission Spectrometer (ICP-AES) |
| The atomic spectrum emitted by a sample is used to determine its elemental composition in this instrument. The wavelength at which emission occurs identifies the element, while the intensity of the emitted radiation quantifies its concentration. |
| Make/Model |
:Thermo Electron IRIS INTREPID II XSP DUO |
| Flexible axial and radial view instrument, with high concentration capabilities. |
| Spectral range |
:165 to >1000nm |
| Resolution |
:0.005nm at 200nm |
| Detection limit |
:ppb level |
| CID Detector |
| Microwave Digestor (Milestone) available for sample digestion. |
| The applications of this instrument are in elemental level analysis of environmental samples, pharmaceuticals, research samples, soil and fertilizers, etc. |
5 - 10 ml of aqueous solution required for analysis. Elements to be determined are to be clearly specified |
Thermal analysis system - TG/DTA |
| Thermogravimetric Analysis (TG) determines the weight changes of a sample, whereas Differential Thermal Analysis (DTA) measures changes in temperature between a sample and a reference, as a function of temperature or time. |
| Make/Model |
:Perkin Elmer, Diamond TG/DTA |
| Flexible axial and radial view instrument, with high concentration capabilities. |
| :Ambient – 1200°C |
:165 to >1000nm |
| TG Measurement Range |
:200 mg |
| TG Sensitivity |
:0.2 mg |
| DTA measurement Range |
:±1000mV |
| DTA Sensitivity |
:0.06mV |
| Programmable rate |
:0.01 – 100°C / min |
| Sample pan volume |
:45ml or 90ml |
| Atmosphere |
:Air, inert gas, Oxygen |
| Pure gas flow rate |
:0-1000 ml/min |
| Applications of the TG/DTA instrument are compositional analysis, decomposition temperature, oil volatility measurements, flammability studies, heat of transition, thermal stability analysis, oxidative stability analysis, transition temperature detection etc. |
| Non-explosive, non-corrosive samples about 20mg are required for analysis. Please avoid samples containing Halides and Nitrates. |
Thermal analysis system –DSC |
| DSC (Differential Scanning Calorimetry) measures the amount of heat energy absorbed or released by a sample, as it is heated, cooled or held at a constant temperature |
| Make/Model |
:Mettler Toledo DSC 822e |
| Temperature Range |
:-130 °C to max. 450°C |
| Measurement range |
:± 350 mW at RT |
| Measurement resolution |
:0.04 mW at RT |
| Temperature Accuracy |
:± 0.2°C |
| Temperature reproducibility |
:± 0.1°C |
| Heating rate |
:RT to 700°C in 7 min |
| Cooling rate |
:+ 100°C to - 100°C in 15 min |
| Sampling rate |
:Max 10 values / sec |
| Pure gas flow rate |
:0-1000 ml/min |
The applications of DSC are numerous, either for routine quality control measurements or in research, where high sensitivity and flexibility are important aspects. Investigations can be carried out on samples like polymers, pharmaceuticals, chemicals, liquid crystals, food samples, glasses etc.
Applications include study of melting behavior, glass transition, specific heat anomaly, oxidation stability, chemical kinetics etc. |
| Non-explosive, non-corrosive samples, about 10-20 mg. are required for analysis. |
UV-Vis-NIR Spectrophotometer |
| The optical absorption by samples in the ultraviolet, visible and near infrared regions are measured with this instrument. Near IR spectroscopy is a valuable tool for analyzing aromatic mixtures. This region finds wide acceptance in food and grain industry for the determination of protein, fat, moisture, sugar, etc. Absorption measurements in the UV and visible regions provide information about electronic transitions in a sample |
| Make/Model |
:Varian, Cary 5000 |
Spectral range |
:175 – 3300 nm |
| Wavelength accuracy |
:±0.1nm (UV-Vis), ±0.4nm (NIR) |
| Wavelength reproducibility |
:0.025nm |
| Limiting resolution |
:0.05nm(UV-Vis), 0.2nm(NIR) |
DRS Facility available |
The applications of this instrument include overtone analysis of X-H containing molecules (X=C, O, N, Si), determination of hydrogen bonds, energy gap measurements in solids, study of molecular structure, concentration measurements etc.
Solid/liquid samples up to 100mg/ml. are required for analysis. Thin film samples on glass or quartz substrate required. Solvents should be specified for solid sample analysis in the NIR region. 60mg-1gm of sample required for DRS Measurement |
Scanning Electron Microscope –Energy Dispersive Spectrometer |
Scanning electron microscopy (SEM) is a method for high resolution surface imaging. The SEM uses an electron beam for surface imaging. The advantages of SEM over light microscopy are greater magnification and much larger depth of field. Different elements and surface topographies emit different quantity of electrons, due to which the contrast in a SEM micrograph (picture) is representative of the surface topography and distribution of elemental composition on the surface.
Qualitative elemental analysis, standard less quantitative analysis, X-ray line scans and mapping can be performed with SEM-EDS combination.
The SEM-EDS installed in SAIF, STIC have the following technical specifications. |
| SEM Make |
:JEOL Model JSM - 6390LV |
| EDS Make |
:JEOL Model JED - 2300 |
| Resolution |
:3 nm (Acc V 30 KV, WD 8 mm, SEI) |
|
:8 nm(Acc V 3.0 KV, WD 6 mm, SEI) |
| |
:15 nm(Acc V 1.0 KV, WD 6 mm, SEI) |
| Magnification |
:5 × to 300, 000 × (Both in High and Low Vacuum Modes) |
| Image Modes |
SEI, BEI |
| Probe Current |
: 1 pA to 1mA |
| High vacuum resolution |
3 nm |
| Low vacuum resolution |
4 nm |
| Specimen Stage |
4 nm |
| Specimen Stage |
| Type |
Eucentric |
| Tilt |
+90º |
| Specimen holder |
10 mm dia |
| Maximum loadable specimen size |
:150 mm dia |
FT NMR Spectrometer |
| Nuclear Magnetic Resonance spectroscopy is a powerful and theoretically complex analytical tool Nuclear magnetic resonance (NMR) is a property that magnetic nuclei have in a magnetic field and applied electromagnetic pulse , which cause the nuclei to absorb energy from the EM pulse and radiate this energy back out. |
| Make/Model |
:Bruker Avance III, 400MHz |
Magnet |
:9.4 Tesla super-conducting Magnet |
| Probe |
:BBO 400MHz , with Z-gradient , 2H lock; for observation of nuclei like 1H, 13C, 31P, 15N etc with 1H decoupling,Any of these nuclei can be fully automatically selected and optimally tuned and matched (ATM). |
| Operation Temperature Range |
:360° |
| RF Console |
:Stable lock compatible with pulsed field gradients, gradient shimming with low heat dissipation. Automatic gradient shimming, Deuterium lock. |
| Samples requirements |
Solid Samples, ~ 1 gm, are required for analysis. Sensitivity to moisture, air etc are to be specific
|
| Samples requirements |
:5mg for 1H and 15mg for 13C and other nuclei. Solvent must be specified. Samples must be free of paramagnetic impurities. |
X-ray Powder Diffractometer. |
X-Ray Powder Diffractometry is one of the most powerful and established technique for material structural analysis, capable of providing information about the structure of a material at the atomic level. Low and High temperature measurement facilities are available
The Temperature attachment enables analysis from -170 Deg C to +450 Deg C under vacuum. Change in unit cell dimensions, structural changes at phase transitions etc, as a function of temperature can be determined. |
| Make/Model |
: Bruker AXS D8 Advance |
Configuration |
:Vertical, Theta/2 Theta geometry |
| Measuring circle diameter |
:435, 500, and 600 mm predefined |
| Angle range |
:360° |
| Max. Usable angular range: |
:3° to 135° |
| X-ray source |
:Cu, Wavelength 1.5406 A° |
| Detector |
:Si(Li) PSD |
| Temperature attachment |
| Make /Model |
:Anton Paar, TTK 450 |
| Temperature Range |
:-170 °C to +450 °C |
The D8 Advance X-ray Diffractometer can be used for all X-ray powder diffraction applications such as structural analysis of crystalline solids, determination of unit-cell parameters, determination of crystal morphology etc.
Solid Samples, ~ 1 gm, are required for analysis. Sensitivity to moisture, air etc are to be specific
|
| 1 |
STIC has procured a Liquid Nitrogen Generator as a support facility for instruments in SAIF. Some of the instruments procured in SAIF need liquid nitrogen for their operation. Excess liquid nitrogen produced by the generator are supplied to external users on payment basis.
|
| 2 |
Make/Model : Iwatani Model NL 50
Capacity : 15 Litres per day |
| 3 |
System consist of a nitrogen gas generator (Model GN – 10A) a nitrogen liquifier and a built in storage tank of capacity 40 Litres. This is a water cooled system. |
| 4 |
Liquid Nitrogen has a wide range of applications as coolant for thermal analysis instruments, biomedical instruments, storage of specimen, cryostats etc. |
| |
Procedure for using the chemical / Material Analysis Facility (SAIF) |
| 1 |
Samples for analysis, along with duly filled work order and Demand Draft may be sent to The Director, STIC, Cochin University of Science & Technology Cochin 682 022. The payment should be made by a crossed DD drawn in favour of The Director, STIC , Cochin 682 022 payable at Ernakulam. Payments can also be made by cash in the office of STIC. The results will be sent to the user only after receiving payments. |
| 2 |
Samples should be submitted separately for each analysis (except thin films). Samples should be packed well in airtight vials. |
| |
For efficient use of the facility, users are requested to comply with the following. |
| 1 |
Be specific with respect to the nature of measurements/ analysis to be made, indicating solvents, temperature range and other details, if any. |
| 2 |
For measurements in person, inform us well in advance and start the trip only after getting appointment |
| 3 |
Complaints regarding the measurements should be brought to the notice of Director, STIC immediately after the receipt so that corrective action can be taken. |
| 4 |
Acknowledge the services rendered by SAIF in all your publications and thesis to expose the facilities to other users. |
| 5 |
Send us a copy of your reprints (involving measurements done at the SAIF) and such documents as thesis (only acknowledgement section), reports etc for reference to other users. |
| 6 |
Write to us about the requirements of a new facility, which will have sufficient utility for workers in this region of the country. User suggestions are discussed at the FMC meeting for recommendation to DST for funding. |
| 7 |
Expose your colleagues and friends in other institutions about the facilities available in SAIF, Cochin so as to enlarge our user – base. |
| 8 |
Any special help, other than routine analysis, will be treated as constancy service for which charges will be extra. |
