External users: registration to be carried out only through I-STEM portal
Additional information about sample and analysis details should be filled in the pdf form provided in the I-STEM portal under “DOWNLOAD CSRF”
Internal users (IITB): registration to be carried out only through DRONA portal
Additional information about sample and analysis details should be filled in the pdf form provided here.
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Category
- Material Characterization » Thermal Characterisation
Booking Details
Facility Management Team and Location
Facility Features, Working Principle and Specifications
Facility Description
The Nexta STA300 has a temperature range from ambient to 1450 ℃, with horizontal digital dual beam balance system.
The TGDTA Instrument measures weight loss and thermal properties of a sample in a single experiment as a function of temperature.
Simultaneous Thermogravimetric Analysis is a method in which thermogravimetry and differential thermal analysis are combined and measured simultaneously by a single apparatus.
Thermogravimetry (TGA) is a technique that measures mass change in a sample as a function of time and temperature, and it is used to detect evaporation, decomposition, oxidation and other effects of temperature change that cause mass changes.
Differential Thermal Analysis (DTA) measures the temperature difference between a sample and a reference as the temperature is increased. Changes in the sample, either exothermic or endothermic, can be detected relative to the inert reference. Thus, a DTA curve provides data on the transformations that have occurred, such as glass transitions, crystallization, melting and sublimation.
Sample Preparation, User Instructions and Precautionary Measures
- At least 30-40 mg of sample should be submitted.
- Sample size should be < 5mm in diameter and < 2.5mm in thickness.
- Samples containing halogens should not be sent and will not be accepted for analysis.
- Samples containing corrosive substances that will react with Aluminium/Platinum/Ceramic pans should not be sent for analysis by TG-DTA.
- Samples should not be toxic or hazardous.
- Radioactive material, unstable and explosive compounds are not accepted for analysis.
- Interpretation of spectra is NOT undertaken.
- Samples containing alkali metal oxides, hydroxides, heavy metals, alkali metal halides, nitrates, or large amounts of sulphur heated in a platinum crucible can erode the crucible.
- If heavy metals like lead, bismuth, tin, arsenic, silver, mercury, copper, Selenium, tellurium, etc. are present then do specify them in the MSDS form.
Charges for Analytical Services in Different Categories
| IITB User | IITB Monash | Academic Institutes | National Lab / R&Ds; Sine (letter from SINE reqd.) Research Park (MSME) (letter from RP reqd.) | Start-Up /MSME/ Research park - Big Industry | Industry |
| (No GST) | (Plus 18% GST) | (Plus 18% GST) | (Plus 18% GST) | (Plus 18% GST) | (Plus 18% GST) | |
Heating Program: Temp. Range @ 10 oC/min |
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RT - 600 oC | 400 | 400 | 800 | 2000 | 3000 | 4000 |
RT - 800 oC | 500 | 500 | 1000 | 2500 | 3750 | 5000 |
RT - 1000 oC | 650 | 650 | 1300 | 3250 | 4875 | 6500 |
RT - 1200 oC | 800 | 800 | 1600 | 4000 | 6000 | 8000 |
RT - 1450 oC | 1000 | 1000 | 2000 | 5000 | 7500 | 10000 |
Applications
- Changes in mass due to decomposition, oxidation, evaporation, or combustion.
- Volatilization rate of materials, Moisture content & Solvent content
- Thermal Stability for quality assurance and safety purposes.
- Kinetics analysis.
- Additives, Polymer content, Filler content, etc.
- Glass transitions, Endothermic(Melting) and Exothermic reactions (Crystallization)
Sample Details
Non-explosive, non-corrosive, non-toxic, halogen-free, non-carcinogenic.
The sample size should be preferably in powder/liquid form or small granules.
Nitrogen, Argon, Oxygen and Air
The sample size should be less than
- 4 mm in diameter and
- 2.5mm in thickness.
- Powder and liquid samples preferred
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