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.
.
Category
- Material Characterization » Thermal Characterisation
Booking Details
Rate of temperature: 10°C /Min to 20°C/Min.
Gas: Nitrogen/Zero Air.
Sample Form: Powder
Facility Management Team and Location
email ID:- tga.chem@csif.iitb.ac.in
Prof. Sanjog Nagarkar.
Prof. Srinivasan Ramakrishnan.
Prof. Guruswamy Kumaraswamy.
Prof . Narendra Sudhir Shiradkar.
Facility Features, Working Principle and Specifications
Facility Description
The Thermo Gravimetric Analyzer (TGA) measures a sample's change in weight as a function of temperature, enabling detailed analysis of reactions such as dehydration, thermal decomposition, evaporation, and oxidation. Additionally, Differential Thermal Analysis (DTA) detects endothermic and exothermic reactions during phase transitions, melting, crystallization, decomposition, and glass transition temperatures.
Rigaku’s TGA utilizes a horizontal differential triple-coil balance, designed to cancel out fluctuations and ensure highly accurate weight change measurements, providing robust data for thermal analysis.
In thermogravimetry, measuring the sample’s change in weight enables us to analyze the reaction temperature and the rate of weight change in reactions such as dehydration, thermal decomposition, evaporation, oxidation. Differential thermal analysis (DTA) measures the endothermic or exothermic reaction temperatures such in transition, melting, crystallization, dehydration, decomposition, oxidation and glass transition temperature.
Sample Preparation, User Instructions and Precautionary Measures
- At least 20 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 sample information form.
Charges for Analytical Services in Different Categories
Thermo Gravimetric Analyzer | |
| Internal Users | 1. Rs. 50 per sample for standard measurement 30-500 °C @ 10°C/min. |
| 2. For measurements above 500 °C the charges will be 100 Rs/hour/sample. | |
| External Users (Academic) | 1. Rs. 100 per sample for standard measurement 30-500 °C @ 10°C/min. |
| 2. For measurements above 500 °C the charges will be 200 Rs/hour/sample. | |
| External Users (National R&D labs) | 1. Rs. 500 per sample for standard measurement 30-500 °C @ 10°C/min. |
| 2. For measurements above 500 °C the charges will be 700 Rs/hour/sample. | |
| External Users (Industry & Non-Govt. Agency) | 1. Rs. 750 per sample for standard measurement 30-500 °C @ 10°C/min. |
| 2. For measurements above 500 °C the charges will be 1000 Rs/hour/sample. | |
Note: 70 % of instrument time will be reserved for internal samples.
| |
For Thermal Analysis, standard ramp is 10 ℃/min. Heating rates less than standard rate will be charged double.
Applications
TGA-DTA analysis.
Sample Details
Non explosive and non-corrosive
N2 and Zero Air
Powder form.
Sample should be in pure form