Frequently Asked Questions
Frequently Asked Questions About DSC Testing
Find answers to the most common questions about our differential scanning calorimetry (DSC) testing services below. If you do not see your question here, please contact us and our team will be happy to help.
What is DSC testing?
Differential Scanning Calorimetry (DSC) is a thermal analysis technique that measures the heat flow into or out of a sample as it is heated, cooled, or held at a constant temperature. DSC detects physical and chemical transitions such as melting, crystallization, glass transition, curing, and oxidation. It is one of the most widely used techniques for characterizing polymers, pharmaceuticals, food products, and advanced materials.
What materials can be tested by DSC?
DSC can analyze a wide range of materials including:
- Polymers and plastics (thermoplastics, thermosets, elastomers)
- Pharmaceutical compounds (APIs, excipients, formulations)
- Metals and alloys
- Ceramics and glasses
- Composite materials
- Food products (fats, oils, proteins, starches)
- Coatings, adhesives, and sealants
- Electronic materials (solder pastes, encapsulants)
What can DSC measure?
DSC can determine a variety of thermal properties including:
- Glass transition temperature (Tg) – The temperature at which amorphous materials transition from a glassy to rubbery state
- Melting temperature (Tm) – The temperature at which crystalline materials melt
- Crystallization temperature (Tc) – The temperature at which materials crystallize during cooling
- Heat of fusion and crystallinity – The energy associated with melting and the degree of crystalline order
- Oxidative stability (OIT/OOT) – Resistance to oxidative degradation
- Specific heat capacity (Cp) – The amount of heat required to raise the temperature of a material
- Purity – Chemical purity of pharmaceutical and organic compounds
- Curing behavior – Cure temperature, degree of cure, and reaction kinetics for thermosets
How much sample is required for DSC testing?
DSC typically requires only 5 to 20 milligrams of sample material. The exact amount depends on the type of measurement and the expected thermal transitions. In most cases, a few hundred milligrams of material is more than sufficient to run multiple tests including repeats.
What temperature range does your DSC cover?
Our TA Instruments X3 DSC covers a temperature range from -90°C to 725°C, allowing us to analyze materials across a very wide range of applications — from frozen food products to high-temperature ceramics and aerospace composites.
How long does DSC testing take?
A single DSC test typically takes 30 to 90 minutes depending on the temperature range and heating rate. Our standard turnaround time for complete reports is 5 to 7 business days. Rush service is available for time-sensitive projects — contact us for expedited options.
What does a DSC report include?
Our DSC reports include:
- Detailed thermogram (DSC curve) with annotated transitions
- Numerical results for all measured properties (Tg, Tm, enthalpy, etc.)
- Testing conditions (heating rate, atmosphere, sample mass, pan type)
- Reference to applicable ASTM or ISO standards
- Expert interpretation and conclusions
- Raw data files available upon request
What is the difference between DSC and TGA?
DSC measures heat flow and detects thermal transitions (melting, Tg, crystallization). TGA (Thermogravimetric Analysis) measures weight changes and detects decomposition, moisture loss, and volatile content. The two techniques are complementary — DSC tells you about phase transitions and energy changes, while TGA tells you about compositional changes and thermal stability. Learn more in our DSC vs TGA comparison guide.
What is the difference between DSC and DMA?
DSC measures thermal transitions based on heat flow, while DMA (Dynamic Mechanical Analysis) measures mechanical properties (storage modulus, loss modulus, tan delta) as a function of temperature. DMA is more sensitive for detecting glass transitions in some materials, while DSC provides quantitative enthalpy data. Read our detailed DSC vs DMA comparison for more information.
Do you follow ASTM or ISO standards?
Yes. Our testing procedures comply with established standards including ASTM E794 (melting and crystallization), ASTM D3418 (polymer transitions), ASTM E793 (heats of fusion), ISO 11357 (plastics DSC), and other applicable methods. We can test to specific standards upon request. See our complete ASTM and ISO standards reference.
How much does DSC testing cost?
Pricing depends on the type of analysis, number of samples, and any special requirements. We offer competitive rates starting from approximately $75 to $200 per sample for standard tests. Volume discounts are available for larger projects. Contact us for a detailed quote tailored to your specific needs.
Can you help interpret my DSC results?
Absolutely. All our reports include expert interpretation by experienced thermal analysts. If you have DSC data from another laboratory that you need help understanding, we also offer data interpretation consulting services. Visit our guide on how to interpret DSC results for general guidance.
How do I send samples to your laboratory?
After receiving your quote approval, we will provide detailed sample submission instructions including our shipping address, recommended packaging guidelines, and a sample submission form. Most samples can be shipped via standard carriers (FedEx, UPS, USPS). Hazardous materials may require special shipping arrangements.
Do you offer confidentiality agreements?
Yes. We understand the importance of protecting your intellectual property. We are happy to sign Non-Disclosure Agreements (NDAs) and Confidentiality Agreements before receiving any samples or project details. All client data is stored securely and handled with strict confidentiality.
