Plan a trial for your application
Two-component primers
With the specified hardener and substrate, compare pot life, degree of cure and corrosion protection.
High-solids coatings
Keep pigments, fillers and temperature fixed. Compare application viscosity, leveling and residue.
Purchase specifications and incoming inspection
Use these properties to compare grades within the product family. Example figures refer to the cited grade or source. Confirm the offered specification, packaging and lead time in the quotation. Aditya Birla YD 128 · Liquid epoxy resin technical data ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Epoxy equivalent weight | g/eq | Epotec YD 128 reference grade 185–194 g/eq | This grade is reported to ASTM D1652. Determine the reporting basis separately for other forms. |
| Viscosity | mPa·s | Epotec YD 128 reference grade 11,000–14,000 mPa·s | 25 °C. The source reports cP, numerically equivalent to mPa·s. |
| Nonvolatile matter | % by mass | Confirm against the offered grade and purchase specification | Applies to a solution or dispersion. Distinguish it from neat resin. |
When approving a sample, record the grade, methods, limits and specification revision. On receipt, match the packing lot number to the lot-specific COA and record the measured values and release decision.
From samples to commercial delivery
Packaging and receiving
Distinguish liquid, solid and solution resins. Check the packaging of resin and hardener separately.
Storage and handling
After cold-related crystallisation or viscosity change, follow the manufacturer’s instructions for handling and retesting before accepting equivalence.
Sample and order lead times
State processing equipment, trial batch size and monthly demand. Confirm same-grade samples, first-order MOQ, staged deliveries and arrival date.
Questions from the plant
Can the same hardener dose be used when epoxy equivalent weights are close?
Check hardener active hydrogen equivalent weight, solids and actual mix ratio. Verify the resulting state of cure.
Why do equal-viscosity resins give different working times?
Compare resin structure, hardener, ambient temperature and mixed batch size.
Report a delivery or batch issue
Include the order number, lot number from the package, label photos and inspection records for the affected lot. When retesting, check Epoxy equivalent weight, Viscosity, Nonvolatile matter.
Request documents for your application
TDS · Technical data sheet
For grade selection and sample approval, specify the grade and revision required.
SDS · Safety data sheet
Specify the country or region of use and the required language.
COA · Certificate of analysis
Request a sample COA during supplier review. For incoming inspection, provide the actual lot number.