| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. TEST SAMPLE DESCRIPTION | |||
| A1 | Sample identification: Material type, grade, batch, and date of manufacture recorded Acceptance: Sample uniquely identified; All data recorded in test lab log; Batch traceability confirmed | Cl. 3 — Sample tracking | OK NC NA HOLD |
| A2 | Sample dimensions: Thickness, width, and length measured and recorded (±1mm accuracy) Acceptance: Dimensions recorded with ±1mm precision; Three measurements per dimension; Average calculated | Cl. 4 — Dimensional measurement | OK NC NA HOLD |
| A3 | Sample mass measured using calibrated balance; density calculated from volume Acceptance: Mass measured to ±1g; Density within spec range (±5%); Calculated from volume and mass | Cl. 5 — Mass and density determination | OK NC NA HOLD |
| B. TEST APPARATUS & CALIBRATION | |||
| B1 | Guarded hot plate apparatus (ASTM C177 / ISO 8302) used for testing Acceptance: Guarded hot plate or equivalent apparatus; Valid equipment; Calibration cert provided | Cl. 6 — Test method selection | OK NC NA HOLD |
| B2 | Apparatus calibrated within last 12 months per ISO/IEC 17025 standard Acceptance: Calibration certificate valid; Traceability to NIST or equivalent; Calibration date within 12 months | Cl. 6.2 — Calibration requirement | OK NC NA HOLD |
| B3 | Temperature sensors (thermocouples) calibrated and uncertainty documented (<±0.5°C) Acceptance: Sensor uncertainty <±0.5°C; Calibration cert provided; Response time documented | Cl. 6.3 — Sensor accuracy | OK NC NA HOLD |
| C. TEST PARAMETERS & CONDITIONS | |||
| C1 | Test temperature set per specification: Typically 23°C mean temperature (or as per spec) Acceptance: Mean temperature 23±2°C; Temperature gradient controlled; Steady-state conditions achieved | Cl. 7.1 — Test temperature | OK NC NA HOLD |
| C2 | Temperature difference across sample maintained: ΔT minimum 20°C (per spec requirement) Acceptance: ΔT ≥20°C; Maintained constant during test; Variation <±2°C over test period | Cl. 7.2 — Temperature differential | OK NC NA HOLD |
| C3 | Sample equilibrated to test conditions prior to testing (minimum 24 hours) Acceptance: Equilibration time ≥24 hours; RH 50±5%; Temperature 23±2°C | Cl. 7.3 — Pre-test conditioning | OK NC NA HOLD |
| C4 | Ambient laboratory conditions controlled: Temperature 23±2°C, RH 50±5% Acceptance: Lab conditions logged; Variation within limits; Data recorder/chart available | Cl. 7.4 — Environmental control | OK NC NA HOLD |