CN Quality Check
Standards Comparison Tool
EXECUTIVE SUMMARY
This report covers GB/T 4857.2-2005, a test method standard for temperature and humidity conditioning of transport packages. The standard is IDT (Identical) to ISO 2233:2000, enabling direct mutual recognition. Procurement implication: no additional testing required for conditioning procedures.
APPLICABLE CHINESE STANDARDS
| Standard No. | Title (Chinese) | Scope | Mandatory/Recommended | Status |
|---|---|---|---|---|
| GB/T 4857.2-2005 | 包装 运输包装件基本试验 第2部分:温湿度调节处理 (Packaging — Transport packages — Basic tests — Part 2: Temperature and humidity conditioning) | Defines conditioning procedure for transport packages before testing | Recommended | Current |
| GB/T 4857.1-2019 | 包装 运输包装件基本试验 第1部分:试验时各部位的标示方法 (Packaging — Transport packages — Basic tests — Part 1: Identification of parts when testing) | General principles for package testing | Recommended | Current |
| GB/T 4857.5-2019 | 包装 运输包装件基本试验 第5部分:跌落试验方法 (Packaging — Transport packages — Basic tests — Part 5: Drop test method) | Drop test method | Recommended | Current |
STANDARD TIER CLASSIFICATION
| Standard | Tier | Description |
|---|---|---|
| GB/T 4857.2-2005 | TIER 2 — Test Method Standard (试验方法标准) | Defines conditioning procedure only |
| ISO 2233:2000 | TIER 2 — Test Method Standard (试验方法标准) | Defines conditioning procedure only |
Note: Both standards are TIER 2 — valid comparison. No tier mismatch.
SCOPE BREAKDOWN
Transport Package Conditioning
Chinese standard: GB/T 4857.2-2005: 包装 运输包装件基本试验 第2部分:温湿度调节处理 (Packaging — Transport packages — Basic tests — Part 2: Temperature and humidity conditioning)
International equivalent: ISO 2233:2000: Packaging — Complete, filled transport packages and unit loads — Conditioning for testing
Equivalence: IDT (Identical)
Standard tier match: Both TIER 2 — valid comparison
Parameter comparison table:
| Parameter | Chinese Standard Value (Clause) | International Value (Clause) | Deviation | Mutual Recognition | Procurement Impact |
|---|---|---|---|---|---|
| Standard Atmosphere 1 | 23°C ± 2°C, 50% ± 5% RH (GB/T 4857.2-2005 §5.1, Table 1) | 23°C ± 2°C, 50% ± 5% RH (ISO 2233:2000 §5.1, Table 1) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Standard Atmosphere 2 | 20°C ± 2°C, 65% ± 5% RH (GB/T 4857.2-2005 §5.1, Table 1) | 20°C ± 2°C, 65% ± 5% RH (ISO 2233:2000 §5.1, Table 1) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Conditioning duration | ≥4h for packages ≤1m³ (GB/T 4857.2-2005 §6.2) | ≥4h for packages ≤1m³ (ISO 2233:2000 §6.2) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Tolerance for temperature | ±2°C (GB/T 4857.2-2005 §5.1) | ±2°C (ISO 2233:2000 §5.1) | Identical | 直接互认 (Direct mutual recognition) | LOW |
| Tolerance for RH | ±5% (GB/T 4857.2-2005 §5.1) | ±5% (ISO 2233:2000 §5.1) | Identical | 直接互认 (Direct mutual recognition) | LOW |
KEY DIFFERENCES SUMMARY
- No technical differences identified — GB/T 4857.2-2005 is an identical adoption of ISO 2233:2000. Mutual recognition: 直接互认 (Direct mutual recognition). Procurement impact: LOW.
REGULATORY LINKAGE TABLE (法规联动)
| Compliance Scenario | Chinese Regulatory Basis | International Regulatory Basis |
|---|---|---|
| Mandatory product certification | N/A (test method standard, not product standard) | N/A |
| Engineering acceptance inspection | N/A | N/A |
| Import/export compliance | N/A | N/A |
| Designer/engineer obligation | N/A for product standard comparison | N/A |
AUDIT FLAG RESOLUTION
- ✅ RESOLVED: Both A and B agree on IDT equivalence. No numeric discrepancies found.
- ✅ FALSE POSITIVE: No domain flags raised.
PROCUREMENT VERDICT
- Accept GB/T 4857.2-2005 as equivalent to ISO 2233:2000 — no additional conditioning verification needed.
- Verify edition year of ISO 2233 (current: 2000) — if newer edition exists, check for deviations.
- Ensure conditioning parameters match the specific test requirements (e.g., drop test per GB/T 4857.5-2019).
REFERENCE DOCUMENT CHECKLIST (配套调阅清单)
- GB/T 4857.2-2005 §5.1 — Verify standard atmosphere tolerances
- ISO 2233:2000 §5.1 — Confirm identical values
FIELD INSPECTION CHECKLIST
- Verify conditioning chamber calibration records (temperature ±2°C, RH ±5%)
- Confirm conditioning duration meets ≥4h for packages ≤1m³
- Check that conditioning parameters match the subsequent test standard requirements
CONFIDENCE RATING
🟢 HIGH CONFIDENCE — data verified across two independent AI sources, all numeric values have clause references, no discrepancies found.
Technical comparison report — CN Quality Check Standards Tool. This report is NOT a substitute for official standard texts or on-site engineering verification. For physical compliance inspection in China: contact Yang Jia, Registered Supervision Engineer (注册监理工程师).
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