What are the drop-test standards for humidifiers?

The drop-test standards for humidifiers mainly refer to international, national, and internal enterprise specifications, verifying the protective capacity of packaging by simulating impacts during transportation. The specific standards and test key points are as follows:  

1. International General Standards

1. ISTA (International Safe Transit Association) Series Standards

- ISTA 1A/3A: Commonly used for packaging transportation tests.  

- For humidifiers weighing ≤15kg, ISTA 3A specifies a drop height of 120cm, requiring a combined test of "drop-vibration-drop" to simulate the entire express transportation process.  

- Test orientations include the bottom, top, sides, corners, and edges of the package, prioritizing vulnerable areas.  

- ASTM D4169 (American Society for Testing and Materials Standard)**:  

- Provides test procedures for transportation packaging, determining the drop height based on product weight (e.g., 100cm for products ≤10kg), and requiring drop tests on 6 faces, 4 corners, and 12 edges of the package.  

2. ISO 8185 (International Organization for Standardization):  

- Covers basic safety requirements for humidification systems, indirectly requiring packaging to maintain product structural integrity and no functional damage after drop tests. 

2. Chinese National Standards

1. GB/T 4857 Series (Basic Tests for Transport Packaging)

- Drop Height: Determined by product weight, typically 50–100cm (e.g., 80cm for ≤5kg products, 100cm for ≤10kg products).  

- Test Orientations: Require drop tests on 6 faces, 4 corners, and 12 edges of the package, focusing on the bottom, top, and diagonal corners.  

- Additional Requirements: Some standards (e.g., GB/T 4857.5) also combine pressure and vibration tests to simulate warehouse stacking and transportation bumps.  

2. GB/T 23332 (Humidifier Performance Standard):  

- Requires that after dropping, the product's spray volume attenuation does not exceed 10% of the pre-test value, noise increase is ≤3dB(A), and the water tank has no leakage.  

3. GB 4706.48 (Humidifier Safety Standard):  

- Emphasizes the safety of electrical components after dropping, such as no shell cracking, no loose internal wiring, and avoiding electric leakage risks.  

3. Core Test Procedures and Evaluation Indicators

1. Pre-Test Preparations

- Complete packaging: The humidifier must be packaged according to the factory standard (including cushioning materials, instructions, etc.).  

- Environmental control: Test temperature 23±2℃, humidity 50±5%RH.  

2. Post-Test Evaluation

- Packaging Integrity: No cracking, tape detachment, or cushioning material damage.  

- Product Functionality:  

- Appearance: No shell cracks, no water tank deformation;  

- Performance: Normal spraying after startup, spray volume attenuation ≤10%, no significant noise increase (≤3dB);  

- Safety: Passes electric leakage tests, no loose internal parts.  

The core of drop testing is to verify the protective capacity of packaging for humidifiers through standardized drop parameters (height, direction, frequency), ensuring the product remains usable and compliant after transportation. Enterprises typically formulate specific test plans by combining international/national standards with their product characteristics (e.g., weight, structure), ultimately aiming to reduce the risk of customers receiving damaged products.