In real-world applications, water exposure rarely occurs as full immersion. Instead, products are far more likely to experience angled rain, splashing water, and irregular spray during daily use.
This is why IPX3 and IPX4 waterproof tests are frequently specified together in international standards, customer requirements, and certification documents.
IPX3 evaluates resistance to directional water spray, while IPX4 extends protection to splashing from all directions, forming a complete and realistic splash-level waterproof assessment.
As a professional environmental test equipment manufacturer, LIB industry provides reliable, standard-compliant IPX3/IPX4 rain test chambers, supporting manufacturers from R&D validation to mass production quality control.
The IPX4 waterproof test, defined under IEC 60529, evaluates whether a product can withstand water splashing from any direction without harmful effects.
IPX4 Test Requirements:
Water splashed from all directions
Uniform and continuous exposure
No harmful water ingress permitted
Test duration and water flow strictly defined by the standard
IPX4 is widely considered the baseline waterproof level for everyday environments, covering kitchens, bathrooms, outdoor installations, and industrial workplaces.
Before reaching the all-direction splash requirement of IPX4, many products are evaluated under IPX3 conditions.
The IPX3 waterproof test simulates water spray at angles up to 60° from the vertical, representing wind-driven rain or slanted spray exposure.
IPX3 Test Focus:
Directional spray from defined angles
Controlled flow rate and spray pattern
No harmful water ingress
In practical testing scenarios, IPX3 and IPX4 are almost always required together, as they complement each other and reduce certification risks.
The IPX3 / IPX4 rain test chamber by LIB industry is specifically designed to perform splash and spray waterproof testing in full compliance with IEC 60529.
It accurately simulates:
Angled water spray (IPX3)
Multi-directional water splashing (IPX4)
This system is widely used in product development, type testing, third-party certification, and production inspection, offering both high accuracy and long-term stability.
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LIB industry IPX3/IPX4 rain test chambers adopt a precision oscillating tube system, combined with a closed-loop water circulation unit.
During IPX3 testing, water is sprayed at controlled angles up to 60° from the vertical
During IPX4 testing, the oscillating tube provides uniform splash coverage from all directions
All key parameters — oscillation speed, spray density, water flow rate, and test duration — are programmable and monitored via the control system, ensuring repeatable and auditable results.
Oscillating Tube Specification:
Type: Oscillating tube (IPX3 / IPX4)
Radius: 400 mm (standard configuration)
Material: Stainless steel, corrosion-resistant
Spray holes: Precisely machined for uniform distribution
Industrial-grade SUS304 stainless steel construction
Long-term resistance to corrosion and moisture
Available in with-housing and no-housing designs
Motor-driven turntable ensures 360° exposure of the DUT
Adjustable rotation speed
Customizable turntable diameter for large or irregular products
Optional waterproof power supply for energized testing
Integrated closed-loop water circulation system
Stable water pressure and flow during extended tests
Built-in 1.5 mm filtration system removes debris
Reduces water consumption and maintenance frequency
Touchscreen human-machine interface
Programmable IPX3 / IPX4 test cycles
Real-time monitoring of test parameters
Simple mode switching and user-friendly operation
To accommodate different product sizes, testing environments, and protection level requirements, LIB industry offers highly flexible IPX waterproof testing solutions, covering both IPX3/IPX4 rain test chambers and the complete IPX1–IPX9K test range.
For IPX3/IPX4 splash and spray testing, LIB industry provides multiple configuration options, including:
Standard upright rain test chambers for laboratory and routine testing
No-housing rain test systems for large, open, or irregular products
Large walk-in rain test rooms for fully assembled equipment
Enlarged oscillating tube radii to ensure full spray coverage
Non-standard chamber dimensions tailored to specific DUT sizes
Customized turntables, with adjustable load capacity and diameter
Beyond IPX3 and IPX4, LIB industry delivers a complete line of waterproof test equipment covering IPX1 to IPX9K, enabling customers to build a unified and expandable testing system:
IPX1 / IPX2: Vertical and inclined dripping test chambers
IPX3 / IPX4: Splash and spray rain test chambers
IPX5 / IPX6: High-pressure water jet test chambers
IPX7 / IPX8: Immersion test tanks
IPX9K: High-temperature, high-pressure water jet systems
From compact enclosed chambers to large walk-in rain test rooms, LIB industry enables manufacturers to standardize all IPX waterproof testing with one reliable supplier, reducing certification complexity while ensuring consistent, repeatable test results.
Q1: Can the turntable of the rain test chamber be made larger?
Yes. The turntable size can be customized according to DUT dimensions and overall equipment structure. LIB industry fully supports non-standard customization while ensuring safety and compliance.
Q2: What is the standard size of the water tank?
According to IEC 60529, the reference size for no-housing IPX1–IPX6 testing is 800 × 1500 × 1000 mm. Actual tank size varies depending on equipment configuration and test requirements.
Q3: How long can one full water tank support testing (IPX1–IPX9K)?
LIB industry rain test chambers use a water circulation system, allowing long-duration continuous testing without frequent refilling, while maintaining stable water pressure and flow.
Q4: What is the material of the nozzles used in IPX3/IPX4 testing?
The nozzles are made of stainless steel. IPX3/IPX4 systems use 400 mm oscillating tubes to ensure uniform spray coverage and standard-compliant simulation.
Q5: After one test cycle, does the water go through a filtration system again?
Yes. During return flow, water passes through a 1.5 mm filtration system, removing debris and maintaining water cleanliness.
Q6: Will the oscillating tubes loosen after long-term use?
The oscillating tubes feature a detachable structure secured by screws. Loosening is rare, and retightening restores stability if needed.
Q7: For no-housing IPX3/IPX4 systems, how are oscillating tube positions defined?
Oscillating tubes with a radius greater than 800 mm are installed in the upper position, while tubes ≤ 800 mm are installed in the lower position, ensuring compliant spray coverage.
IPX4 waterproof testing — supported by IPX3 validation — proves that products can withstand real-world splash and spray exposure.
By choosing LIB industry IPX3 / IPX4 rain test chambers, manufacturers gain:
Faster certification preparation
Reduced test failure risk
Stronger and more credible waterproof claims
Contact LIB industry today to configure your IPX1–IPX9K waterproof testing solution — from standard upright rain test chambers to custom walk-in systems — and turn waterproof performance into measurable market confidence.
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