Protective Clothing Liquid Static Pressure Tester
The Protective Clothing Liquid Static Pressure Tester is designed to evaluate the liquid penetration resistance of breathable protective clothing materials. It measures the ability of fabrics to resist the passage of corrosive liquids such as acids and bases under static pressure. This instrument is essential for testing chemical protective clothing to ensure wearer safety in industrial, laboratory, or hazardous environments.
Application
The instrument is suitable for testing liquid penetration resistance of protective clothing in the following industries and products:
(1) Chemical Industry: acid-proof and alkali-resistant protective suits — assessment of static liquid pressure resistance
(2) Medical and Laboratory Safety: lab coats, gowns, and aprons — verification of barrier performance against corrosive fluids
(3) Industrial Safety: industrial overalls, protective gloves, and aprons — liquid penetration testing for workplace safety
(4) Research and Development: development of new protective textiles, optimization of chemical resistance properties
(5) Quality Control Laboratories: production inspection of chemical protective clothing to ensure compliance with standards
(6) Certification and Regulatory Testing: third-party laboratories performing safety certification tests for protective materials
Standards
The instrument is compliant with the following standards, including related international standards:
(1) GB 24540-2009 – Acid and alkali resistant protective clothing — Liquid static pressure resistance test
(2) LFY-252 – Chinese standard for chemical protective clothing anti-seepage testing
(3) ISO 6530:2010 – Textiles — Protection against liquid chemicals — Determination of resistance of protective clothing materials to penetration by liquids
(4) EN 368:2017 – Protective clothing — Test method for resistance to penetration by liquids under hydrostatic pressure
(5) ASTM F903-18 – Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Liquids
Features
(1) Accurately measures static liquid pressure resistance of chemical protective fabrics
(2) Simulates real-life conditions of liquid exposure on protective clothing
(3) Adjustable liquid column pressure with continuous rising rate control
(4) Suitable for acids, alkalis, and other corrosive test liquids
(5) Provides quantitative measurement of fabric barrier performance
(6) Easy-to-read display for recording maximum liquid column height at first leaks
(7) Compact and durable design for laboratory and production floor use
Technical Parameters
| Item | Specification |
|---|---|
| Test Solution | Acid/base solutions, e.g., 80% concentrated H2SO4 with varying concentrations |
| Rising Rate of Liquid | (60 ± 3) cm/min |
| Maximum Liquid Column | 150 mmH2O |
| Test Range | 0 ~ 150 mmH2SO4 (80%) |
| Pressure Measurement | Static pressure under atmospheric pressure (101.325 kPa) |
| Sample Measurement | Resistance recorded at first three leaks |
Accessories
(1) Sample holder for protective fabric
(2) Adjustable liquid column with pressure scale
(3) Pump or supply system for liquid solution
(4) Safety gloves and splash shields for handling acids/bases
(5) Operation manual
(6) Calibration certificate
Test Procedures
(1) Prepare the protective fabric sample and mount it in the sample holder
(2) Fill the liquid column with the test solution (e.g., 80% H2SO4)
(3) Start the test, allowing the liquid pressure to rise at (60 ± 3) cm/min
(4) Observe the sample until three leaks appear
(5) Record the height of the liquid column at the time of leaks as the fabric’s liquid static pressure resistance
(6) Repeat for multiple samples or different protective materials
(7) Clean the liquid column, sample holder, and surrounding area after testing
Maintenance Information
(1) After each test, rinse and clean the liquid column and sample holder to remove residual acid/base
(2) Inspect the column, valves, and sample holders for corrosion or wear
(3) Store instrument in a dry, ventilated environment
(4) Regularly calibrate the liquid column height and rising rate to ensure accurate measurements
(5) Wear protective equipment when handling corrosive test solutions
(6) Maintain records of calibration and maintenance for compliance documentation
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