Hydrostatic Pressure Test Services

The Hydrostatic Pressure test is designed to evaluate a material's resistance to water penetration. This test is used for 510(k) submissions to the FDA.

Table 1. The AAMI gown classification according to the levels of barrier performance

Barrier Performance	Barrier Protection	Resistance measures	Test standards	Test criteria	Acceptable quality level
Level 1	Minimal	Liquid penetration	AATCC 42	Water impact ≤ 4.5g	4%
Level 2	Low	Liquid penetration	AATCC 42	Spray impact ≤ 1.0g	4%
Level 2	Low	Liquid penetration	AATCC 127	Hydrostatic pressure ≥ 20cm	4%
Level 3	Moderate	Liquid penetration	AATCC 42	Spray impact ≤ 1.0g	4%
Level 3	Moderate	Liquid penetration	AATCC 127	Hydrostatic pressure ≥ 50cm	4%
Level 4	High	Liquid and vial penetration	ASTM F1671	Pass	4%

STEMart provides comprehensive hydrostatic pressure test for products such as gowns, drapes, and barrier fabrics in accordance with AATCC 127, ISO 811, AAMI PB70, and EN 13795.

Applicable Standards

AATCC 127 Water Resistance: Hydrostatic Pressure Test
AAMI PB70 Liquid Barrier Performance and Classification of Protective Apparel and Drapes Intended for Use in Health Care Facilities
EN 13795 Requirements and Test Methods for Surgical Drapes and Gowns
ISO 811 Textile Fabrics - Determination of Resistance to Water Penetration - Hydrostatic Pressure Test

STEMart provides you with a thorough and accurate BFE and VFE tests that limit risk for your business and your customers. If you want to learn more detail about our service, or would like to consult with the experts at STEMart, please feel free to contact us.

Online Inquiry

Holiday savings valid through 1/31/2026:

10% OFF All Testing Services
Enjoy an exclusive 10% discount on all our testing services — helping you achieve accurate results while saving costs.
(Use code: HOLIDAY10TS)

Big Savings on Product Orders
Place your orders now and unlock incredible discounts:

$50 OFF orders over $500 (Use code: HOLIDAY50)
$100 OFF orders over $1,000 (Use code: HOLIDAY100)
$500 OFF orders over $5,000 (Use code: HOLIDAY500)
$1,200 OFF orders over $10,000 (Use code: HOLIDAY1200)

All discounts applied at checkout (shipping fees not included in order total).

* The discount amount applies to a single purchase order.