5.1 This test method evaluates the ability of the construction and configuration of protective clothing or protective ensembles to resist liquid penetration. In most cases, the conditions used in this test method will not represent actual end-use conditions.

5.2 The one-hour duration of the test is not intended to simulate user exposure to splashes of liquid chemical but rather to provide sufficient time for enough liquid to penetrate to make visual detection easier.

5.3 A nontoxic, non-foaming surfactant is added to water for this test method to simulate liquids of lower surface tensions. Liquids of specific interest can be simulated by treating water to achieve an equivalent surface tension.

5.4 For protective clothing with water-repellent surfaces, the lower surface tension liquid will aid in the evaluation of the construction and configuration of the garment because it is not repelled but wets the protective clothing. This is especially useful for reusable garments whose water-repellent surface interferes with the evaluation of their construction and configuration when new, but is diminished after wearing and washing.

5.5 Fluorescent or colored dyes may be added to the water to enhance detection of liquid penetration into the protective clothing or protective ensemble.

5.6 This test method can be used by both manufacturers and end users to assess liquid penetration resistance. Manufacturers can use this test method to evaluate quality of construction and effectiveness of clothing and ensemble configurations.

5.7 The clothing or ensemble shall be sized to fit the mannequin. It is important that the clothing fit the mannequin well since detection of liquid penetration requires as much contact as possible between the clothing or ensemble and the inner liquid-absorptive garment.

5.8 Results on a mismatched size of clothing or ensemble shall not be used to generalize about a particular construction or configuration. Mannequin fit potentially affects liquid penetration resistance determinations.

5.9 There is no known limit to the kind of protective clothing or protective ensembles that can be evaluated with this test method.

5.10 In some cases protective clothing or protective ensembles that show no liquid penetration during this test method will still fail to protect wearers against specific chemicals due to the material degradation, penetration, or permeation or the toxicity associated with the vapor of liquid chemicals.

5.11 In some cases protective clothing or protective ensembles that show no liquid penetration during this test method will still fail to protect wearers in specific circumstances as, for example, deluge or immersion.

1.1 This test method measures the ability of protective clothing or protective ensembles to resist liquid penetration in the form of a shower spray with surfactant-treated water.

1.2 This test method measures the liquid penetration resistance of the construction and configuration of the overall protective clothing or protective ensemble, but especially of seams, closures, and interfaces with other components such as gloves, boots, hoods, and respiratory protective equipment. It is intended that this test method be used to assess the liquid penetration resistance of protective clothing and protective ensembles as received from the manufacturer and worn in accordance with their instructions.

1.3 Resistance of materials used in protective clothing to permeation or penetration can be determined in accordance with Test Methods F739 and F903, respectively.

1.4 The integrity of vapor protective ensembles is measured by its ability to maintain positive internal pressure with Test Method F1052.

1.5 The values in SI units or in other units shall be regarded separately as standard. The values stated in each system must be used independently of the other, without combining values in any way.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.