Synthetic Blood Penetration- Liquid Barrier
The Synthetic Blood Penetration – Liquid Barrier test is one of two synthetic blood resistance tests offered by Nelson Laboratories to determine a product’s ability to act as a barrier to blood-borne pathogens. The Liquid Barrier test method challenges a sample by direct contact with and without applied pressure.
This test is required by AAMI PB70 guidance to determine the level of protection for drapes. All testing procedures were designed to comply with ASTM Method F1670 and AAMI PB70. In addition to this test, Nelson Laboratories can perform all AAMI PB70 testing.
- ASTM F1670
- ISO 16603
- AAMI PB70
Standard turn around times (TAT) are listed below. Ask an expert for a specific consultation on your product.
|Code||Test||TAT (days)||Request Quote|
|SBP110||Synthetic Blood Penetration, ASTM F1670||10||Add|
|SBP120||Synthetic Blood Penetration, ISO 16603||14||Add|
|SBP701||Synthetic Blood Penetration, ASTM F1670: Set up & prep. (set 32)||Add|
SBP110 - Synthetic Blood Penetration, ASTM F1670
SBP120 - Synthetic Blood Penetration, ISO 16603
SBP701 - Synthetic Blood Penetration, ASTM F1670: Set up & prep. (set 32)
Standard TAT not available for this product
SBP110: 32 specimens recommended for FDA Submission (ASTM F1670 requires minimum of 3 specimens). Each specimen must be 3 x 3 inches (75 mm x 75 mm) minimum. Include 4 extra samples for setup.
SBP120: 32 specimens recommended for FDA Submission; each specimen must be 3 x 3 inches (75 mm x 75 mm) minimum. Include 4 extra samples for setup.
Study OutlineIn the Synthetic Blood Penetration – Liquid Barrier test procedure, test specimens are prepared by randomly cutting the test material into approximately 75 mm x 75 mm swatches. These are conditioned at 21 ± 5ºC and 30 – 80% relative humidity for at least 24 hours.
Individual test specimens are then loaded into the penetration test cell with the outside of the material facing the reservoir. The test cell reservoir is filled with approximately 60 ml of synthetic blood and allowed to sit for five minutes at atmospheric pressure. After the initial five minutes, an external air source is connected to the test cell and a pressure of 2 psig (pounds per square inch gauge) is applied to the sample for one minute. After one minute of applied pressure, the pressure is released and the specimen then sits for an additional 54 minutes at atmospheric pressure which completes the test phase.
The surface of the specimen is observed for penetration during each stage of testing. The results are scored as pass or fail, depending on whether synthetic blood penetration occurred.
The surface tension range for blood and body fluids is approximately 42 – 60 dynes/cm. To simulate the wetting characteristics, the synthetic blood is adjusted to the lower end of this range (42 ± 2 dynes/cm).