ASTM D7907 Determination of Bactericidal Efficacy of Medical Gloves
Some pathogens causing hospital-acquired infections can live on surfaces that have been touched with gloved hands for a long time. An effective antibacterial treatment on or within gloves can lessen the number of viable bacteria on those gloves, decreasing the possibility of germs passing to the most vulnerable patients. ASTM D7907 tests for bactericidal efficacy against a broad spectrum of bacteria to make it easier to compare efficacy between different manufacturers, purchasers, and users.
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ASTM D7907 Introduction
The methods stated in ASTM D7907 describe two quantitative techniques for assessing the bactericidal activity on the surface of medical examination gloves with bactericidal features. They may be used to determine bactericidal activity on either the outer or the inner surface of the gloves. The methods incorporate bacterial challenges in two different formats: Method (A) a saline or buffered saline solution, and Method (B) a saline or buffered saline solution containing an organic load. All the methods depict one form of microbial exposure that may be anticipated in the healthcare setting.
ASTM D7907 Test Method
Saline or Buffered Saline Solution
Challenge bacteria are grown in a phosphate buffer saline in test method A. To do this, a sterile coverslip is used to spread the aliquot of the bacterial challenge on a test specimen.
Saline or Buffered Saline Solution with Organic components
In test method B, the test surface is exposed to organic loading first before the glove contamination stimulation. The protein in the organic load then proceeds to neutralize several bactericides. After the organic conditioning, the site is exposed to target bacteria with the specific organic load. The reduction of the log from the control specimen as well as from the challenge population recovered from the inoculum is measured per time interval.
ASTM D7907 Equipment and Sample Preparation
Sample Detail
Bacterial specimens are used in ASTM D7907
Sample Size
Bacteria incubation time should be 24 to 48 h at optimum temperature. Microbial counts must be greater than ninety percent.
ASTM D7907 Results and Interpretation
ASTM D7907 is helpful for the assessment of the bactericidal effectiveness of material against various germs and situations so that manufacturers can make comparisons. The effectiveness is expressed as log reduction with large log reductions showing high levels of bactericidal properties and a reduced ability to transfer pathogenic microorganisms. These results enable the comparison between glove manufacturers and formulations and aid the healthcare providers in understanding the appropriateness of the gloves to safeguard the vulnerable patient population.
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Tests Related to ASTM D7907
ASTM D7907 is related to tests including ASTM D7160 for the expiry date of medical gloves, ASTM E178 for outlying observations, and ASTM E1054 for microbial inactivators testing.
Use of ASTM D7907 Testing in Various Industries
ASTM D7907 testing is used in many industries, but mainly in the healthcare industry for the proper examination of medical gloves. In hospitals and clinics, the testing is used in identifying gloves that effectively reduce bacterial transfer thus promoting a reduced infection rate in the hospital setting. It is used by the pharmaceutical industry to confirm glove performance when in contact with sterile products.
Materials Commonly Tested with ASTM D7907
The products that are usually tested by this ASTM standard include medical examination gloves, surgical gloves, and protective gloves used in the healthcare, pharmaceutical, and laboratory sectors. These gloves are tested for their bactericidal effect to reduce the possibility of infection.
Safety and Best Practices in ASTM D7907 Testing
Precautions in ASTM D7907 testing are wearing a glove and goggles to avoid coming into contact with bacteria. There should be no contamination thus surfaces should be cleaned and sterilized and procedures followed to keep off bacteria. Correct calibration of equipment is also mandatory and biological wastes must also be disposed of appropriately.
Importance of ASTM D7907
The methods herein describe two analytical tests for determining the bactericidal activity of the medical examination glove with bactericidal functionality in terms of quantitative measures on the surface of the glove. They may be used to determine bactericidal activity inside or outside the glove.
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Where can I get the astm d7907 tested?
You can share your astm d7907 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d7907 test to various testing techniques.
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