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Related Concept Videos

Chemical Agents for Microbial Control01:27

Chemical Agents for Microbial Control

Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
Cleaning, Sterilization, and Disinfection01:30

Cleaning, Sterilization, and Disinfection

Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Methods of Sterilization II: Chemical Methods01:30

Methods of Sterilization II: Chemical Methods

In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Hand hygiene01:23

Hand hygiene

Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.

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Related Experiment Video

Updated: Jun 4, 2026

The Portable Chemical Sterilizer (PCS), D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military
14:17

The Portable Chemical Sterilizer (PCS), D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military

Published on: June 29, 2014

Disinfectants: their values and uses.

George Castledine

    British Journal of Nursing (Mark Allen Publishing)
    |February 1, 2011
    PubMed
    Summary
    This summary is machine-generated.

    This historical article reviews early disinfectant practices, focusing on sulfur. It details objections to sulfur

    Related Experiment Videos

    Last Updated: Jun 4, 2026

    The Portable Chemical Sterilizer (PCS), D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military
    14:17

    The Portable Chemical Sterilizer (PCS), D-FENS, and D-FEND ALL: Novel Chlorine Dioxide Decontamination Technologies for the Military

    Published on: June 29, 2014

    Area of Science:

    • Historical medical practices
    • Infection control
    • Nursing history

    Background:

    • Nursing practices for infection control 100 years ago are examined.
    • The use of disinfectants, specifically sulfur, is highlighted.
    • Early 20th-century nursing challenges in maintaining hygiene are explored.

    Purpose of the Study:

    • To provide insight into historical nursing practices for infection control.
    • To discuss the properties and objections to using sulfur as a disinfectant.
    • To present a method for safe and effective sulfur fumigation.

    Main Methods:

    • Review of a historical article from the BJN (British Journal of Nursing).
    • Analysis of objections to sulfur fumigation (bleaching, fabric damage, metal tarnishing, poor penetration, fire risk).
    • Description of a suggested method to optimize sulfur use and minimize fire hazards.

    Main Results:

    • Sulfur was a popular, inexpensive disinfectant despite significant drawbacks.
    • Objections included damage to materials, limited efficacy, and safety concerns.
    • A method was proposed to improve sulfur's effectiveness and safety.

    Conclusions:

    • Sulfur was a widely used but problematic disinfectant in early nursing.
    • Understanding historical methods informs current infection control strategies.
    • Safe application methods were crucial for mitigating risks associated with sulfur fumigation.