After checking on it a week later, a ton of ⦠Start studying Microbiology Lab: Effectiveness of Hand Washing. The materials for this laboratory experiment include: 4 nutrient agar plates; liquid antibacterial soap; 8 sterile cotton swabs, 1 test tube of sterile saline; Bunsen burner, glass marking pencil; stopwatch. How does the presence of residential flora influence the infectious process? Print. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Rinse and dry thoroughly. Why do you think hand washing is necessary when medical and surgical personnel wear gloves during surgery or when examining patients? Enjoy! Correct hand-washing is the single most effective technique that prevents the transmission of micro-organisms either directly or indirectly to others. 1 Hand washing is a simple, convenient, effective, and cost-effective means to limit the transmission of communicable diseases from one person to another. Date: SEP.17.2020 // ⦠They learn to create a ⦠Resident flora are the normal flora of the skin. The number of colonies were counted by visual inspection of the plates. The percent of microorganism growth was calculated as: percent reduction = [colonies (section 1) â colonies (section x)] â colonies (section 1), where x = plate sections 2, 3, 4 for each hand. Table 1.2 show the results of the calculations. The percent reduction for the right hand shows a linear rate. The percent reduction for the left hand shows initially an increase and then a linear rate of decline. Student 2 proceeds to wash for one minute the thumb of the right hand under a stream of warm running water using a scrubbing motion between the thumb and the right index finger. Student 1 then proceeds to rub a sterile cotton swab on the pad of the thumb of Student 2 and then inoculates the R2 section of the âWaterâ plate using a zigzag motion. Tenth Edition. sections: following Purpose you the experiment. Hand Washing Video by CDC Take two sterile ⦠            Table 1.2 Percent microorganism growth reduction. Your hands should be wet throughout the washing. Student 1 uses aseptic technique to soak a sterile cotton swab in sterile saline solution in a test tube. The aseptic technique consists of removing the cap of the test tube, flaming the neck of the test tube using the Bunsen burner, dipping the cotton swab in saline, and putting the cap back on the test tube. Student 1 then proceeds to rub the moistened cotton swab on the pad of the right hand thumb of Student 2 and then inoculates the R1 section of the âWaterâ plate using a zigzag pattern from the edge of the dish towards the dividing middle line. Click to see ⦠The typical personâs hands contain millions of microbes. The 10 most common ways of spreading diseases are the 10 fingers. In addition to hand bacteria, hands were inoculated with table surface bacteria. Below are the introduction, body and conclusion parts of this essay. good laboratory practices and technique, (2) safety equipment, and (3) facility design. Lesson Type: Experiment and Extension LessonâStudents collect, manipulate, and/or summarize data from ⦠The procedure consists of the following steps. Using the glass marking pencil, Student 1 marks the bottom of two agar plates with the label âWaterâ and the other two plates with the label âSoapâ. The Student 1 then marks the bottom of each âWaterâ and âSoapâ plate with a dividing middle line. Each half of a âWaterâ plate is labeled R1 and R2 respectively. Each half of the other âWaterâ plate is labeled R3 and R4 respectively. Each half of a âSoapâ plate is labeled L1 and L2 respectively. Each half of the other âSoapâ plate is labeled L3 and L4 respectively. Hand Wash Lab Introduction: You are aware that you have been taught to wash your hands often, especially before eating and after; well, you know. Follow Published on Oct 20 ... follow the above rules will be sent out of the class. Washing hands without soap is much less effective. Owensboro Community and Technical College, University of Illinois, Urbana Champaign • MCB 251, Owensboro Community and Technical College • BIO 225, University of North Georgia, Gainesville • BIO 2500. 3. This preview shows page 1 - 2 out of 4 pages. Vigorous hand washing⦠Examine the results of the handwashing experiment and understand the various interpretations. Wet your hands with clean, running water (warm or cold) and apply soap. The results ⦠Dry your hands using a clean towel or air dry them; Note: Use soap or alcohol-based hand sanitizer to get rid of ⦠Figure 1.2 Agar plates inoculated with microorganisms from the left hand thumb. Wash your hands with disinfectant soap when you arrive at the lab and again before you leave. Lather your hands both front and back including the fingers and nails, by rubbing them together with the soap. apply soap and lather/scrub every nook and cranny of your hands for 20-30 seconds (about the time to sing "Happy Birthday" twice). Hand Washing: Weak Link in Preventing Microbial Contamination in Labs. Rinse your hands well under clean, running water. Boston: Pearson, 2014. Microbiology Hand Washing Lab Report In Uncategorized, Laboratory State . Apply one dose of liquid soap and lather (wash) well for 15â20 seconds (or longer if the dirt is ingrained). The exercise compares the effectiveness of two hand washing techniques: using water only, and using soap and water. A lab report is known as the elaborate explanation of a particular selected challenge that aims to confirm or disprove an obvious clinical option. Donât forget the backs of your hands, your wrists, between your fingers ⦠There are 2 categories of microorganisms, or flora, normally found on the hands. There are 2 categories of microorganisms, or flora, normally found on the hands. To clean our hands, the Centers for Disease Control and Prevention recommends that we: wet hands with clean water. 10 July 2013. Needed for Each Lab To participate in the lab, you must have the following items: 1. . Cdc.gov. is an effective measure in combatting pathogenic bacteria. . According to research literature, hand washing with water only is ineffective. Using soap for extended periods of time is a better alternative to using only water. However, this allows some transient flora to cling deeply to hair and to remain protected by oil and dead skin cells. Soap with surgical scrubbing is a good way to remove transient flora and some residential flora. Required fields are marked *. Your email address will not be published. Purpose: In this lab, you are going to assess the value of that hand-washing advice and the methods that bring the most benefit from hand washing. Start studying Hand washing - Microbiology. Most are naturally occurring and are harmless, but some may be disease-causing germs. . Food can additionally become contaminated through inadequate sanitation, cross-contamination and the improper application ⦠Lather your hands both front and back including the fingers and nails, by rubbing them together with the soap. Your lab coat (will be provided to you by Valencia)-must be ⦠Generally, it is better to use liquid soap than bar soap, particularly at work. may enter the laboratory or perform any function in the laboratory. 4. These included an active dry yeast packet, distilled water, sugar, hand soap, nutrient agar, wooden stir stick, hot pad, scissors, petri dishes, cotton swabs, sterile gloves, 250 beaker, transfer pipettes, parafilm, ⦠It is routine practice to wash the hands prior to and after examining a ⦠Microbiology Lab Practices and Safety Rules 1. . 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