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A 70 percent alcohol solution is effective as a preservative and disinfectant for specimens stored for a long time because it provides optimal penetration and denaturation of proteins, helping to prevent degradation. The water content in the solution aids in the absorption of alcohol into tissues, allowing for better fixation and preservation of cellular structures. Additionally, this concentration is effective in killing a wide range of microorganisms, which helps maintain the integrity of the specimen during prolonged storage.
70% of 50,000 is 35,000.
The 70th percentile is the score below which 70 percent of the cases fall. If your 70th percentile is 56, 70 percent of students scored below 56.
70% of a circle.
It looks like a 70% full pie graph. Cant really illustrate it here. see related link below
100% alcohol is more effective because of the more alcohol concentration in the drink.
First of all, because technological limits mean that we can only get alcohol at a purity of about 90%. 90% alcohol is also far more expensive than 70%, so it is more cost effective to use 70%. Ignoring all of that, the main reason is that 70% alcohol works just fine and sterilizes object very well.70%alcohol is the efficient concentration to denature the protein.
It is difficult and expensive to refine anything to 100% purity. Best to use 70% as it is just as effective and cost a whole lot less.
70 percent alcohol, also known as isopropyl alcohol, is most effective for disinfection because it has a balance of water and alcohol content. This concentration allows the alcohol to penetrate the cell wall of microorganisms more effectively, denaturing their proteins and disrupting their cellular functions. Higher concentrations of alcohol may evaporate too quickly, while lower concentrations may not be as effective at killing bacteria and viruses.
70% alcohol has been found to be more effective in killing microbes.Higher and lower concentration may not be as effective.90% alcohol coagulate proteins in contact.suppose 90% alcohol is poured over one celled organism,the alcohol penetrate the cellwall of the organism.the coagulated protein would then prevent the alcohol further from the cell and no more coagulation then take place.now,if 70% alcohol is added into one celled organism.The diluted alcohol also coagulates the protein, but at a slower rate,so that it penetrates all the cell before coagulation.Then all the cell coagulated and the organism died.
2/3 of 70% and 1/3 of 10%
100% alcohol is very volatile its get evaprated very quickly therefore we use 70% alcohol which gets less volatile and it sterilize the surface cotamination of the wiped object by dehydration. vj sharma
70% alcohol solution is more effective for sterilization compared to higher concentrations like 100% alcohol because it has a lower evaporation rate, allowing it to stay in contact with the bacteria or viruses longer to kill them. A 70% alcohol solution also penetrates the bacterial cell membrane more effectively, denaturing proteins and disrupting cell function. Additionally, 70% alcohol is less likely to damage surfaces or instruments being sterilized.
70 percent rubbing alcohol, also known as isopropyl alcohol, is a solution containing 70% isopropyl alcohol and 30% water. This concentration is effective for disinfecting surfaces and is commonly used in medical settings and households for sanitizing. The presence of water in the solution helps slow the evaporation of alcohol, allowing for a longer contact time on surfaces for effective germ killing. It's important to use it safely, avoiding ingestion and contact with sensitive areas.
A 70% alcohol solution is effective as a disinfectant because it has the optimal concentration to penetrate bacterial cells and denature proteins, effectively killing them. Higher concentrations of alcohol can evaporate too quickly and be less effective at killing bacteria, while lower concentrations may not be as potent.
Because the concentration of alcohol is lower; you pay the alcohol not the water.
Yes, 70 isopropyl alcohol is effective at killing germs.