14

The quick answer is: Yes, it can cause harm. Think about it...The septic system (both the tank and your "drain field") rely on bacteria, and antibacterial soap is not designed to kill only specific species of bacteria. In other words, antibacterial soap can kill a whole range of bacteria, and that certainly includes the bacteria needed in your septic system....


6

Virus cannot reproduce on their own; they can only reproduce by taking over a cellular organism. For this reason, the idea of a 'virus colony' does not make sense. You could have a colony of mold or bacteria that is infected by a virus, but a virus by itself could never create a single offspring, let along a macroscopic colony. If there were some type of ...


5

The World Health Organization states[*]: 1:100 dilution of 5% sodium hypochlorite is the usual recommendation. Use 1 part bleach to 99 parts cold tap water (1:100 dilution) for disinfection of surfaces. They say most household bleach solutions contain 5% sodium hypochlorite (50 000 ppm available chlorine), which does seem to be the typical concentration ...


5

I have also been frustrated by use of percentages in protocols when making dilutions of stock bleach. It's helpful to look at the product labels, as they often have dilution factors for different uses as well as concentrations in parts per million. I have a bottle of Clorox brand concentrated bleach sitting next to me, and the label says this solution is ...


2

Viruses move by Brownian motion 1 The definition of temperature is there are an average of about 2 calories (little c) (= 8.3 J) per kelvin, mole, and degree of freedom. 2 Multiply that by 1 mole/6.02E23 molecules and you have the Boltzmann constant (1.4E-23 J/(K*DOF). So the virus has three dimensions - three degrees of freedom - of physical ...


2

Specific antibodies are typically detected using ELISA. The way you make a test for an antibody to a particular pathogen is not by using secondary antibodies to the specific part of the target antibody, but by using the antigen. Different kits work differently, but the general idea is that you have antigen stuck to a surface, you put the sample on that ...


1

Capnophiles (from the Greek kapnós, meaning smoke) are organisms that thrive in the presence of high concentrations of CO2. Some of these organisms have a metabolic requirement for CO2. Many organisms present in the cow rumen are capnophiles by necessity, as CO2 is the major gas product of rumen fermentation (66% by molarity). One such organism is ...


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