no,
There is a test kit you can buy at a refrigeration distributor that allows you to capture a refrigerant sample. With this kit you can tell acid levels and moisture content. You need to know what you're doing to get a clean, non contaminated sample.
All pickles need refrigeration, once the jar has been opened.
To use an ancestry spit kit to trace your family's lineage, you first need to purchase a kit online or in a store. Then, follow the instructions to collect a saliva sample by spitting into a tube. Mail the sample back to the company for analysis. Once the results are ready, you can access them online to learn about your genetic ancestry and connect with potential relatives.
Yes it does need regrigeration.
Because all of the saliva that the player is producing has to go somewhere and the spit key releases the spit
Once it's open, any mayo needs refrigeration.
It slows their spoilage.
Refrigeration
No
No
Refrigeration is not applicable to preserve sample for enzymatic assay because enzymes may lose their activity at extremely low temperatures as well. This may account for storing enzymes at 5° C or below without affecting the enzymatic activity permanently. (Anubhav, 2012)
In my experience, a tuna fish sandwich can survive for some hours without refrigeration - you can take one to school with you in your lunchbox - but for any longer period of time, yes, it would need refrigeration.