Replying to @DenimGlasses A lot of you are familiar with my laundry detergent reviews but were curious as to how I gathered my performance data. I hope this video explanation answers your questions. Here is my process: 1) I buy white cotton in bulk and create 1'x'1' cotton swatches 2) The swatches are stained with 18 unique stains which represent the 5 stain categories 3) The stained swatches air dried and the color is measured before testing 4) The stained swatches pinned to a microfiber cloth so they dont bunch 5) The staineed swatches are cleaned by being loaded the same machine, with the same laundry ballast, and I use the normal cycle every time and do three tests using different water temperatures cold, warm and hot water giving me 54 data points 6) I also add some oil to the ballast to recreate body oil which is the most common stain (this is super important) 7) The cleaned swatches are air dried and then measured again 8) The data is captured and the results are gathered with my excel sheet which tells me how much of the stain is removed Because some color deltas are very different, the PERCENTAGE of the stain removed is used to level out the numbers. For example, clay only has a max delta of 14, but green paint is in the 50s. This would give green paint a much heavier 'weight' or level of importance than other 'lighter' stains. Creating this process and being confident with the results was very challenging for me. Here are three examples of issues that arose during testing: 1) The stained swatches need to be dried on a drying rack and not a towel, otherwise the oil based stains transfer to the towel which can create incorrect data. 2) Dirt and charcoal need to be applied with my 'clapper' device to ensure it's applied evenly to the fabric. 3) The kale must remain frozen as it's much harder to remove and easier to apply evenly (it kind of turns into a crayon). This means I have to do the kale application first or it'll thaw. While I did stumble into this procedure, I have altered it to ensure it aligns with the A.I.S.E. standards. One of the most important things I learned from the procedure is ensuring that body oil or sebum is included. Water softening and oil removal are the two main focuses of every big laundry detergent producer. Body odor comes from malodor bacteria that eat sebum. If you do not include it in your test, it is basically useless. Think of it this way, are you really getting that much makeup and blood stains on your clothes? No, but you are sweating every day. This is the abridged version, I'll be posting a long version of my process on YouTube in the next few weeks :)
#laundry #laundrydetergent #productreview #laundrydetergentreview #science #howitstested #explained #STEM #experiment #dataisbeautiful #data #cleaning #clean #laundrytips #consumerinfo #laundryhacks