The 9 way water test strips from Healthy Wiser are as described on the product description page https://www.amazon.com/gp/product/B01L74BHTA. I usually just check Chlorine and PH levels in my hot tub. I also distill my drinking and cooking water to remove any chemicals and impurities. Just dip arm length into the hot tub or dip in where you wanting to test and wait 30 seconds to compare colors with the chart. New at this? No problem, just follow the instructions. Note the coloring of the strips are different than what I am use to. I’m use to yellow for chlorine and red for PH. The dark plastic bottle hold 100 of these testing strips. Store at room temp with the lid on tight.