Due respect...after reading extensively about pH meters and having a soil sample "tested" at a local garden shop I chickened out and had a soil lab test my soil. The pH came out 4.5 , way too acidic for grass. To fix it I have been applying lime this week with a (homeowner) Brinley spreader (35 ea -50 lb bags). I was ready to buy a pH meter , but the better ones seemed to cost $100 and required tricky calibration. There are lists of plants and their favorite pH on line. It is expensive to buy lime here. I found a place near Seattle selling it for $3.50 per bag, but I was afraid the freight would kill . The local feed store price is about $9/50 lb bag delivered. This is the pellet style for spreaders . I see pictures on line where large dump trucks spread the powdered stuff on farmland.