Most county extension offices offer free
soil testing kits.
You can also find budget friendly
soil testing kits at home improvement stores.
Generally speaking, home
soil testing kits are designed for eastern soils and are not accurate for western soils.
Unfortunately these units can't ve used to check the pH on hot sauce — unfortunately, way more expensive is required for testing liquids.Testing Soil NutrientsBesides pH meters,
soil test kits with color indicators are another method of checking the acidity.
Rapitest also offers such
a soil test kit, available here, for example.
Luster Leaf 1663 Professional
Soil Test Kit with 80 Tests: Patio, Lawn & Garden.
If you are concerned about using it around acid - loving plants then consider buying an inexpensive pH
soil testing kit and testing your compost before use.
Not exact matches
Test soil (you can buy a
testing kit at most garden retailers) to see if it needs help.