David Kuchta, Ph.D. has 10 years of experience in gardening and has read widely in environmental history and the energy transition. An environmental activist since the 1970s, he is also a historian, ...

Soil pH is a measure of soil acidity or alkalinity. On the pH scale, a value of 7.0 is neutral, pH values less than 7.0 are acidic, and pH values greater than 7.0 are alkaline. Homeowners and ...

The pH scale is used to measure the acidity of a fluid. The pH scale ranges from 0 to 14. A pH of 7 is neutral, whereas a pH result below 7 is acidic and above 7 is alkaline. Urine has the widest ...

IPI tests paper-based materials and adhesives for pH levels using a modification (described in ISO 18902) of the standardized test, TAPPI T 509 Hydrogen Ion Concentration (pH) of Paper Extracts (Cold ...

The pH scale that is widely accepted and used by scientists didn't actually exist until 1909. Before then scientists had to rely on using adjectives to describe the acidity or basicity of a substance ...

Purdue Extension Educators frequently encourage homeowners to get soil tests when they want to grow new plants in an area, or try to diagnose what’s wrong with plants currently growing. One key ...

Applying lime when lime is not needed may have disastrous results in your garden, landscape and lawn. Determining soil pH is important in gardening. The pH scale ranges from 0 to 14, with 7 being ...

A urine pH test checks the acidity or alkalinity of your urine. High or low levels can indicate various medical problems. Depending on the results, you can make lifestyle changes and get the proper ...