pH Meter Image source : Google Images A Technical handbook on pH its Fundamentals, Working, Maintenance and Applications on detail.The handbook can be obtained from the below link. WHAT IS pH, AND HOW IS IT MEASURED? A Technical Handbook for Industry By Frederick J. Kohlmann http://www.hach.com/asset-get.download-en.jsa?code=61809 Got something to say about this post? Leave a comment...your comments are valuable for improving the posts.