Bottle of pH test drops:
http://www.amazon.com/General-Hydroponics-Test-Kit-1-Ounce/dp/B000BT32UA/?tag=greenrel-20
Bottle of pH test drops:
http://www.amazon.com/General-Hydroponics-Test-Kit-1-Ounce/dp/B000BT32UA/?tag=greenrel-20
This stuff is the best! If it came down to this or an El Cheapo pH meter I’ll take this every time!
Help me understand why this one versus your “El Cheapo meter”?
Liquid regent (drops) are standardized
Cheap PH meters …not so much