20% Off Professional pH Meter at http://www.amazon.com/Professional-Lifetime-Guarantee-Accurate-Reliable/dp/B017HM4Z5Y Use coupon code "DAM20OFF" Expires on 01/31/2016.

Professional pH Meter with Large LCD Screen. Range 0.00 to 14.0 pH. Lifetime Guarantee on this Accurate and Reliable pH Test Meter.