Chemtrol 250 ORP/pH Digital Controller state_Rhode Island Our engraved signs are 1/4

Our engraved signs are 1/4 inch thick and made of high-density polyethylene

Every detail of the Pool Blaster Max has been carefully thought out to maximize efficiency and convenience

This Washington Notice Lifeguard and Attendant Statement (17 Years And Under) aluminum sign measures 12 x 10 inches

Use with garden hose or 1-1/4 inch or 1-1/2 inch vacuum hose

pH and ORP

Chemtrol 250 ORP/pH Digital Controller state_Rhode Island Our engraved signs are 1/4The Chemtrol 250 ORP pH Digital Controller is a microprocessor based digital controller designed to maintain both sanitizer ORP (oxidation reduction potential or Redox) and water pH. The Chemtrol 250 features adjustable set points, adjustable alarms,out of range alarms, and other features not normally found on these types of controllers. This controller is designed for affordability, simplicity of installation, ease of use, and long term reliability.