pH 4.0 Calibration Solution Packet

• pH 4.0 Calibration Solution for pH Monitors, Controllers and Tester
• 1- 20ml Packet

This solution is pH 4.01 and allows accurate calibaration of pH Monitors, Controllers and Testers. Use to calibrate slope setting when measuring low pH values. Packaged in a convenient 20ml packet for easy and quick use. These instruments should be calibrated every 6-8 weeks to maintain accuracy.