Bluelab® pH 4.0 Calibration Solution 500ml propigation Made with heavy duty breathable

Made with heavy duty breathable fabric Coolaroo 90% UV shade fabric is built to stand up to tough outdoor conditions keeping you and your pets protected and comfortable all year long

8 for hydroponics and 6

our scientists were hard at work with a mission: to give growers a consistent and precise way to feed their plants through every growth phase

Genuine leather accents

They will now be rated at AHAM standards based on the recent US Department of Energy ruling

Bluelab® pH 4.0 Calibration Solution 500ml propigation Made with heavy duty breathablepH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH7. 0 first (buffer) then to pH4. 0 (slope). Bluelab's EC CF equipment does not need calibrating as they are all factory calibrated. The CF27. 7 (EC2. 77) solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe.