GH pH 4.01 Calibration Solution 8 oz

Calibration solutions for General Hydroponics® meters General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many of the most popular brands of pH, EC, and TDS meters (NaCl scale or 442 scale). General Hydroponics® technicians review each batch to ensure that our solutions are accurately calibrated and deliver reliable readings every time they are used.

Data Sheet

• Packaging: 8 oz. bottle
• Reference buffer solution with pH value 4.01.
• Used to calibrate pH, EC, and TDS meters from most popular brands (NaCl scale or 442 scale).
• Each batch is reviewed by General Hydroponics technicians before leaving.
• Combines with pH 7.0 solution for two-point calibration.
• Manufacturer code: GH1541.

How to Use

• Rinse the electrode with clean water and dry it gently before calibrating.
• Pour a portion of the solution into a clean beaker; never insert the meter into the bottle.
• Immerse the electrode, wait for the reading to stabilize, and adjust the meter to 4.01.
• Discard the used solution; do not return it to the original container.
• Calibrate regularly, especially before important measurements or after changing the battery.
• Keep the bottle tightly closed, away from sun and heat.