Features & Benefits
- Includes two 1 Quart (950 mL) bottles for pH 4.00 and pH 7.00.
- Designed for precise and accurate calibrations.
- Compatible with all pH meters.
- Comes with waterproof labels for convenience.
- Free 'How to Use' sheet included for easy guidance.
- Ideal for hydroponics, aquariums, aquaponics, and pools.