Refill pack for Special indicator paper pH 7.2 to 9.7 (3 reels of 5m length and 7mm width)

• Singly sealed to ensure long-term stability and protection against many external influences

• Have to be placed in the plastic reel with color scale to be used

• Gradation (pH): less than 7.2 - 7.2 - 7.5 - 7.8 - 8.1 - 8.4 - 8.7 - 9.0 - 9.3 - 9.7 - greater than 9.7