Various types of indicator papers cover a wide pH range to allow for good accuracy of determining pH value of a solution. These Narrow Range Test Papers offer high sensitivity and sharp color change. Narrow pH unit graduation: 0.2-0.4 (Congo Red: color change to red indicates within specified range…

Detects concentration of specified ion in solution. Two-point indicator strip confirms within pH range and ion concentration by color comparison. Dip the indicator test strip in solution and compare to the color chart on the container. Please Note: ALL Advantec items have a maximum 48…