Chlor Phenol Red (CPR) 8 in x 10 in Test Paper Sheets [Pack of 24]

Description

Chlorophenol red water leak detection paper dramatically indicates the presence of water with a bright red color. The water indicator paper sheets shown in the image are 8×10″ (200x250mm). The native color of the sheets is yellow & the wetted sections turn red to a deep purple (depending on the liquid’s pH) when exposed to liquid water. They are insensitive even to high humidity levels unlike the cobalt chloride papers.

Chlorophenol Red (CPR) test paper is useful in differentiating between a solution with an acidic pH and one with a more neutral pH. The unreacted paper is yellow/orange in color. At neutral pH (about 6.7) the paper will turn a reddish color. At higher pH values, the paper will turn more violet. Given that the paper starts out yellow/orange and turns red at roughly the pH of water, it is useful in finding water leaks.

Bartovation Chlorophenol Red test paper provides a fast, visual method to evaluate rinse effectiveness in high–aspect ratio silicon components used in chip etch equipment by detecting residual caustic chemistry expelled holes. By blowing rinse effluent onto Chlorophenol Red paper, manufacturers can quickly distinguish between poor and effective rinsing performance, enabling optimization of rinse processes.

Instructions for use:

1. Remove one Chlorophenol red test paper sheet from the packaging, being careful not to touch the sheet anywhere other than where you grasp it.
2. Dip the sheet into the solution to be tested for 1-2 seconds and remove. Alternatively, place the test sheet near a seal where you suspect there might be a leak. Note: Do not dip the sheet directly into a solution that may later be consumed. Always test a sample of the solution and discard it when finished.
3. The test paper will turn red/violet in seconds if dipped into a solution that is neutral (pH ~ 7) or basic (pH >7).

NOTE: The solution must be water-based or no reaction will occur.