ANNJET phthalaldehyde concentration indicator card
Only for testing Ansett phthalaldehyde disinfectant
Completely immerse the indicator color block in the phthalaldehyde solution, take it out after 3 ″, and place it horizontally for about 3min-5min, and read the indicator color block reaction result (when the indicator color block reaches or is deeper than the label's qualified contrast color, prove that o-benzene The concentration of diformaldehyde is more than 0.3%, the solution is effective; when the color block is yellowish or uneven yellow, it means that the solution concentration is less than 0.3%, and the solution is not available)
Specifications: 50 bars / bottle
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