I have clear choice labs green/pink indicator and a cheap blue/clear indictator.
The green indicator goes pink with 8 drops (80ppm) and the blue indicator goes clear after 10 drops (100pom). Same water, same titration agent.
any ideas why they give a different answer? Do they work differently? What exactly do they measure?
The green indicator goes pink with 8 drops (80ppm) and the blue indicator goes clear after 10 drops (100pom). Same water, same titration agent.
any ideas why they give a different answer? Do they work differently? What exactly do they measure?