I'm new to testing and want to make sure I'm not doing something wrong. When I test for CH the test turns pink, not red. When I test for TA it also is pink, not red. I'm assuming I reach the endpoint when the next drop I add does nothing to deepen the color. Is this pink correct or maybe I have old reagents (I purchased the test kit a few months ago). My test kit says "when the color turns red"... not pink, so I'm confused. Thanks.