I'm planning to use these for a science class, but can't find safety info for parents. Can you help? How much of each chemical is on each strip?

The Center for Precollegiate Education and Training at the University of Florida has a lesson plan and information on the chemicals. Search this sentence: "Ingesting too much PTC at once can cause thyroid damage, which is why it's important to limit the students' access to the taste strips."

Are the papers for each tube colored differently or are they all white?

They are all white. Those colored papers are just inserts with the name of the chemical

Hi, I see that the first two vials have 100 strips, but how many are in theVial of Thiourea Test Strips and Vial of Control (No Chemical) Test Strips?

zoom in on second picture...all four have 100 strips

I've been looking for food grade sodium benzoate that is listed in the ingredients of things like nusugar, is this sodium benzoate it?

This is a litmus kits that can give you a hint of whether you are a super taster or not. I know the sodium benzoate strip tells the sodium content

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