Goldenrod Color-Changing Paper

Making science great...

This user gave 5/5 stars

Days long ago I was a registered Radiologic Technologist. It was way before digital x-rays and all the x-rays were hand developed. I worked with a doctor who loved to play tricks. One day, when I opened the darkroom door, I noticed the paper sleeve that was between the films was red “bleeding”. I figured out it was from the developing chemicals mixing with the goldenrod paper. Perfect opportunity to get back at the boss. I ran out of the room and told him I must be bleeding from somewhere, showed him the paper and tried really hard not to laugh as he was checking my hands and head for any wounds. Gotcha was an understatement!

Thanks for making science so great for so many kids and adults.

Doesn't work without liquid plumber

This user gave 1/5 stars

This paper does not create "bloody" anything unless you use ingredients that require safety goggles, thick gloves, and immediate handwashing. I tried to make the "bloody handprint" using windex and the color change was from goldenrod to a slightly darker yellow. No luck when trying a baking soda paste. Pure ammonia created a burgendy color that was not even close to blood-like. I finally got the "bloody" color when I used pure drain cleaner (liquid plumber). This made the paper useless for my halloween science "hands-on" experiment and had me scurrying around at the last minute to find an alternate. Either I got two bad batches that need to be replaced (too late) or the advertising of this paper should be changed to note that the color change is undramatic except when using dangerous household chemicals (pure ammonia and sodiume hydroxide). I am very dissapointed. A refund would be appreciated.

Goldenrod Paper Kit

This user gave 2/5 stars

I thought this would be good to have my kids make Valentine's Day cards for their mothers. I read all about it in your ad. It didn't say anywhere that the paper would change back to yellow when the ammonia evaporated. When the package arrived I checked it out well before I opened it. The directions do say that the red change is only temporary, but that information is hidden behind the other sticker on the package. I re-visited the web site and re-played the video clip. There it wqs. A whole second or 2 saying that the red would turn back to yellow when the ammonia dried. Oh, well. Live and learn.