While mixing saltwater for my aquarium, I added the standard 2 1/2 cups of salt to a 5gal bucket of water. Instead of the 35 PPT (sg = 1.023) that I expected, I found that I had about 68 PPT. Almost double the desired salt content - a fatal concentration.
What happened? We know we must always calibrate instruments like refractometers - but have you ever heard of calibrating a measuring cup from your kitchen?
No wonder some of my recipes have been screwy lately. This is insane.
Damn. The compression destroyed the markings on the white cups. You'll have to take my word for it - the large white cup on the left is 1 cup, and the small white cup is 1/2
neanderthalman1 3 years ago