STS Preparation

[Trickster]

STS Mixing questions

weights of the chems to mix 1 liter final volume. That’s actually the smallest volume you can make using a mg scale. .05 g silver nitrate, mixed in 50 ml distilled water- part A. .39 g sodium thiosulfate pentahydrate mixed in 50 ml distilled water- part B (Note- If you use anhydrous thiosulfate, you will need to do your own math.) Whisk A and B together quickly for about 30 seconds. Add 900 ml of distilled water to reach the final 1L volume - I use 600ml here.

While whisking solution “B” in the glass measure, slowly squirt solution “A” into the glass measure in less than 30 seconds