Ống phát hiện Ion Niken Ni trong dung dịch Gastec 291 (5 ~ 50 mg/L)

This Gastec 291 tube detects nickel ions in solutions, ranging from 5 to 50 mg/L. It measures 1.3 to 200 ppm and takes 1 to 8 hours to sample.

• The description claims the system converts color from red purple to light brown.