The 7-3000-16 is a pH Test Paper Red Litmus, 100 strips per vial.
| Item# | Description |
| 7-3000-16 | pH Test Paper, Red Litmus, pH 6.8-8.1, Base or Alk. |
| 7-3000-17 | pH Test Paper, Blue Litmus, pH 4.3-6.8, Acid |
