Methanol based color-coded surrogates.
These surrogates will color base-neutral solutions yellow and acid solutions red.

Concentration:
Base Neutral- 100µg/mL
Acid- 200µg/mL

Base Neutral Surrogates:
p-terphenyl-d14
2-fluorobiphenyl
nitrobenzene-d5

Acid Surrogates:
phenol-d
2-fluorophenol
2, 4, 6-tribromophenol

Supplied in 25mL volume screw-top vials.
Store in refrigerator.
Special shipping requirements may apply.

1-year expiration from manufacture.