Reference
Method
Test
Reagent #
Reagent Name
TAPPI
Analysis of sodium silicate
N/A
3.5
Methyl purple indicator
ASTM
Lamp Method
Sulfur in Petroleum Products
6.7
Methyl Purple Indicator
ASTM
Modified Kjeldahl Method
Total Nitrogen in Lubricating Oils and Fuel Oils
6.5
Methyl Purple Indicator Solution
ASTM
Electrometric or Color-Change Titration
Acidity or Alkalinity
20.4
Methyl Purple Indicator Solution (1 g/L)
ASTM
Manual Digestion / Distillation
Total Kjeldahl Nitrogen
11.6
Methyl Purple Indicator Solution (1 g/L)