PREPARATION AND CONTRAST OF INDICATOR PAPER TO VIOLET METHYL.
Edition 1954-04-15

STANDARD TEST METHOD FOR NEUTRALIZATION NUMBER BY COLOR, INDICATOR TIRATION
Edition 1983-07-15

AMBIENT AIR. DETERMINATION OF A GASEOUS ACID AIR POLLUTION INDEX. TITRIMETRIC METHOD WITH INDICATOR OR POTENTIOMETRIC END-POINT DETECTION.
Edition 1993-05-19

Indicator lamps
Edition 1992-05-31

Electronic digital-indicator gauge
Edition 2021-01-20

Oxygen deficiency indicator
Edition 2010-03-23

Rate of Climb Indicator, Pressure Actuated (Vertical Speed Indicator)
Edition 1958-07-01

Sterilization of health care products - Chemical indicators - Part 3: Class 2 indicator systems for use in the Bowie and Dick-type steam penetration test (Adopted ISO 11140-3:2007, second edition, 2007-03-15, including technical corrigendum 1:2007)
Edition 2018-06-01

Indicator, humidity, plug, color change
Edition 1998-02-01

Indicator, Humidity, Plug, Color Change
Edition 1999-07-01