True Indicating Steam Chemical Indicator

ISO 11140-4 Type 2 (BD-1x)

Bowie and Dick Test Packs and Test Sheets detect the presence of residual air in prevacuum steam sterilizers-autoclaves operating at 121° – 134°C. The internal Indicator sheet will demonstrate a uniform color change from Blue to Pink for Product Code BD-1X or Blue to Dark for Product Code A4TS when proper conditions for sub-atmospheric pulsing have been met. A Test Sheet yielding inconsistent color transition is indicative of one or more of the following being insufficient: exposure temperature, exposure time, vacuum depth, number of vacuum pulses, steam penetration, or air removal.

A Bowie Dick test should be performed at least once daily on the bottom shelf, over the drain closest to the door in an otherwise empty chamber. Product Code BD-1X is designed to be placed directly into the sterilizer-autoclave as the Test Sheet is containedwithin the Test Pack. Product Code A4TS is designed to be placed into a towel pack in accordance with ISO 11140-3.

Per ISO 11140-3 and 11140-4, exposures shall be performed at 121°C for 15 minutes or 134°C for 3.5 minutes. Please consult with Customer Service regarding evaluation at times or temperatures outside those recommended.

Emulating Indicators, ISO 11140-1 Type 6

Type 6 Indicators are designed to react to all critical process variables including time, temperature and moisture. True Indicating’s Product Code CSBN-16 indicates exposure to a steam process at the Stated Value (SV) of 121°C for 10 minutes or 134°C for 3.5 minutes. The Indicator will transition from Blue to Dark; the transition color may vary depending on the load configuration, length and conditions of exposure. A color transition from Blue to Dark and the word “NOT” being completely concealed provides indication of effective steam sterilization conditions.

The backing of the strip is removable which exposes latex-free adhesive for easy application of the Indicator to packages during exposure or for record keeping purposes after exposure.

ISO 11140-1 TYPE 1

True Indicating Steam Chemical Process Indicator labels are manufactured with:

• Water-based Indicating Ink which contains no lead or other toxic heavy metals

• Latex-free pressure sensitive adhesive

The Indicators are designed to provide confirmation of exposure to a steam process through color transition from Blue to Pink for the CSBP-1 or Pink to Dark for the CSPN-1. The Indicators may be used to monitor steam processes at 121°C to 137°C. The color transition is designed to occur in compliance with ISO 11140-1 and display an irreversible color transition which is distinct allowing for processed from unprocessed items to be easily distinguished. 

In addition to the standard configurations, True Indicating will manufacture custom Indicators and labels to meet your needs.

5,000 Dots/Roll, Indicator Dimension: 12.7 mm

Steam Type 5 integrating indicator

Indicator can be used as a Strip, Label or both for record keeping post-exposureDistinct Color Transition from Pink to Dark resulting in the word "NOT" disappearing

Lead-free and manufactured with no heavy metals or latex

3 Year Shelf Life​

121°C/16.5 minutes

19 mm x 64 mm

Autoclave Indicator Tape: The tape is used for closing packages, instrument wraps and other items requiring steam sterilization. The autoclave tape can be utilized for identifying processed from unprocessed items. The can adhere to paper, plastic, glass, metal and non-woven materials.

Lead and Latex Free Crepe Tape For Steam (1-Roll)

Transitions from Light to Dark when exposed to Steam Processes

Sticks to a variety of surfaces with minimal adhesive residue

Light to Dark

1 ROLL

121°C/10 minutes

19 mm x 50 mm

Multicritical Process Variable Indicator, ISO 11140-1 Type 4

Type 4 Indicators are designed to react to two or more of the critical process variables. For steam, the critical process variables are time, temperature and moisture. True Indicating’s Product Code CSYN-14, indicates exposure to a steam process at the Stated Value (SV) of 121°C for 15 minutes or 134°C for 3.5 minutes. The Indicator will transition from Yellow to Dark; the transition color may vary depending on the load configuration, length and conditions of exposure. A color transition from Yellow to Dark and the word “NOT” being completely concealed provides indication of exposure to a steam process where two or more of the critical process variables were met for sterilization.

The backing of the strip is removable which exposes latex-free adhesive for easy application of the Indicator to packages during exposure or for record keeping purposes after exposure.