--- title: Culture Media for Biological Indicators | Mesa Labs description: Mesa Labs has culture media products for your biological indicator needs.  image: https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Apex%20Biological%20Indicators/apex-biological-indicators-main.jpg.png --- # Culture Media for Biological Indicators 1. [Home](https://lynton-sb3-mesalabs-20969579.hs-sites.com) 2. caret-right icon [Our Solutions](https://lynton-sb3-mesalabs-20969579.hs-sites.com/solutions) 3. caret-right icon 4. caret-right icon [Products](https://lynton-sb3-mesalabs-20969579.hs-sites.com/products/) 5. caret-right icon Culture Media for Biological Indicators ![culture-media-for-biological-indicators-main.jpg](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hs-fs/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Culture%20Media/culture-media-for-biological-indicators-main.jpg.png?width=600&height=600&name=culture-media-for-biological-indicators-main.jpg.png) ![culture-media-for-biological-indicators-main.jpg](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hs-fs/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Culture%20Media/culture-media-for-biological-indicators-main.jpg.png?width=45&height=45&name=culture-media-for-biological-indicators-main.jpg.png) ## Tryptic Soy Broth with Bromocresol Purple TSB-BP16 - Mesa’s TSB with Bromocresol purple pH indicator is specially formulated for use with our Spore Strip biological indicators - A reduced incubation time of 24 hours at 60 °C +/- 2 °C has been validated for steam sterilization when the Mesa Bacterial Spore Strip (either the single species *G.* *stearothermophilus* spore strip or the dual species spore strip) is used in conjunction with Mesa’s Modified Tryptic Soy Broth with Bromocresol Purple (TSB-BP16). - Prepared Media is packaged in 16mm x 100mm Type I borosilicate glass tubes with polypropylene screwcaps (white rubber liners). [ GET A QUOTE ](http://lynton-sb3-mesalabs-20969579.hs-sites.com/sterilization-cleaning-monitoring/quote-request?sdc_product_list=Other) [ Contact Mesa ](https://google.com) ![culture-media-for-biological-indicators-supporting-01.jpg](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Culture%20Media/culture-media-for-biological-indicators-supporting-01.jpg.png "culture-media-for-biological-indicators-supporting-01.jpg") #### Releasat® Releasat media is specially formulated soybean casein digest culture medium containing a pH color indicator which turns a dramatic yellow when spores grow. - Releasat medium is used to culture the MesaStrip or Apex discs in place of “generic” soybean casein digest medium. - Releasat Red media is specially formulated for rapid outgrowth of* B. atrophaeus* spores that may have survived the Ethylene Oxide or Dry Heat process. - Releasat Purple media is specially formulated for rapid outgrowth of *G. stearothermophilus* spores that may have survived steam and hydrogen peroxide sterilization/decontamination processes. - Prepared Media is packaged in 16mm x 100mm Type I borosilicate glass tubes with polypropylene screwcaps (white rubber liners). - [Releasat culture kits](http://lynton-sb3-mesalabs-20969579.hs-sites.com/products/sterilization-cleaning-monitoring/releasat-bi-culturing-set) are available for monitoring ethylene oxide, dry heat and chlorine dioxide sterilization processes.  ![apex-Ribbons-Small-R01](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Apex%20Biological%20Indicators/apex-Ribbons-Small-R01.png "apex-Ribbons-Small-R01") #### Population Assay Materials Our Population Assay Materials contain everything required to perform accurate population assays of Mesa Labs’ biological indicator products.  - PAK-M* (with Difco media): Growth medium only (240ml) - PAK-G*: Glassware and pipettes only * *Use both product codes for complete population assay materials* Document Downloads ### Document Downloads - [Product Brochure – Culture Media](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/TSB-BP16%20Culture%20Media%20For%20Spore%20Strips%20Brochure.pdf) - [Product Specifications – Releasat Purple Media](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/SP-131%20Product%20Specification%20-%20Releasat%20Purple%20Media.pdf) - [Product Specifications – Releasat Red Media](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/SP-132%20Product%20Specification%20-%20Releasat%20Red%20Media.pdf) - [Product Specifications – Tryptic Soy Broth with Bromocresol Purple](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/SP-133%20Product%20Specification%20-%20Tryptic%20Soy%20Broth%20with%20Bromocresol%20Purple.pdf) - [Product Specifications – Population Assay Materials](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/SP-130%20Product%20Specification%20-%20Population%20Assay%20Materials.pdf) - [Safety Data Sheet – TS-224 – Prepared Tryptic Soy Agar Growth Medium (TSA)](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/TS-224%20v1%20Safety%20Data%20Sheet%20--%20PAK-M.pdf) - [Safety Data Sheet – TS-202 – Prepared Culture Media (TSB)](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/TS-202%20v2%20Safety%20Data%20Sheet--Prepared%20Culture%20Medi.pdf) - [Safety Data Sheet - Releasat Media](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/sporemind/public/TS-215%20v2%20Safety%20Data%20Sheet--Releasat%20Media.pdf) ### Related products #### [![Releasat® Biological Indicator Culturing Set](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hs-fs/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Products/Releasat%20Biological%20Indicator%20Culturing%20Set/releasat-biological-indicator-culturing-set-main.jpg.png?width=300&height=300&name=releasat-biological-indicator-culturing-set-main.jpg.png) Releasat® Biological Indicator Culturing Set Releasat® kits are convenient for monitoring ethylene oxide and dry heat sterilization processes and provide visual results with 72 hours.](http://lynton-sb3-mesalabs-20969579.hs-sites.com/products/sterilization-cleaning-monitoring/releasat-bi-culturing-set) ### Related services [![Contract studies laboratory](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/mesalabs%20website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Services/Contract%20Studies/contractStudies.jpg) #### Contract studies laboratory Mesa’s independent contract studies laboratory performs certified and compliant third-party chemical and biological indicator testing and verification. Learn more ](http://lynton-sb3-mesalabs-20969579.hs-sites.com/services/contract-studies) [![Sterilization cycle development](https://lynton-sb3-mesalabs-20969579.hs-sites.com/hubfs/website/solutions/solutions/sterilization%20and%20cleaning%20monitoring/Services/Sterilization%20Cycle%20Development%20and%20Validation/sterilizationCycleDevelopmentConsultation.jpg) #### Sterilization cycle development Get expert help for your bioburden. Mesa Labs assists with sterilization cycle development, BI qualification and validation, and routine monitoring support. Learn more ](http://lynton-sb3-mesalabs-20969579.hs-sites.com/services/sterilization-cycle-development-validation)