Category Archives: Preservatives

Personal Care Test Methods

Commonly requested test methods for personal are and cosmetic products include: Preservation ASTM E640 – Preservatives in Water-Containing Cosmetics ASTM E645 – Evaluation of Preservatives in Cooling Water (Industrial Water Testing) Shelf Life Accelerated Aging – Heat Accelerated Aging – Spray/Wipe Accelerated Aging – UV Exposure Accelerated Aging – Water Mist Biodegradation OECD 301B for […]

Personal Care Quality Control Testing

Bacterial contamination has once again resulted in a large scale product recall, this time with baby wipe; and this is an entirely avoidable problem.   Apparently after opening a package of baby wipes, customers discovered the wipes were discolored and had an unpleasant order.  Further microbial testing indicated that the contaminant was (in part) Burkholderia cepacia.  A common bacteria, B. cepacia may cause […]

MIT Preservative in Personal Care Products

A recent article, “A mystery rash on a woman’s hands and lips stumped specialists” in the Washington Post has intrigued us with the discussion of an antimicrobial preservative methylisothiazolinone, also known as MI or MIT. MIT has been used in personal care products as an effective antifungal preservative for years.  However, as the article points out, concerns are […]

Concrete & the Challenge of Microbial Induced Corrosion

Of the more prominent challenges facing the construction industry are those related to  deterioration of material and structures by actions of microorganisms.  The process is  loosely known as Microbial Induced Corrosion (MIC), which belies an incredible range of processes occurring as a result of the growth of microorganism, principally bacteria, on our steel and concrete […]

Antimicrobial Preservatives and Additives – Aldehydes

Formaldehyde is the most basic form of aldehyde representing the class of reactive antimicrobials. Situ Biosciences – Microbial Test Experts Did you know? Formaldehyde and aldehydes can be volatile at room temperature leading to the odor commonly associated with preservation of tissue or tissue samples such as in laboratories, hospitals, and mortuaries. 

Assessment & Control of Microbial Contamination

 A Guide to Microbial Testing:  Microbial Control vs Microbial Elimination For Additional Guidance: First Steps to Microbial Product Testing In antimicrobial systems or microbiology testing, confusion arises when a particular system is being evaluated since the acceptable concentration of microorganisms for any particular process can differ. 

The Best Antimicrobial Additive

or “Which antimicrobial is best?” …unfortunately it’s not so simple. Product manufacturers have a challenging task when it comes to selecting antimicrobials for their products. Very few manufacturers have access to either in-house microbiology or formulation experts, or contract laboratories that have both microbial facilities and sufficient expertise in their product requirements… Details matter. For […]