Quiz #42 – Product Testing Solutions

We are taking a slight detour from our Chromatography related questions to offer a small peak into our Product Testing Solutions formulations. You can find background information for the quiz questions here:

Pickering Test Solutions

Perspiration Tests of Consumer Products (White paper)

Product Testing Solutions Brochure

Quiz #42 – Product Testing Solutions

Natural human perspiration has a complex composition that depends on the type of sweat gland, the person’s metabolism and hydration level. Pickering Laboratories’ human mimic artificial perspiration solutions are formulated based on published data for human sweat and provide the closest match to the “real thing” available on the market. These solutions are perfect for testing a variety of consumer products and medical devices as well as for forensics applications and as blanks for medical testing protocols.

  • There are two types of human perspiration; _____________ and _____________ perspiration.
  • ____________ perspiration is used for body temperature regulation.
  • Eccrine perspiration contains _______ acids, minerals, and metabolites.
  • Pickering Laboratories’ proprietary Artificial Eccrine Perspiration comes at pH_____.
  • Apocrine perspiration is secreted by apocrine glands and contains _______ acids and proteins.
  • Apocrine perspiration is initially odorless. Odor (volatile fatty acids) is produced once acted upon by _____________.
  • What is an oily substance that mixes with lipids to form a protective coating on the skins surface?
    1. Sebum
    2. Cerumen
    3. Perspiration
    4. All of the above
  • Currently, Pickering Laboratories offers the following product testing solutions:
    1. Perspiration
    2. Blood
    3. Saliva
    4. Lung Fluid
    5. All of the above
  • The pH of the solution is an important consideration in product testing, affecting corrosion rate, level of color degradation and leaching of metals and organic components from wearable products. Many procedures require a tight pH range during testing. To accommodate these pH requirements and to improve pH stability over time, Pickering Laboratories is offering _________ versions of industry-specific artificial perspiration formulations. By adding a Phosphate buffer to the original formulation, the pH stability of the solution is greatly improved while its effect on corrosion and colorfastness remains unaffected.
  • _____________ is one of the most important concerns in the textile industry. Discoloration of fabric can be due to perspiration, light, rubbing or a combination of all three. Salt, urea and lactic acid present in sweat can disrupt the bonding that dyes form with the fabric fibers, causing fading of the color. In addition, amino acids in sweat can attach to fabric to produce “protein stains”.
    1. Dissolution
    2. Staining
    3. Corrosion
    4. Colorfastness
  • Use of nanotechnology to endow new properties to textiles, such as antibacterial or UV protection, water repellency or flame retardancy, together with incorporating sensors and other digital components, creates the need to consider the effects of sweat on nanoparticles leaching and _____________ of integrated circuits as well.
    1. Corrosion
    2. Rusting
    3. Colorfastness
    4. Dissolution
  • A Certificate of Analysis (COA) and Safety Data Sheet (SDS) are available for all product testing solutions at no additional charge. True or False
  • Pickering’s product testing solutions and mimics are convenient, save you time, homogenous, reproducible, and customizable. True or False
  • Pickering offers customizable versions of our product testing formulations. True or False
  • Pickering Labs will be at booth 2138 at Pittcon 2023. True or False

Submit your answers to rsmith@pickeringlabs.com by April 28, 2023.

Announcing the winners of our previous quiz, Chromatography Quiz #41 – Amino Acids Baseline Noise

What is causing the baseline issues illustrated in the amino acids chromatograms?

Answer: Outgassing. There was no 100psi back-pressure regulator installed on the outlet of the detector flow cell. Because of this, there was not enough pressure to prevent boiling in the heated reactor (130C), which led to small bubbles showing up in the baseline.

Pickering Laboratories would like to congratulate the winners for our previous newsletter’s Chromatography Quiz #41:

Josiah Hakala from Minnesota Department of Health and Narjes Ghafoori from Los Angeles County Public Health Laboratory. 

They each will soon be receiving an Ember Travel Mug!  This smart device is “the world’s first temperature control mug” and does more than simply keep your coffee hot. According to Ember, “our smart heated travel mug allows you to set an exact drinking temperature and keeps it there for up to 3 hours, so your coffee is never too hot, or too cold.” 

Seems pretty cool to us!

Congratulations to our quiz winners!  Thank you all for your submissions!