Powder City's Mission

Powder City’s mission is to deliver the highest quality health and wellness products as a price leader in the market so that our customers can meet and achieve their performance goals.

Powder City focuses on customers’ wants and needs, and we strive for continuous improvement in this Mission by maintaining our core values: Quality First, People Matter, and Strive for Excellence.

Our Quality Control Practices

Receiving and Sampling

When we receive products, we place them in quarantine--a clearly marked area separated from the raw materials inventory. Powders in this area are only handled by the employees who gather samples for testing and cannot be sent out to customers until all testing procedures and documentation are complete.

Any given shipment can contain several barrels or containers of the same product. To be sure all the powder is up to our quality standards, samples are taken from every container. A composite sample is then blended from these samples and then sent to the lab.

Each sample goes through several tests. Different products undergo different analytical methods based on the product’s chemical composition. A product’s COA discloses which tests were performed. Certificates of Analysis (COA) are posted to the product page and provide a brief summary of the testing that was preformed.

A list of tests and a brief explanation of each are listed below:

Third Party Testing


High Performance Liquid Chromatography is the method by which products are tested for purity. This method is utilized when there is a single molecule or class of molecules that can be assayed for. A solution containing the dissolved sample is introduced into the instrument where the individual components are separated and then analyzed.

NMR- Structural Information

Nuclear Magnetic Resonance spectroscopy is the method by which products are characterized for correct composition. This method is employed for single-molecule products for which structural information is desired. NMR takes advantage of the fact that nuclei in different environments relax at different rates when exposed to a magnetic field and yields extensive information about the nature of the bonds in the analyte.

TLC- Identification

Thin-Layer Chromatography is the method by which products are identified non-quantitatively. This method is used for plant extracts made up of many different compounds. TLC is essentially rudimentary 2-dimensional flash chromatography, except the mobile phase travels up the plate via capillary action instead of down the column.

ICP-MS- Heavy Metal Testing

Inductively Coupled Plasma with Mass Spectrometry is the method by which products are tested for metal contamination. All products undergo this test, specifically for arsenic, cadmium, mercury, and lead. ICP-MS uses an abundance of ions and their mass-to-charge ratio to quantify the presence of analytes.

Microbiology Panel - Contaminant Testing

The microbiology panel involves ensuring products are below acceptable limits for common and dangerous biological species. All products that are extracts of biological entities undergo this panel. The tests included in the panel are the Total Aerobic Plate Count, Yeast; Mold Count, E. Coli presence, S. Aureus presence, and Salmonella presence.

Some products are difficult or impossible to test via the aforementioned methods. In these cases, alternative methods must be used. Some of these methods are:


Gravimetry is an alternative method by which products are assayed for purity. The object of gravimetric analysis is to manipulate the sample enough to the point where it can assayed by taking the mass of a solid.


Ultraviolet-Visible Spectroscopy is another alternative method by with products are assayed for purity. A beam of light is passed through a solution containing the analyte, and the transmitted wavelengths and intensities are used to calculate the composition of the sample.


Titration is a third method by which products are assayed for purity. A known reagent is mixed with a solution containing the analyte, and the physical change that follows is interpreted by the chemist.

Reviewing Third Party Test Results

After the third party test results are received, the documents are compared against the specifications for the product and deemed as pass or fail. Any product which fails to meet any specification is subject to further third party testing. The product will be rejected if one or more specifications fail the additional testing. If the product passes all specifications, then we begin the in-house testing process.

In-House tests

Melting Point Determination- Identification

The melting point of a substance is defined as the temperature range in which the substance undergoes a phase transition from solid to liquid. Any product for which a literature melting point value is established can be tested by examination of its melting point. Melting points are reported as a range; the first value is the temperature at which first melt is observed, and the second value is the temperature at which full melt is achieved.

Organoleptic Tests- Confirmation

The organoleptic panel is comprised of 3 pass/fail tests: visual inspection, olfactory testing, and gestational sampling. Every barrel of every lot is looked at, smelled, and tasted. Products that fail any one of these tests are designated for further testing.

Foreign materials inspection and final review

Powders are then sifted and inspected for foreign materials. Any powders found to contain foreign materials are returned to the quarantine area and are designated for further testing.

At this point, all testing results are reviewed one last time for completeness and accuracy before we release the product to manufacturing.

Product Release

A product must pass all applicable tests within the tolerances we set in order for the product to be utilized in production. After a product passes these tests, we generate a COA for the lot and move it from quarantine. A product cannot be moved from quarantine until a COA is generated.

Our Quality Control Policy


It is Powder City’s policy to assist every person in achieving their health and performance goals by consistently delivering the finest quality nootropics and supplements that not only meet but exceed our customers’ expectations.

Quality Mission Statement

Management will continuously review its efforts to exceed our customers’ expectations with an emphasis on making sure every aspect of the company exhibits the commitment to the Quality Policy.

This commitment will be maintained through:

  • Purchase of the highest quality ingredients from our suppliers
  • Appropriate testing of each product through reputable third party labs and in-house testing
  • Superior customer service
  • Continuous improvement of processes and procedures
  • Honesty and integrity in our marketing