John Garner

PolySciTech certificates of analysis now available directly on the website

Blog Post created by John Garner on Jun 26, 2017

COA search online.PNG

All materials generated by the PolySciTech division of Akina, Inc. ( undergo a rigorous set of chemical characterization tests. These typically include Fourier-transform infrared spectrophotometry (FTIR) scan, proton nuclear magnetic resonance (HNMR), and gel-permeation chromatography (GPC). The FTIR test gives information on specific chemical moieties included in the material based on their particular absorption peaks/bands. The HNMR test provides further chemical characterization by providing peaks which correspond to specific shifts based on hydrogen local environment. This also allows for proton-counting to be used for determining polymer features. For example the lactide-to-glycolide ratio in PLGA can be determined by comparing the peak integration at 5.2 ppm (1H, lactide) with the integration at 4.8 (2H, glycolide). Gel-permeation chromatography yields data on the molecular weight of the polymer as well as the distribution of polymer chain lengths. The data from these tests are shown directly on the certificate of analysis (COA) to provide the customer with a thorough set of chemical characterization data.  Recently, Akina, Inc. has compiled the COAs for both currently available batches as well as historical batches of material into an online, searchable format. This allows for pulling up data both on historical batches purchased some time ago as well as reviewing COAs for current materials. Note that, as long as enough material is in stock to fill the order, you can request a specific batch on an order at no additional charge by indicating the batch on the order or in the ‘Special notes’ section on the online order form. See the searchable set of COAs here (