Save on operation costs with VSi’s Parylene C Dimer
VSi Parylene C Dimer produces coatings in up to 39% less time. PFAS-free chemistry.
VSi Parylene C Dimer produces coatings in up to 39% less time. PFAS-free chemistry.
All VSi dimers are certified Biocompatible per USP Class VI
The unique molecular structure of parylene C achieves reliable barrier protection faster than other parylene variants. CAS 28804-46-8
VSi offers the best transparency on purity in the market.
Parylene C is a popular choice as one of the fastest depositing dimers on the market, but unreported parylene variants can significantly impact deposition rates. Using highly-reliable GCMS purity testing, VSi offers the best transparency on purity on the market.
Parylene C Purity Test | |||
PURITY TEST | HPLC PURITY |
GCMS PURITY |
Dep. Rate (µm/min) |
VSi Dimer | 99% | 97% | 0.070 |
Competitor Dimer | 99% | 85% | 0.043 |
The chart above compares the results of independent, third-party Gas Chromatography-Mass Spectrometry (GCMS) testing against self-reported High Pressure Liquid Chromatography (HPLC) testing of VSi dimer and one of the most popularly-selling dimer brands. |
Why is parylene C purity important?
The unique molecular structure of symmetrical dichloro paracyclophane allows it to deposit faster than other variants.
The unique chemistry of parylene C produces uniform and accelerated deposition behavior.
However, parylene variants often found in C dimer reduce the deposition rate benefits of parylene C by extending coating times.
Problematic in achieving true conformality of coating.
Mismatched monomers impact uniformity of coating thickness.
Lower “sticking coefficient” means slower deposition times.
Problematic in achieving true conformality of coating.
Mismatched monomers impact uniformity of coating thickness.
Lower “sticking coefficient” means slower deposition times.
Testing parylene for its true purity.
HPLC measures the proportion of parylene material vs. non-parylene material present in dimer to determine relative purity, but does not distinguish between parylene variants. As a result, parylene C dimer with high levels of speed-reducing parylene variants would still be considered ‘high-purity dimer’ by HPLC test methods.
GC-MS offers a greater level of detail than HPLC by measuring the proportion of individual parylene variants present in dimer to determine purity at the individual parylene variant level.
At VSi, purity is exclusively reported at the transparent GC-MS level to guarantee consistent and repeatable quality parylene C dimer.
VSi dimer provides the greatest transparency in dimer purity.
VSi Dimer will meet or exceed the coating quality of competitor dimers.
VSi Dimer works seemlessly with all parylene deposition systems.
VSI stands by the quality and performance of its dimer. If you’re not 100% satisfied, contact us within 60 days for support and/or a refund of the purchase price.