Author Archive

Need help finding the correct ferrule to install your GC column? Part 5: Shimadzu GCs

You’re ready to install a column into your GC and realize you do not have the correct ferrules. Which ferrule do you choose?  The parameters to consider when choosing the correct ferrule are instrument make and model, nut size and type, ferrule material, and column ID.  A visit to our ferrules home page will provide […]

Need help finding the correct ferrule to install your GC column? Part 4: Thermo Scientific GCs

You’re ready to install a column into your GC and realize you do not have the correct ferrules. Which ferrule do you choose?  The parameters to consider when choosing the correct ferrule are instrument make and model, nut size and type, ferrule material, and column ID.  A visit to our ferrules home page will provide […]

Need help finding the correct ferrule to install your GC column? Part 3: Perkin Elmer GCs

Need help finding a ferrule to install your column? Part 3: Perkin Elmer GCs You’re ready to install a column into your GC and realize you do not have ferrules to do the job. Which ferrule do you choose?  The parameters to consider when choosing the correct ferrule are instrument make and model, nut size […]

Need help finding the correct Ferrule to install your GC Column? Part 2: Bruker/Varian GCs

You’re ready to install a column into your GC and realize you do not have ferrules to do the job. Which ferrule do you choose?  The parameters to consider when choosing the correct ferrule are instrument make and model, nut size and type, ferrule material, and column ID.  A visit to our ferrules home page […]

Need help finding the correct ferrule to install your GC column? Part 1: Agilent GC ferrules

You’re ready to install a column into your GC and realize you do not have ferrules to do the job. But which ferrule do you choose?  The parameters to consider when choosing the correct ferrule are instrument make and model, nut size and type, ferrule material, and column ID size. A visit to our ferrules […]

Certified Reference Material Explained

Restek offers Certified Reference Material (CRM) for a wide variety of analytical methods. But what makes a reference material certified and are there different certifications available? Let’s start with a brief overview of ISO accreditation. A company is first registered to standards such as ISO 9001:2008, which indicates they have an approved quality system in […]

Extending the expiration date on a reference standard

Restek occasionally receives requests from customers on extending the expiration date on their certified reference material or standards that we manufacture. The short answer to this question is no, Restek conducts real-time stability studies and accelerated stress tests to establish reliable expiration dates. Use beyond the identified expiration date is neither recommended nor guaranteed. While […]