Archive for the ‘Maintenance’ Category

Troubleshooting GC Column Baseline Issues

Every GC analyst experiences baseline issues at some point in their career, whether the baseline is higher than normal, or it contains additional peaks/spikes, or becomes erratic and drifts up and down.  In order to fix the baseline issues you will need to determine the cause.   I hope that the information contained in this post, […]

Troubleshooting 101

Like most folks who work in the lab, you likely have had some downtime in the lab due to various reasons, like a column, instrument, sample prep, standards, and even application or method conditions. Troubleshooting then commences. Details are often needed, in order to get the bigger picture. One of the most important troubleshooting tools […]

The Foundation of Separation is Preparation

Restek is known as a leader in the field of chromatographic column technology.  The idea is built into our very identity – resolution technology is at the heart of Restek.  We also believe that proper sample preparation sets chromatography up for success, though, by reducing the incidence of confounding results and prolonging the lifetime of […]

Getting Your LC Up and Running Again

Welcome Back!  You and your lab have been through a lot these last few months and now it’s time to get your LC back up and running.  After it has been down for a few months, it likely needs a little TLC before it’s performing optimally again.  Just like a car that sits around for […]

How I clean a GC injection port

Recently I have been asked by several customers how to clean an injection port.  My initial answer is always the same, you should clean the injection port according to the manufacturer’s recommendations.  But what instructions do I provide when the injection port was manufactured by Restek?  I usually provide the same response but then I […]

Are PFAS sticking in your system?

Per- and polyfluoroalkyl substances (PFAS) are ubiquitous in our society and can be found in a wide range of consumer products; hence they are widely present in the environment, people and animals. They are persistent chemicals that have the potential to accumulate. Therefore, they are evaluated and monitored using a variety of methods and controlled […]

Purge and Trap weldment installation

Sometimes we get asked by customers for clarification when installing/connecting a new or replacement weldment from their purge & trap autosampler to their Agilent GC’s split/splitless injection port. As a result, I wrote this post to assist those that may be new to this type of installation or those that simply could use a quick […]

Not checking for leaks in your GC system has consequences

I know I am beginning to sound like a stuck record on this topic, but checking for leaks in your GC system on a daily basis, using an electronic leak detector, is a vital part of your routine maintenance program, and will prevent so many issues from turning into big headaches.  Furthermore, it doesn’t take […]

Shutting down your LC during a quarantine period?

It certainly does not only pertain to a quarantine period, but certainly more likely during the current Covid-19 crisis. Some of you might be needing to shut down your projects for a while. If you will not be using your LC column for more than 3 days, here are some recommendations and tips that might […]

Step-by-step instructions to easily, quickly and safely shut-down your GCs

In this current economy with stay-at-home recommendations/requirements due to the coronavirus, it has been unfortunate that many laboratories have been or will be forced to temporarily close their doors until the spread of the virus decreases enough that the stay-at-home orders are rescinded. If you find yourself in this distressing situation, sometimes it is difficult […]